CN109861732B - Antenna state adjusting method and device, storage medium and electronic equipment - Google Patents
Antenna state adjusting method and device, storage medium and electronic equipment Download PDFInfo
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- CN109861732B CN109861732B CN201811512116.8A CN201811512116A CN109861732B CN 109861732 B CN109861732 B CN 109861732B CN 201811512116 A CN201811512116 A CN 201811512116A CN 109861732 B CN109861732 B CN 109861732B
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Abstract
The embodiment of the application provides an antenna state adjusting method, an antenna state adjusting device, a storage medium and electronic equipment, wherein the antenna state adjusting method comprises the following steps: determining a transmitting antenna for transmitting a radio frequency signal currently by the electronic equipment; judging whether the standing-wave ratio of the transmitting antenna meets a first preset condition or not; if the standing-wave ratio of the transmitting antenna meets the first preset condition, judging whether the transmitting efficiency of the transmitting antenna meets a second preset condition; and if the transmitting efficiency of the transmitting antenna meets the second preset condition, adjusting the tuning state of the transmitting antenna. In the antenna state adjusting method, when the standing-wave ratio and the transmitting efficiency of the transmitting antenna both meet the set conditions, the electronic equipment adjusts the tuning state of the transmitting antenna, so that the performance of the transmitting antenna can be improved, and the communication stability of the electronic equipment is further improved.
Description
Technical Field
The present disclosure relates to the field of communications technologies, and in particular, to an antenna state adjustment method and apparatus, a storage medium, and an electronic device.
Background
With the development of network technology and the increase of the intelligence degree of electronic devices, users can implement more and more functions, such as voice call, video chat, playing network games, and the like, through electronic devices such as smart phones.
In the process of executing functions such as voice call, video chat and the like, the electronic device needs to perform data interaction with a base station or a server. In the data interaction process, the electronic device needs to transmit wireless signals through the antenna, wherein the electronic device needs to transmit radio frequency signals to the outside through the antenna and receive radio frequency signals from the outside through the antenna.
Due to the influence of the communication environment, when the antenna transmits radio frequency signals to the outside, the antenna may be interfered by other electronic devices, so that the performance of the antenna when the antenna transmits radio frequency signals to the outside is influenced, and the communication stability of the electronic device is further influenced.
Disclosure of Invention
The embodiment of the application provides an antenna state adjusting method, an antenna state adjusting device, a storage medium and electronic equipment, which can improve the communication stability of the electronic equipment.
The embodiment of the application provides an antenna state adjusting method, which comprises the following steps:
determining a transmitting antenna for transmitting a radio frequency signal currently by the electronic equipment;
judging whether the standing-wave ratio of the transmitting antenna meets a first preset condition or not;
if the standing-wave ratio of the transmitting antenna meets the first preset condition, judging whether the transmitting efficiency of the transmitting antenna meets a second preset condition;
and if the transmitting efficiency of the transmitting antenna meets the second preset condition, adjusting the tuning state of the transmitting antenna.
An embodiment of the present application further provides an antenna state adjustment apparatus, including:
the determining module is used for determining a transmitting antenna for the electronic equipment to transmit the radio frequency signal currently;
the first judgment module is used for judging whether the standing-wave ratio of the transmitting antenna meets a first preset condition or not;
the second judging module is used for judging whether the transmitting efficiency of the transmitting antenna meets a second preset condition or not if the standing-wave ratio of the transmitting antenna meets the first preset condition;
and the adjusting module is used for adjusting the tuning state of the transmitting antenna if the transmitting efficiency of the transmitting antenna meets the second preset condition.
An embodiment of the present application further provides a storage medium, where a computer program is stored in the storage medium, and when the computer program runs on a computer, the computer is enabled to execute the above antenna state adjustment method.
The embodiment of the present application further provides an electronic device, which includes a processor and a memory, where the memory stores a computer program, and the processor is configured to execute the antenna state adjustment method by calling the computer program stored in the memory.
The method for adjusting the antenna state provided by the embodiment of the application comprises the following steps: determining a transmitting antenna for transmitting a radio frequency signal currently by the electronic equipment; judging whether the standing-wave ratio of the transmitting antenna meets a first preset condition or not; if the standing-wave ratio of the transmitting antenna meets the first preset condition, judging whether the transmitting efficiency of the transmitting antenna meets a second preset condition; and if the transmitting efficiency of the transmitting antenna meets the second preset condition, adjusting the tuning state of the transmitting antenna. In the antenna state adjusting method, when the standing-wave ratio and the transmitting efficiency of the transmitting antenna both meet the set conditions, the electronic equipment adjusts the tuning state of the transmitting antenna, so that the performance of the transmitting antenna can be improved, and the communication stability of the electronic equipment is further improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used in the description of the embodiments will be briefly introduced below. It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
Fig. 1 is a schematic view of an application scenario of an antenna state adjustment method according to an embodiment of the present application.
Fig. 2 is a flowchart illustrating an antenna state adjustment method according to an embodiment of the present application.
Fig. 3 is another schematic flow chart of an antenna state adjustment method according to an embodiment of the present disclosure.
Fig. 4 is a schematic structural diagram of an antenna state adjustment apparatus according to an embodiment of the present application.
Fig. 5 is another schematic structural diagram of an antenna state adjustment apparatus according to an embodiment of the present application.
Fig. 6 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Fig. 7 is another schematic structural diagram of an electronic device according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without inventive step, are within the scope of the present application.
Referring to fig. 1, fig. 1 is a schematic view of an application scenario of an antenna state adjustment method according to an embodiment of the present application.
The antenna state adjusting method is applied to electronic equipment. The electronic equipment comprises a radio frequency transceiving module and a plurality of antennas, wherein each antenna is connected with the radio frequency transceiving module. For example, the electronic device may include an antenna 1, an antenna 2, an antenna 3, and an antenna 4, where the antenna 1, the antenna 2, the antenna 3, and the antenna 4 are all connected to the radio frequency transceiver module.
