CN109755748B - Electronic device - Google Patents
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- CN109755748B CN109755748B CN201910052206.1A CN201910052206A CN109755748B CN 109755748 B CN109755748 B CN 109755748B CN 201910052206 A CN201910052206 A CN 201910052206A CN 109755748 B CN109755748 B CN 109755748B
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Abstract
The embodiment of the invention discloses electronic equipment. The electronic device includes: a radio frequency integrated circuit; the radio frequency integrated circuit comprises a plurality of radio frequency channels, a plurality of radio frequency integrated circuits and a plurality of radio frequency channels, wherein each radio frequency channel is connected with the radio frequency integrated circuit; a plurality of drainage pathways; the switching device is positioned between the multi-path radio frequency channel and the plurality of drainage channels and is used for selecting the radio frequency channel connected with the drainage channels; the antenna is connected with the plurality of drainage channels, and is used for supporting the transceiving of wireless signals of at least two frequency bands.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to an electronic device.
Background
With the development of communication technology, many communication devices have multiple antennas, and these antennas can transmit and receive wireless signals of different frequency bands. In the prior art, due to the design of multiple antennas, these antennas all need to be resonant by impedance matching. However, different frequencies will introduce inductance and/or capacitance required for respective resonances, and the introduction of inductance or capacitance for one antenna supporting two or more frequencies will also result in the need to introduce more matching elements for other antennas, which results in a large size of the whole antenna module, is not suitable for the thinning of communication equipment, or flexible structure design, and will also aggravate signal attenuation in one or more frequency bands to some extent.
Disclosure of Invention
In view of the above, embodiments of the present invention are directed to an electronic device.
The technical scheme of the invention is realized as follows: an electronic device, the electronic device comprising:
a radio frequency integrated circuit;
the radio frequency integrated circuit comprises a plurality of radio frequency channels, a plurality of radio frequency integrated circuits and a plurality of radio frequency channels, wherein each radio frequency channel is connected with the radio frequency integrated circuit;
a plurality of drainage pathways;
the switching device is positioned between the multi-path radio frequency channel and the plurality of drainage channels and is used for selecting the radio frequency channel connected with the drainage channels;
the antenna is connected with the plurality of drainage channels, and is used for supporting the transceiving of wireless signals of at least two frequency bands.
Based on the above scheme, the drainage channel includes:
and the current guide path has a first impedance when transmitting an electric signal of a preset frequency band, wherein the first impedance is matched with the characteristic impedance of the radio frequency channel for transmitting the preset frequency band.
Based on the above scheme, the drainage channel includes:
a current guiding path having a second impedance when transmitting an electric signal of a predetermined frequency band;
and the matching network has a third impedance when transmitting the electric signal of the preset frequency band, wherein the sum of the second impedance and the second impedance is matched with the characteristic impedance of the radio frequency path for transmitting the preset frequency band.
Based on the scheme, the matching networks of different drainage channels do not influence each other.
Based on the above scheme, the electronic device further includes:
a circuit board; wherein the current guiding path is located on the circuit board;
or,
the drainage path is located on the antenna.
Based on the scheme, the specification parameters of the drainage path comprise at least one of the following parameters:
a path shape;
a path length;
a path width;
a path thickness;
wherein the different drainage paths have different path shapes, different path lengths of the drainage paths, and/or different path widths of the drainage paths; and/or the path thickness of different ones of the drainage paths is different.
Based on the scheme, one drainage channel is used for electric signal transmission of the wireless signals of one frequency band.
Based on the scheme, the characteristic impedance is determined according to the impedance of the radio frequency channel for processing the electric signals of the corresponding frequency band.
Based on the scheme, the specification parameters of the drainage channel are determined according to the characteristic impedance of the corresponding frequency band.
Based on the above-mentioned scheme, the method,
different drainage channels do not influence each other.
According to the electronic equipment provided by the embodiment of the invention, a plurality of drainage paths are introduced between the antenna and the radio frequency channel, and the plurality of drainage paths can transmit electric signals formed by converting wireless signals of different frequency bands to the corresponding radio frequency channel, so that drainage of the electric signals of different frequency bands is realized, and on one hand, the problems of more electronic elements and large volume for realizing impedance matching of at least two frequency bands for one antenna caused by sharing one transmission path or matching network by different frequency bands are reduced, the structural design flexibility of the electronic equipment is improved, and further integration of the electronic equipment is facilitated; on the other hand, the drainage channels correspond to different frequency bands, and mutual interference among signals of different frequency bands is reduced as much as possible, so that signal attenuation is reduced, and signal quality is improved.
Drawings
Fig. 1 is a schematic structural diagram of a first electronic device according to an embodiment of the present invention;
fig. 2A is a schematic structural diagram of a second electronic device according to an embodiment of the invention;
fig. 2B is a schematic structural diagram of a third electronic device according to an embodiment of the invention;
fig. 2C is a schematic structural diagram of a fourth electronic device according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a fifth electronic device according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of the electronic device shown in FIG. 3;
FIG. 5A is a schematic diagram of a VSWR curve when a first length of the current-guiding path is connected to capacitors with different capacitance values;
FIG. 5B is a schematic diagram of a VSWR curve when a second length of the current-guiding path is connected to capacitors of different capacitance values;
FIG. 5C is a schematic diagram of a VSWR curve when a third length of the current-guiding path is connected to capacitors with different capacitance values.