Each of the antennas may be configured to transmit radio frequency signals to the outside, for example, to a base station or other electronic devices. Each of the antennas may also be used to receive radio frequency signals from the outside world, for example, to receive radio frequency signals transmitted by a base station or other electronic devices. Thus, the plurality of antennas may form a MIMO (Multiple-Input Multiple-Output) antenna.
The radio frequency transceiving module is used for generating a radio frequency signal, outputting the generated radio frequency signal to the antenna, and then transmitting the radio frequency signal to the outside through the antenna. In addition, the radio frequency transceiver module is further configured to process a radio frequency signal received by the antenna.
The embodiment of the application provides an antenna state adjusting method. The antenna state adjusting method can be applied to electronic equipment. The electronic device can be a smart phone, a tablet computer and the like.
Referring to fig. 2, fig. 2 is a schematic flowchart of an antenna state adjustment method according to an embodiment of the present disclosure.
The antenna state adjusting method comprises the following steps:
110, a transmitting antenna for the electronic device to currently transmit the radio frequency signal is determined.
In the electronic device, one transmitting antenna for transmitting the radio frequency signal to the outside at the same time may be provided, and a plurality of receiving antennas for receiving the radio frequency signal from the outside may be provided. For example, the antenna 1 in the electronic device may be a transmitting antenna, and the antennas 1 and 2 may be receiving antennas at the same time.
In addition, among the plurality of antennas of the electronic device, a signal may be transmitted to the outside through an antenna having the highest transmission efficiency by default. That is, at this time, the antenna with the highest transmission efficiency in the electronic device may be determined as the transmitting antenna.
And 120, judging whether the standing-wave ratio of the transmitting antenna meets a first preset condition.
After the electronic device determines the current transmitting antenna, the standing-wave ratio of the transmitting antenna can be obtained. The standing wave ratio may also be referred to as a voltage standing wave ratio, a standing wave coefficient, or the like. The standing-wave ratio is a value greater than or equal to 1 and is used for representing the impedance matching degree between the antenna and the radio frequency transceiver module.
When the standing-wave ratio is 1, the radio frequency signals output to the antenna by the radio frequency transceiver module are all radiated to the outside, and no loss exists at the antenna. It is desirable that the standing wave ratio be 1. In practical applications, since a part of the rf signal output from the rf transceiver module to the antenna is inevitably lost at the antenna, the standing-wave ratio is greater than 1. The larger the standing wave ratio is, the more the radio frequency signal is lost at the antenna, and the less the radio frequency signal radiated to the outside by the antenna at the moment.
The first preset condition is a condition preset in the electronic device, and may be, for example, whether the magnitude of the standing-wave ratio satisfies the condition.
The electronic device may determine whether the standing-wave ratio of the transmitting antenna satisfies the first preset condition. If the standing-wave ratio of the transmitting antenna meets the first preset condition, the electronic device continues to execute step 130. If the standing-wave ratio of the transmitting antenna does not satisfy the first preset condition, the electronic device may switch the current transmitting antenna to set another antenna as the transmitting antenna, for example, switch the antenna 2 to the transmitting antenna, and then re-execute the procedure in this embodiment.
And 130, if the standing-wave ratio of the transmitting antenna meets the first preset condition, judging whether the transmitting efficiency of the transmitting antenna meets a second preset condition.
And if the electronic equipment judges that the standing-wave ratio of the current transmitting antenna meets the first preset condition, continuously judging whether the transmitting efficiency of the transmitting antenna meets a second preset condition.
The transmission efficiency of the antenna is a numerical value less than or equal to 1, and represents a ratio of power radiated to the outside by the antenna to power of a radio-frequency signal output to the antenna by the radio-frequency transceiver module.
When the transmission efficiency is 1, it means that all the power of the rf signal output from the rf transceiver module to the antenna is radiated to the outside through the antenna without any loss at the antenna. It should be noted that an emission efficiency of 1 is an ideal state. In practical applications, a radio frequency signal output from the radio frequency transceiver module to the antenna generates a part of reflected waves at the antenna, thereby consuming a part of power. Therefore, the emission efficiency is less than 1 in practical applications. The smaller the transmission efficiency, the more power is lost at the antenna, and the less power is radiated to the outside by the antenna.
The second preset condition is a condition preset in the electronic device, and may be, for example, whether the magnitude of emission efficiency satisfies the condition.
If the transmission efficiency of the transmitting antenna meets the second preset condition, the electronic device continues to execute step 140. If the transmission efficiency of the transmitting antenna does not satisfy the second preset condition, the electronic device may switch the current transmitting antenna to set another antenna as the transmitting antenna, for example, switch the antenna 2 to the transmitting antenna, and then re-execute the procedure in this embodiment.
140, if the transmission efficiency of the transmitting antenna meets the second preset condition, adjusting the tuning state of the transmitting antenna.
Wherein each antenna in the electronic device is connected with an impedance matching network. When a certain antenna is used as a transmitting antenna to transmit radio frequency signals to the outside, the antenna is tuned through an impedance matching network connected with the antenna. The impedance matching network may include tuning elements such as one or more capacitors, one or more inductors, one or more zero ohm resistors, and the like. The plurality of tuning elements may be connected in series or in parallel. The plurality of tuning elements may be connected to the transmit antenna through a switch.
If the electronic device determines that the transmission efficiency of the current transmitting antenna meets the second preset condition, the electronic device adjusts the tuning state of the transmitting antenna, for example, the transmitting antenna may be controlled to be switched to be connected with different tuning elements, so that the matching degree between the transmitting antenna and the communication frequency band of the current electronic device is higher, and the transmission performance of the transmitting antenna for transmitting radio frequency signals to the outside may be improved.
In some embodiments, referring to fig. 3, fig. 3 is another schematic flow chart of an antenna state adjustment method according to an embodiment of the present disclosure.
In step 110, before determining the transmitting antenna for the electronic device to transmit the radio frequency signal, the method further includes the following steps:
151, obtaining the received signal strength of the radio frequency signal received by the electronic device;
152, determining whether the received signal strength is less than a preset received signal strength threshold;
and if the received signal strength is smaller than the received signal strength threshold value, determining a transmitting antenna for transmitting the radio frequency signal currently by the electronic equipment.