Detailed Description
The technical solution of the present invention is further described in detail with reference to the drawings and the specific embodiments of the specification.
As shown in fig. 1, the present embodiment provides an electronic device, including:
a radio frequency integrated circuit;
the radio frequency integrated circuit comprises a plurality of radio frequency channels, a plurality of radio frequency integrated circuits and a plurality of radio frequency channels, wherein each radio frequency channel is connected with the radio frequency integrated circuit;
a plurality of drainage pathways;
the switching device is positioned between the multi-path radio frequency channel and the plurality of drainage channels and is used for selecting the radio frequency channel connected with the drainage channels;
the antenna is connected with the plurality of drainage channels, and is used for supporting the transceiving of wireless signals of at least two frequency bands.
The electronic device provided by this embodiment may be any electronic device, for example, a communication device such as a mobile phone, a tablet computer, or a wearable device.
The radio frequency integrated circuit may be an integrated circuit that processes radio frequency signals, which may be commonly referred to as an RFIC for short.
The rf path may be a device that performs processing of electrical signals, for example, the device may include: a power amplifier for power amplification and a filter for filtering. In this embodiment, the plurality of radio frequency paths may be respectively configured to transmit electrical signals corresponding to wireless signals of different frequency bands, for example, the frequency band of the wireless signal may be at least one of the following: 700Mhz, 800Mhz, 1700Mhz, 2200Mhz, 2400Mhz, etc.
The drainage path comprises at least one metal wire or layer of metal whose specification parameters depend on the dimensions of the wire or layer, such as length, width and/or thickness.
The drainage channel can be a plurality of channels, 2 channels are shown in fig. 2, and the specific implementation is not limited to 2 channels.
The drainage channel is independent of an antenna used for wireless signal radiation and reception, and belongs to a transmission path used for electric signal transmission after the antenna receives a wireless signal and converts the wireless signal into an electric signal, and a transmission path of the electric signal corresponding to the wireless signal radiated by the antenna. In summary, the drainage path is completely independent of the antenna and is not attached to an independent part of the antenna.
In the electronic device provided by the embodiment, the drainage channel is introduced and is used for guiding the radio frequency channel through which the radio signal received by the antenna is converted into the electric signal, and finally realizing the conduction of the electric signal between the radio transceiver and the antenna.
Because a plurality of different drainage channels exist, electric signals converted from wireless signals of different frequency bands have different frequencies, and the electric signals converted from the wireless signals can automatically select the corresponding drainage channels to conduct on the basis of the non-interfering impedance matching function; therefore, on one hand, the electric signals corresponding to the wireless signals of different frequency bands are conducted by utilizing different drainage channels, so that the phenomenon that when the electric signals of different frequency bands share one matching network, because the matching network needs to take account of the phenomena of more matching network elements and/or large elements caused by impedance matching of the electric signals of different frequency bands, the size of the electronic equipment is reduced, and the integration of the electronic equipment and the structural design of the electronic equipment are facilitated. On the other hand, because different drainage paths respectively process the electric signals of different frequency bands, the problems that the impedance mismatch of signals of some frequency bands or the impedance matching effect is poor and the like caused by the fact that multiple paths of electric signals share the same path are solved.
In some embodiments, the antenna is specifically configured to, after converting wireless signals of different frequency bands into electrical signals of different frequencies, automatically select a drainage channel matched with a corresponding frequency to conduct to the multiple radio frequency channels.
The switching device may include: one or more devices with switching functionality, which may also be referred to as radio frequency switches. For example, the switching device may be: a single pole throw switch; the single pole throw switch includes a contact; one end of the contact rod is statically connected to the fixed contact, and the other end of the contact rod can be switched among different movable contacts. Different radio frequency channels can be connected with different movable contacts, so that the single-pole throw switch is connected with different radio frequency channels when the contact rods are arranged on different movable contacts, and the single-pole throw switch can realize the connection between the drainage channel and different radio frequency channels by adjusting the position of the contact rod per se. In other embodiments, the switching device may further include: and the multiplexer can selectively conduct the radio frequency channels connected with the plurality of drainage channels through the self selection state.
If the wireless signal received and transmitted by the current antenna is a signal of a first frequency band, the switch device selects to conduct the drainage path and the radio frequency path for processing the electric signal converted from the wireless signal of the first frequency band, so as to realize the receiving and transmitting of the wireless signal of the first frequency band. And if the wireless signal received and transmitted by the current antenna is a signal of a second frequency band, the switch device selects a radio frequency channel which is switched on and processes the electrical limit signal converted from the wireless signal of the second frequency band so as to realize the receiving and transmitting of the wireless signal of the second frequency band.