The electronic device may obtain the received signal strength of the currently received radio frequency signal. The higher the received signal strength, the better the communication environment in which the electronic device is currently located. The lower the received signal strength, the worse the communication environment in which the electronic device is currently located.
A preset received signal strength threshold may be preset in the electronic device. The preset received signal strength threshold value represents a boundary between good and poor communication environments in which the electronic equipment is currently located. For example, the predetermined RSSI threshold may be-50 dBm (decibel-milliwatts).
The electronic device may compare the obtained received signal strength with the preset received signal strength threshold to determine whether the received signal strength is less than the preset received signal strength threshold.
If the received signal strength is smaller than the preset received signal strength threshold value, it is indicated that the communication environment where the electronic device is currently located is poor. At this time, the electronic device determines the transmitting antenna currently transmitting the radio frequency signal and performs subsequent processing.
If the received signal strength is not less than the preset received signal strength threshold, it is indicated that the communication environment where the electronic device is currently located is better. At this time, the electronic apparatus can maintain the current communication state without processing.
With continued reference to fig. 3, in some embodiments, the step 110 of determining a transmitting antenna currently transmitting radio frequency signals by the electronic device includes the steps of:
111, acquiring a current communication frequency range of the electronic equipment;
and 112, determining a transmitting antenna for the current radio frequency signal transmission of the electronic device according to the communication frequency band and a preset corresponding relationship, where the preset corresponding relationship includes a corresponding relationship between the communication frequency band and the transmitting antenna.
Since the shape and size of each antenna in the electronic device are fixed, the matching degree of the same antenna is different for different communication frequency bands. For example, the same antenna may be better matched to rf signals in a certain frequency band, but may be poorer matched to rf signals in another frequency band. Therefore, the transmission performance of the same antenna for radio frequency signals of different frequency bands is also different. When the electronic equipment transmits radio frequency signals to the outside, the radio frequency signals are transmitted to the outside through the antenna with the highest transmission efficiency by default.
The preset corresponding relation between the communication frequency band and the transmitting antenna can be pre-established in the electronic equipment. For example, a product developer may establish a preset correspondence between the communication frequency band and the transmitting antenna in the development process. When a certain communication frequency band corresponds to one transmitting antenna, the antenna has the highest transmission efficiency of radio frequency signals of the communication frequency band.
For example, the correspondence between the communication frequency bands and the transmitting antennas may be the correspondence shown in table 1:
TABLE 1
| Communication frequency band | Transmitting antenna |
| B1、B3 | Antenna 1 |
| B6、B8 | Antenna 3 |
| B7、B41 | Antenna 2 |
| …… | …… |
The electronic device can acquire a current communication frequency band, and determine a transmitting antenna for transmitting the radio frequency signal currently by the electronic device according to the communication frequency band and a preset corresponding relation.
For example, if the current communication frequency band of the electronic device is B1, it may be determined that the current transmitting antenna is antenna 1.
With continued reference to fig. 3, in some embodiments, the step 120 of determining whether the standing-wave ratio of the transmitting antenna satisfies a first preset condition includes the following steps:
121, obtaining the standing-wave ratio of the transmitting antenna;
122, calculating the absolute value of the difference value of the standing-wave ratio and a preset standing-wave ratio threshold value;
123, judging whether the absolute value is smaller than a preset threshold value;
124, if the absolute value is smaller than the preset threshold, determining that the standing-wave ratio of the transmitting antenna meets a first preset condition;
and 125, if the absolute value is not less than the preset threshold, determining that the standing-wave ratio of the transmitting antenna does not meet a first preset condition.
A bi-directional power detector may be integrated into a radio frequency transceiver module of the electronic device. The electronic device can detect the strength of the radio-frequency signal output to the antenna by the radio-frequency transceiver module and the strength of the reflected signal reflected back at the antenna through the bidirectional power detector, and then obtain the standing-wave ratio of the transmitting antenna according to the strength of the radio-frequency signal output to the antenna and the strength of the reflected signal.
A preset standing wave ratio threshold may be preset in the electronic device. The preset standing wave ratio threshold is a numerical value, for example, the preset standing wave ratio threshold may be 1.5.
After the electronic device obtains the standing-wave ratio of the transmitting antenna, the absolute value of the difference between the standing-wave ratio and the preset standing-wave ratio threshold can be calculated. Then, the absolute value is compared with a preset threshold value to judge whether the absolute value is smaller than the preset threshold value. The preset threshold may be a value preset in the electronic device. For example, the preset threshold may be 0.1.
If the absolute value is smaller than the preset threshold, it indicates that the standing-wave ratio of the transmitting antenna is close to the preset standing-wave ratio threshold, and it may be determined that the standing-wave ratio of the transmitting antenna satisfies a first preset condition.
If the absolute value is not smaller than the preset threshold, it indicates that the difference between the standing-wave ratio of the transmitting antenna and the preset standing-wave ratio threshold is large, and it may be determined that the standing-wave ratio of the transmitting antenna does not satisfy the first preset condition.
With continued reference to fig. 3, in some embodiments, the step 130 of determining whether the transmission efficiency of the transmitting antenna satisfies a second preset condition includes the following steps:
131, calculating an emission efficiency threshold according to a preset emission efficiency;
132, obtaining the transmission efficiency of the transmitting antenna;
133, determining whether the transmission efficiency is greater than or equal to the transmission efficiency threshold;
134, if the transmission efficiency is greater than or equal to the transmission efficiency threshold, determining that the transmission efficiency of the transmitting antenna meets a second preset condition;
and 135, if the transmission efficiency is smaller than the transmission efficiency threshold, determining that the transmission efficiency of the transmitting antenna does not satisfy a second preset condition.
In the electronic device, a preset transmission efficiency of each antenna for the radio frequency signal of each communication frequency band may be preset. The preset transmission efficiency may be transmission efficiency of the antenna under a condition without external interference. For example, a research and development staff may test each antenna in a research and development process to determine the transmission efficiency of each antenna for the radio frequency signal of each communication frequency band when there is no external interference, and set the transmission efficiency obtained through the test as the preset transmission efficiency of the antenna.
For example, the preset transmission efficiency of the antenna 1 for the radio frequency signal in the B1 frequency band may be set to be 25%, the preset transmission efficiency of the antenna 1 for the radio frequency signal in the B3 frequency band may be set to be 22%, and so on.
The electronic device may calculate the transmission efficiency threshold according to a preset transmission efficiency of the current transmitting antenna, for example, increase or decrease a certain value based on the preset transmission efficiency, so as to obtain the transmission efficiency threshold. The emission efficiency threshold is also a value, such as 20%.
The electronic equipment can monitor the transmitting efficiency of the transmitting antenna in real time, so that the transmitting efficiency of the current transmitting antenna can be acquired.
Subsequently, the electronic device compares the acquired emission efficiency with the emission efficiency threshold to determine whether the emission efficiency is greater than or equal to the emission efficiency threshold.
If the transmission efficiency is greater than or equal to the transmission efficiency threshold, it is determined that the transmission efficiency of the transmitting antenna meets a second preset condition.
If the transmission efficiency is smaller than the transmission efficiency threshold, the transmission efficiency of the transmitting antenna is lower, and at this time, the transmission efficiency of the transmitting antenna is determined not to meet a second preset condition.
In some embodiments, when calculating the transmission efficiency threshold according to the preset transmission efficiency, the calculation is performed according to the following formula:
M＝M1×(1-k)
wherein M is the emission efficiency threshold, M1K is a preset ratio for the preset emission efficiency.
For example, if the predetermined emission efficiency M1 is 25% and the predetermined ratio k is 20%, the emission efficiency threshold M can be calculated to be 20%.
With continued reference to fig. 3, in some embodiments, the adjusting 140 the tuning state of the transmitting antenna comprises:
141, adjusting an impedance value of an impedance matching network of the transmitting antenna.
The electronic device can adjust the impedance value of the impedance matching network of the transmitting antenna, so that the tuning state of the transmitting antenna can be adjusted. For example, the electronic device may switch a capacitance or an inductance accessed in the impedance matching network to adjust the impedance value of the impedance matching network.
In some embodiments, the impedance matching network comprises a variable capacitance. When the electronic device adjusts the impedance value of the impedance matching network of the transmitting antenna, the state or the capacitance value of the variable capacitor may be adjusted, for example, the capacitance value of the variable capacitor may be reduced, so as to adjust the impedance value of the impedance matching network.
In particular implementation, the present application is not limited by the execution sequence of the described steps, and some steps may be performed in other sequences or simultaneously without conflict.
As can be seen from the above, the method for adjusting an antenna state provided in the embodiment of the present application includes: determining a transmitting antenna for transmitting a radio frequency signal currently by the electronic equipment; judging whether the standing-wave ratio of the transmitting antenna meets a first preset condition or not; if the standing-wave ratio of the transmitting antenna meets the first preset condition, judging whether the transmitting efficiency of the transmitting antenna meets a second preset condition; and if the transmitting efficiency of the transmitting antenna meets the second preset condition, adjusting the tuning state of the transmitting antenna. In the antenna state adjusting method, when the standing-wave ratio and the transmitting efficiency of the transmitting antenna both meet the set conditions, the electronic equipment adjusts the tuning state of the transmitting antenna, so that the performance of the transmitting antenna can be improved, and the communication stability of the electronic equipment is further improved.
The embodiment of the application further provides an antenna state adjusting device, the antenna state adjusting device can be integrated in electronic equipment, and the electronic equipment can be equipment such as a smart phone and a tablet computer.
Referring to fig. 4, fig. 4 is a schematic structural diagram of an antenna state adjustment apparatus 200 according to an embodiment of the present disclosure.
Wherein the antenna state adjustment apparatus 200 includes: the device comprises a determining module 201, a first judging module 202, a second judging module 203 and an adjusting module 204.
The determining module 201 is configured to determine a transmitting antenna of the electronic device that currently transmits the radio frequency signal.
In the electronic device, one transmitting antenna for transmitting the radio frequency signal to the outside at the same time may be provided, and a plurality of receiving antennas for receiving the radio frequency signal from the outside may be provided. For example, the antenna 1 in the electronic device may be a transmitting antenna, and the antennas 1 and 2 may be receiving antennas at the same time.
In addition, among the plurality of antennas of the electronic device, a signal may be transmitted to the outside through an antenna having the highest transmission efficiency by default. That is, at this time, the determining module 201 may determine the antenna with the highest transmission efficiency in the electronic device as the transmitting antenna.
A first determining module 202, configured to determine whether a standing-wave ratio of the transmitting antenna meets a first preset condition.
After the determining module 201 determines the current transmitting antenna, the first determining module 202 may obtain the standing-wave ratio of the transmitting antenna. The standing wave ratio may also be referred to as a voltage standing wave ratio, a standing wave coefficient, or the like. The standing-wave ratio is a value greater than or equal to 1 and is used for representing the impedance matching degree between the antenna and the radio frequency transceiver module.
When the standing-wave ratio is 1, the radio frequency signals output to the antenna by the radio frequency transceiver module are all radiated to the outside, and no loss exists at the antenna. It is desirable that the standing wave ratio be 1. In practical applications, since a part of the rf signal output from the rf transceiver module to the antenna is inevitably lost at the antenna, the standing-wave ratio is greater than 1. The larger the standing wave ratio is, the more the radio frequency signal is lost at the antenna, and the less the radio frequency signal radiated to the outside by the antenna at the moment.
The first preset condition is a condition preset in the electronic device, and may be, for example, whether the magnitude of the standing-wave ratio satisfies the condition.
The first determining module 202 may determine whether the standing-wave ratio of the transmitting antenna satisfies the first preset condition. If the standing-wave ratio of the transmitting antenna meets the first preset condition, the second determining module 203 continues to process the signals. If the standing-wave ratio of the transmitting antenna does not satisfy the first preset condition, the electronic device may switch the current transmitting antenna to set another antenna as the transmitting antenna, for example, switch antenna 2 to the transmitting antenna.
A second determining module 203, configured to determine whether the transmitting efficiency of the transmitting antenna meets a second preset condition if the standing-wave ratio of the transmitting antenna meets the first preset condition.
If the first determining module 202 determines that the standing-wave ratio of the current transmitting antenna satisfies the first preset condition, the second determining module 203 continues to determine whether the transmitting efficiency of the transmitting antenna satisfies a second preset condition.
The transmission efficiency of the antenna is a numerical value less than or equal to 1, and represents a ratio of power radiated to the outside by the antenna to power of a radio-frequency signal output to the antenna by the radio-frequency transceiver module.
When the transmission efficiency is 1, it means that all the power of the rf signal output from the rf transceiver module to the antenna is radiated to the outside through the antenna without any loss at the antenna. It should be noted that an emission efficiency of 1 is an ideal state. In practical applications, a radio frequency signal output from the radio frequency transceiver module to the antenna generates a part of reflected waves at the antenna, thereby consuming a part of power. Therefore, the emission efficiency is less than 1 in practical applications. The smaller the transmission efficiency, the more power is lost at the antenna, and the less power is radiated to the outside by the antenna.
The second preset condition is a condition preset in the electronic device, and may be, for example, whether the magnitude of emission efficiency satisfies the condition.
If the transmission efficiency of the transmitting antenna meets the second preset condition, the adjustment module 204 continues processing. If the transmission efficiency of the transmitting antenna does not satisfy the second preset condition, the electronic device may switch the current transmitting antenna to set another antenna as the transmitting antenna, for example, switch the antenna 2 to the transmitting antenna.
An adjusting module 204, configured to adjust a tuning state of the transmitting antenna if the transmitting efficiency of the transmitting antenna meets the second preset condition.
Wherein each antenna in the electronic device is connected with an impedance matching network. When a certain antenna is used as a transmitting antenna to transmit radio frequency signals to the outside, the antenna is tuned through an impedance matching network connected with the antenna. The impedance matching network may include tuning elements such as one or more capacitors, one or more inductors, one or more zero ohm resistors, and the like. The plurality of tuning elements may be connected in series or in parallel. The plurality of tuning elements may be connected to the transmit antenna through a switch.
If the second determining module 203 determines that the transmission efficiency of the current transmitting antenna meets the second preset condition, the adjusting module 204 adjusts the tuning state of the transmitting antenna, for example, the transmitting antenna may be controlled to be switched to be connected with different tuning elements, so that the matching degree between the transmitting antenna and the communication frequency band of the current electronic device is higher, and the transmission performance of the transmitting antenna for transmitting radio frequency signals to the outside may be improved.
In some embodiments, referring to fig. 5, fig. 5 is a schematic structural diagram of an antenna state adjustment apparatus provided in the present application.
The antenna state adjustment apparatus 200 further includes a third determining module 205. The third determining module 205 is configured to perform the following steps:
acquiring the received signal strength of the electronic equipment for receiving the radio frequency signal;
judging whether the received signal strength is smaller than a preset received signal strength threshold value or not;
and if the received signal strength is smaller than the received signal strength threshold value, determining a transmitting antenna for transmitting the radio frequency signal currently by the electronic equipment.
The third determining module 205 can obtain the received signal strength of the radio frequency signal currently received by the electronic device. The higher the received signal strength, the better the communication environment in which the electronic device is currently located. The lower the received signal strength, the worse the communication environment in which the electronic device is currently located.
A preset received signal strength threshold may be preset in the electronic device. The preset received signal strength threshold value represents a boundary between good and poor communication environments in which the electronic equipment is currently located. For example, the predetermined RSSI threshold may be-50 dBm (decibel-milliwatts).
The third determining module 205 may compare the obtained received signal strength with the preset received signal strength threshold to determine whether the received signal strength is smaller than the preset received signal strength threshold.
If the received signal strength is smaller than the preset received signal strength threshold value, it is indicated that the communication environment where the electronic device is currently located is poor. At this time, the determining module 201 determines the transmitting antenna currently transmitting the rf signal, and performs subsequent processing.
If the received signal strength is not less than the preset received signal strength threshold, it is indicated that the communication environment where the electronic device is currently located is better. At this time, the electronic apparatus can maintain the current communication state without processing.
In some embodiments, the determination module 201 is configured to perform the following steps:
acquiring a current communication frequency band of the electronic equipment;
and determining a transmitting antenna for the current transmitting radio-frequency signal of the electronic equipment according to the communication frequency band and a preset corresponding relation, wherein the preset corresponding relation comprises the corresponding relation between the communication frequency band and the transmitting antenna.
Since the shape and size of each antenna in the electronic device are fixed, the matching degree of the same antenna is different for different communication frequency bands. For example, the same antenna may be better matched to rf signals in a certain frequency band, but may be poorer matched to rf signals in another frequency band. Therefore, the transmission performance of the same antenna for radio frequency signals of different frequency bands is also different. When the electronic equipment transmits radio frequency signals to the outside, the radio frequency signals are transmitted to the outside through the antenna with the highest transmission efficiency by default.
The preset corresponding relation between the communication frequency band and the transmitting antenna can be pre-established in the electronic equipment. For example, a product developer may establish a preset correspondence between the communication frequency band and the transmitting antenna in the development process. When a certain communication frequency band corresponds to one transmitting antenna, the antenna has the highest transmission efficiency of radio frequency signals of the communication frequency band.
For example, the correspondence between the communication frequency bands and the transmitting antennas may be the correspondence shown in table 2:
TABLE 2
| Communication frequency band | Transmitting antenna |
| B1、B3 | Antenna 1 |
| B6、B8 | Antenna 3 |
| B7、B41 | Antenna 2 |
| …… | …… |
The determining module 201 may obtain a current communication frequency band, and determine a transmitting antenna, which is currently used by the electronic device to transmit the radio frequency signal, according to the communication frequency band and a preset corresponding relationship.
For example, if the current communication frequency band of the electronic device is B1, the determining module 201 may determine that the current transmitting antenna is antenna 1.
In some embodiments, the first determining module 202 is configured to perform the following steps:
obtaining the standing-wave ratio of the transmitting antenna;
calculating the absolute value of the difference value of the standing-wave ratio and a preset standing-wave ratio threshold value;
judging whether the absolute value is smaller than a preset threshold value or not;
if the absolute value is smaller than the preset threshold, determining that the standing-wave ratio of the transmitting antenna meets a first preset condition;
and if the absolute value is not smaller than the preset threshold, determining that the standing-wave ratio of the transmitting antenna does not meet a first preset condition.
A bi-directional power detector may be integrated into a radio frequency transceiver module of the electronic device. The electronic device may detect the strength of the rf signal output to the antenna by the rf transceiver module and the strength of the reflected signal reflected by the antenna through the bidirectional power detector, and then the first determining module 202 obtains the standing-wave ratio of the transmitting antenna according to the strength of the rf signal output to the antenna and the strength of the reflected signal.
A preset standing wave ratio threshold may be preset in the electronic device. The preset standing wave ratio threshold is a numerical value, for example, the preset standing wave ratio threshold may be 1.5.
After the first determining module 202 obtains the standing-wave ratio of the transmitting antenna, an absolute value of a difference between the standing-wave ratio and a preset standing-wave ratio threshold may be calculated. Then, the absolute value is compared with a preset threshold value to judge whether the absolute value is smaller than the preset threshold value. The preset threshold may be a value preset in the electronic device. For example, the preset threshold may be 0.1.
If the absolute value is smaller than the preset threshold, it indicates that the standing-wave ratio of the transmitting antenna is close to the preset standing-wave ratio threshold, and it may be determined that the standing-wave ratio of the transmitting antenna satisfies a first preset condition.
If the absolute value is not smaller than the preset threshold, it indicates that the difference between the standing-wave ratio of the transmitting antenna and the preset standing-wave ratio threshold is large, and it may be determined that the standing-wave ratio of the transmitting antenna does not satisfy the first preset condition.
In some embodiments, the second determining module 203 is configured to perform the following steps:
calculating a transmission efficiency threshold value according to preset transmission efficiency;
acquiring the transmitting efficiency of the transmitting antenna;
judging whether the transmission efficiency is greater than or equal to the transmission efficiency threshold value;
if the transmission efficiency is greater than or equal to the transmission efficiency threshold, determining that the transmission efficiency of the transmitting antenna meets a second preset condition;
and if the transmission efficiency is smaller than the transmission efficiency threshold, determining that the transmission efficiency of the transmitting antenna does not meet a second preset condition.
In the electronic device, a preset transmission efficiency of each antenna for the radio frequency signal of each communication frequency band may be preset. The preset transmission efficiency may be transmission efficiency of the antenna under a condition without external interference. For example, a research and development staff may test each antenna in a research and development process to determine the transmission efficiency of each antenna for the radio frequency signal of each communication frequency band when there is no external interference, and set the transmission efficiency obtained through the test as the preset transmission efficiency of the antenna.
For example, the preset transmission efficiency of the antenna 1 for the radio frequency signal in the B1 frequency band may be set to be 25%, the preset transmission efficiency of the antenna 1 for the radio frequency signal in the B3 frequency band may be set to be 22%, and so on.
The second determining module 203 may calculate the transmission efficiency threshold according to the preset transmission efficiency of the current transmitting antenna, for example, increase or decrease a certain value on the basis of the preset transmission efficiency, so as to obtain the transmission efficiency threshold. The emission efficiency threshold is also a value, such as 20%.
The second determining module 203 may monitor the transmitting efficiency of the transmitting antenna in real time, so as to obtain the transmitting efficiency of the current transmitting antenna.
Subsequently, the second determining module 203 compares the obtained transmission efficiency with the transmission efficiency threshold to determine whether the transmission efficiency is greater than or equal to the transmission efficiency threshold.
If the transmission efficiency is greater than or equal to the transmission efficiency threshold, it is determined that the transmission efficiency of the transmitting antenna meets a second preset condition.
If the transmission efficiency is smaller than the transmission efficiency threshold, the transmission efficiency of the transmitting antenna is lower, and at this time, the transmission efficiency of the transmitting antenna is determined not to meet a second preset condition.
In some embodiments, when calculating the transmission efficiency threshold according to the preset transmission efficiency, the second determining module 203 calculates according to the following formula:
M＝M1×(1-k)
wherein M is the emission efficiency threshold, M1K is a preset ratio for the preset emission efficiency.
For example, if the predetermined emission efficiency M1 is 25% and the predetermined ratio k is 20%, the emission efficiency threshold M can be calculated to be 20%.
In some embodiments, the adjustment module 204 is configured to perform the following steps:
and adjusting the impedance value of the impedance matching network of the transmitting antenna.
The adjusting module 204 may adjust an impedance value of an impedance matching network of the transmitting antenna, so as to adjust a tuning state of the transmitting antenna. For example, the adjusting module 204 may switch a capacitor or an inductor connected in an impedance matching network of the transmitting antenna, so as to adjust an impedance value of the impedance matching network.
In some embodiments, the impedance matching network comprises a variable capacitance. When the adjusting module 204 adjusts the impedance value of the impedance matching network of the transmitting antenna, the state or the capacitance value of the variable capacitor may be adjusted, for example, the capacitance value of the variable capacitor may be reduced, so as to adjust the impedance value of the impedance matching network.
In specific implementation, the modules may be implemented as independent entities, or may be combined arbitrarily and implemented as one or several entities.
As can be seen from the above, the antenna state adjustment apparatus 200 according to the embodiment of the present application includes: a determining module 201, configured to determine a transmitting antenna of the electronic device that currently transmits a radio frequency signal; a first determining module 202, configured to determine whether a standing-wave ratio of the transmitting antenna meets a first preset condition; a second determining module 203, configured to determine whether the transmitting efficiency of the transmitting antenna meets a second preset condition if the standing-wave ratio of the transmitting antenna meets the first preset condition; an adjusting module 204, configured to adjust a tuning state of the transmitting antenna if the transmitting efficiency of the transmitting antenna meets the second preset condition. The antenna state adjusting device adjusts the tuning state of the transmitting antenna when the standing-wave ratio and the transmitting efficiency of the transmitting antenna meet set conditions, so that the performance of the transmitting antenna can be improved, and the communication stability of the electronic equipment is further improved.
The embodiment of the application also provides the electronic equipment. The electronic device can be a smart phone, a tablet computer and the like.
Referring to fig. 6, fig. 6 is a schematic structural diagram of an electronic device according to an embodiment of the present application. Electronic device 300 includes, among other things, a processor 301 and a memory 302. The processor 301 is electrically connected to the memory 302.
The processor 301 is a control center of the electronic device 300, connects various parts of the entire electronic device using various interfaces and lines, and performs various functions of the electronic device and processes data by running or calling a computer program stored in the memory 302 and calling data stored in the memory 302, thereby performing overall monitoring of the electronic device.
In this embodiment, the processor 301 in the electronic device 300 loads instructions corresponding to one or more processes of the computer program into the memory 302 according to the following steps, and the processor 301 runs the computer program stored in the memory 302, so as to implement various functions:
determining a transmitting antenna for transmitting a radio frequency signal currently by the electronic equipment;
judging whether the standing-wave ratio of the transmitting antenna meets a first preset condition or not;
if the standing-wave ratio of the transmitting antenna meets the first preset condition, judging whether the transmitting efficiency of the transmitting antenna meets a second preset condition;
and if the transmitting efficiency of the transmitting antenna meets the second preset condition, adjusting the tuning state of the transmitting antenna.
In some embodiments, when determining the transmitting antenna from which the electronic device is currently transmitting radio frequency signals, the processor 301 performs the following steps:
acquiring a current communication frequency band of the electronic equipment;
and determining a transmitting antenna for the current transmitting radio-frequency signal of the electronic equipment according to the communication frequency band and a preset corresponding relation, wherein the preset corresponding relation comprises the corresponding relation between the communication frequency band and the transmitting antenna.
In some embodiments, when determining whether the standing-wave ratio of the transmitting antenna satisfies a first preset condition, the processor 301 performs the following steps:
obtaining the standing-wave ratio of the transmitting antenna;
calculating the absolute value of the difference value of the standing-wave ratio and a preset standing-wave ratio threshold value;
judging whether the absolute value is smaller than a preset threshold value or not;
if the absolute value is smaller than the preset threshold, determining that the standing-wave ratio of the transmitting antenna meets a first preset condition;
and if the absolute value is not smaller than the preset threshold, determining that the standing-wave ratio of the transmitting antenna does not meet a first preset condition.
In some embodiments, when determining whether the transmission efficiency of the transmitting antenna satisfies a second preset condition, the processor 301 performs the following steps:
calculating a transmission efficiency threshold value according to preset transmission efficiency;
acquiring the transmitting efficiency of the transmitting antenna;
judging whether the transmission efficiency is greater than or equal to the transmission efficiency threshold value;
if the transmission efficiency is greater than or equal to the transmission efficiency threshold, determining that the transmission efficiency of the transmitting antenna meets a second preset condition;
and if the transmission efficiency is smaller than the transmission efficiency threshold, determining that the transmission efficiency of the transmitting antenna does not meet a second preset condition.
In some embodiments, when calculating the transmission efficiency threshold according to the preset transmission efficiency, the processor 301 performs calculation according to the following formula:
M＝M1×(1-k)
wherein M is the emission efficiency threshold, M1K is a preset ratio for the preset emission efficiency.
In some embodiments, when adjusting the tuning state of the transmit antenna, processor 301 performs the following steps:
and adjusting the impedance value of the impedance matching network of the transmitting antenna.
In some embodiments, the impedance matching network comprises a variable capacitor, and when adjusting the impedance value of the impedance matching network of the transmit antenna, the processor 301 performs the following steps:
adjusting a state or capacitance value of the variable capacitance.
In some embodiments, before determining the transmitting antenna from which the electronic device is currently transmitting radio frequency signals, the processor 301 further performs the following steps:
acquiring the received signal strength of the electronic equipment for receiving the radio frequency signal;
judging whether the received signal strength is smaller than a preset received signal strength threshold value or not;
and if the received signal strength is smaller than the received signal strength threshold value, determining a transmitting antenna for transmitting the radio frequency signal currently by the electronic equipment.
In some embodiments, referring to fig. 7, fig. 7 is a schematic structural diagram of an electronic device provided in an embodiment of the present application.
Wherein, the electronic device 300 further comprises: radio frequency circuit 303, display screen 304, control circuit 305, input unit 306, sensor 307, and power supply 308. The processor 301 is electrically connected to the rf circuit 303, the display screen 304, the control circuit 305, the input unit 306, the sensor 307, and the power source 308.
The radio frequency circuit 303 is used to transmit and receive radio frequency signals to communicate with a network device or other electronic devices through wireless communication.
The display screen 304 may be used to display information entered by or provided to the user as well as various graphical user interfaces of the electronic device, which may be comprised of images, text, icons, video, and any combination thereof.
The control circuit 305 is electrically connected to the display screen 304, and is used for controlling the display screen 304 to display information.
The input unit 306 may be used to receive input numbers, character information, or user characteristic information (e.g., fingerprint), and to generate keyboard, mouse, joystick, optical, or trackball signal inputs related to user settings and function control. The input unit 306 may include a fingerprint recognition module.
The sensor 307 is used to collect external environmental information. The sensor 307 may include one or more of an ambient light sensor, an acceleration sensor, a gyroscope, and the like.
The power supply 308 is used to power the various components of the electronic device 300. In some embodiments, the power supply 308 may be logically coupled to the processor 301 through a power management system, such that functions to manage charging, discharging, and power consumption management are performed through the power management system.
Although not shown in fig. 7, the electronic device 300 may further include a camera, a bluetooth module, an image processing circuit, an audio processing circuit, and the like, which are not described in detail herein.
As can be seen from the above, an embodiment of the present application provides an electronic device, where the electronic device performs the following steps: determining a transmitting antenna for transmitting a radio frequency signal currently by the electronic equipment; judging whether the standing-wave ratio of the transmitting antenna meets a first preset condition or not; if the standing-wave ratio of the transmitting antenna meets the first preset condition, judging whether the transmitting efficiency of the transmitting antenna meets a second preset condition; and if the transmitting efficiency of the transmitting antenna meets the second preset condition, adjusting the tuning state of the transmitting antenna. When the standing-wave ratio and the transmitting efficiency of the transmitting antenna meet set conditions, the electronic equipment adjusts the tuning state of the transmitting antenna, so that the performance of the transmitting antenna can be improved, and the communication stability of the electronic equipment is further improved.
An embodiment of the present application further provides a storage medium, where a computer program is stored in the storage medium, and when the computer program runs on a computer, the computer executes the antenna state adjustment method according to any one of the above embodiments.
It should be noted that, all or part of the steps in the methods of the above embodiments may be implemented by hardware related to instructions of a computer program, which may be stored in a computer-readable storage medium, which may include, but is not limited to: read Only Memory (ROM), Random Access Memory (RAM), magnetic or optical disks, and the like.
In the description of the present application, it is to be understood that terms such as "first", "second", and the like are used merely to distinguish one similar element from another, and are not to be construed as indicating or implying relative importance or implying any indication of the number of technical features indicated.
The antenna state adjustment method, the antenna state adjustment device, the storage medium, and the electronic device provided in the embodiments of the present application are described in detail above. The principle and the implementation of the present application are explained herein by applying specific examples, and the above description of the embodiments is only used to help understand the method and the core idea of the present application; meanwhile, for those skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (10)
1. An antenna state adjustment method, comprising:
determining a transmitting antenna for transmitting a radio frequency signal currently by the electronic equipment;
obtaining the standing-wave ratio of the transmitting antenna;
calculating the absolute value of the difference value of the standing-wave ratio and a preset standing-wave ratio threshold value;
judging whether the absolute value is smaller than a preset threshold value or not;
if the absolute value is smaller than the preset threshold, judging whether the transmitting efficiency of the transmitting antenna meets a second preset condition;
and if the transmitting efficiency of the transmitting antenna meets the second preset condition, adjusting the tuning state of the transmitting antenna.
2. The method of claim 1, wherein the step of determining a transmitting antenna currently transmitting the radio frequency signal comprises:
acquiring a current communication frequency band of the electronic equipment;
and determining a transmitting antenna for the current transmitting radio-frequency signal of the electronic equipment according to the communication frequency band and a preset corresponding relation, wherein the preset corresponding relation comprises the corresponding relation between the communication frequency band and the transmitting antenna.
3. The method of claim 1, wherein the step of determining whether the transmission efficiency of the transmitting antenna satisfies a second predetermined condition comprises:
calculating a transmission efficiency threshold value according to preset transmission efficiency;
acquiring the transmitting efficiency of the transmitting antenna;
judging whether the transmission efficiency is greater than or equal to the transmission efficiency threshold value;
if the transmission efficiency is greater than or equal to the transmission efficiency threshold, determining that the transmission efficiency of the transmitting antenna meets a second preset condition;
and if the transmission efficiency is smaller than the transmission efficiency threshold, determining that the transmission efficiency of the transmitting antenna does not meet a second preset condition.
4. The method of claim 3, wherein when the transmission efficiency threshold is calculated according to the preset transmission efficiency, the method is calculated according to the following formula:
M＝M1×(1-k)
wherein M is the emission efficiency threshold, M1K is a preset ratio for the preset emission efficiency.
5. The method of claim 1, wherein the step of adjusting the tuning state of the transmitting antenna comprises:
and adjusting the impedance value of the impedance matching network of the transmitting antenna.
6. The method of claim 5, wherein the impedance matching network comprises a variable capacitor, and wherein the step of adjusting the impedance value of the impedance matching network of the transmitting antenna comprises:
adjusting a state or capacitance value of the variable capacitance.
7. The method for adjusting antenna status according to claim 1, wherein before the step of determining the transmitting antenna currently transmitting the radio frequency signal, the method further comprises:
acquiring the received signal strength of the electronic equipment for receiving the radio frequency signal;
judging whether the received signal strength is smaller than a preset received signal strength threshold value or not;
and if the received signal strength is smaller than the received signal strength threshold value, determining a transmitting antenna for transmitting the radio frequency signal currently by the electronic equipment.
8. An antenna state adjustment device, comprising:
the determining module is used for determining a transmitting antenna for the electronic equipment to transmit the radio frequency signal currently;
a first determining module, configured to: obtaining the standing-wave ratio of the transmitting antenna, calculating the absolute value of the difference value between the standing-wave ratio and a preset standing-wave ratio threshold value, and judging whether the absolute value is smaller than the preset threshold value or not;
a second judging module, configured to judge whether the transmission efficiency of the transmitting antenna meets a second preset condition if the absolute value is smaller than the preset threshold;
and the adjusting module is used for adjusting the tuning state of the transmitting antenna if the transmitting efficiency of the transmitting antenna meets the second preset condition.
9. A storage medium having stored therein a computer program which, when run on a computer, causes the computer to execute the antenna-state adjustment method according to any one of claims 1 to 7.
10. An electronic device, characterized in that the electronic device comprises a processor and a memory, wherein the memory stores a computer program, and the processor is used for executing the antenna state adjustment method according to any one of claims 1 to 7 by calling the computer program stored in the memory.
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| CN110312270B (en) * | 2019-06-17 | 2022-10-14 | Oppo广东移动通信有限公司 | Communication quality improving method, low-power-consumption wide area network device and storage medium |
| CN110290577B (en) * | 2019-07-15 | 2022-06-07 | Oppo（重庆）智能科技有限公司 | Power compensation method, antenna assembly and electronic equipment |
| CN112235014B (en) * | 2020-10-13 | 2022-05-17 | Oppo广东移动通信有限公司 | Adjustment method, device, electronic device and storage medium of radio frequency circuit |
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