The antenna may be various antennas capable of radiating and receiving a specific frequency band, for example, the antenna includes a radiator, which may be various forms of radiation structures. The antenna has various shapes, and the antenna may include a loop antenna formed in a loop shape; the loop antenna may further include: a circular ring antenna, a triangular antenna, a prismatic antenna, or a rectangular antenna.
The antenna may also include other non-loop antennas such as an inverted-F antenna or a T-shaped antenna.
The antenna may be an omni-directional antenna or a directional antenna according to the type of the antenna.
In this embodiment, the antennas may be mobile antennas such as 2G, 3G, 4G, or 5G antennas according to frequency band differentiation of wireless signals received and transmitted by the antennas; alternatively, the antenna may also be: a bluetooth antenna for processing bluetooth signals or a WiFi antenna for processing WiFi signals, etc.
In some embodiments, the drainage pathway comprises:
and the current guide path has a first impedance when transmitting an electric signal of a preset frequency band, wherein the first impedance is matched with the characteristic impedance of the radio frequency channel for transmitting the preset frequency band.
In this embodiment, the current-guiding path itself has a first impedance, and the first impedance can be matched with a characteristic impedance of a radio frequency path transmitting a predetermined frequency band to implement impedance matching, so that loss of signal transmission is reduced as much as possible by impedance matching, and quality of signal transmission is ensured.
Fig. 2A shows an electronic apparatus in the related art; fig. 2B shows the electronic device provided in this embodiment. In fig. 2A, the antenna is directly connected to the matching network, and then sequentially connected to the switching device, the multiple rf paths, and the rf ic through the matching network. In fig. 2B, the antenna is connected to the switching device through the current-guiding path a and the current-guiding path B, and then sequentially connected to the multiple rf paths and the rf ic. Here, the drainage pathway includes only the drainage path; the drainage path a and the drainage path B are used for impedance matching separately.
In the electronic device of the present embodiment, a flow guiding path is introduced, which is interposed between an antenna for wireless signal radiation and reception and a matching network, is not affiliated with either the antenna or the matching network, and is a structure independent of the antenna and the matching network.
In other embodiments, the drainage pathway comprises:
a current guiding path having a second impedance when transmitting an electric signal of a predetermined frequency band;
and the matching network has a third impedance when transmitting the electric signal of the preset frequency band, wherein the sum of the second impedance and the second impedance is matched with the characteristic impedance of the radio frequency path for transmitting the preset frequency band.
The current conduction path is a conduction path for an electrical signal, and is typically composed of a metal line or a metal layer on the carrier, for example, a metal layer disposed on a printed circuit.
The matching network includes one or more electronic components including, but not limited to, inductors and/or capacitors.
Fig. 2C shows the electronic device provided in this embodiment. In fig. 2C the drainage path comprises two parts, a drainage path and a matching network. For example, the drainage pathway a includes: a drainage path A and a matching network A; the drainage pathway B includes: a drainage path B and a matching network B.
In the electronic device of the embodiment, a drainage path is introduced, the drainage path is arranged between an antenna for wireless signal radiation and reception and a matching network, is not affiliated to the antenna or the matching network, and is a structure independent of the antenna and the matching network; the current-guiding path and the matching network together serve to match a characteristic impedance.
In some embodiments, the second impedance is close to the characteristic impedance, and after the third impedance of the matching network is used for impedance fine-tuning based on the second impedance, the sum of the impedances of the second impedance and the third impedance and the characteristic impedance can meet the matching condition, so that impedance matching is realized.
For example, if the characteristic impedance is 50 ohms, the sum of the second impedance and the third impedance is equal to 50 ohms, or if the characteristic impedance is matched, the sum of the second impedance and the third impedance is close to 50 ohms.
In this embodiment, the matching network may include a capacitor. The capacitor is connected with the current guiding path. If the frequency band of the drainage channel for transmitting signals is less than 2.2G or 2.4G; then, at this time, the capacitance value range of the capacitor includes: 1PF to 100 PF.
In some embodiments, the length of the drainage path ranges between 10 and 20 mm; for example, the lengths of the matching paths include: 14mm, 18mm and/or 20 mm.
In some embodiments, the matching networks of different said drainage paths do not interact with each other.
In this embodiment, the mutually noninterfering matching networks of different drainage paths include at least one of:
the matching networks of the different drainage paths are completely independent of each other, e.g., the matching network a of the drainage path a and the matching network B of the drainage path B do not share any electronic components (e.g., resistors, capacitors, and/or inductors);
electronic elements which can generate mutual interference or influence are not shared by shared parts of electronic elements of matching networks of different drainage channels; for example, resistors in the matching network may be shared, but capacitors, etc. are not shared.
In a word, in this embodiment, the matching networks of different drainage paths do not influence each other, so that the problem of large signal attenuation caused by poor subsequent impedance matching effect due to mutual influence is reduced.
In some embodiments, the electronic device further comprises:
a circuit board; wherein the current guiding path is located on the circuit board;
or,
the drainage path is located on the antenna.
In this embodiment, the circuit board and the antenna may both serve as a carrier for arranging the current guiding path, and provide a bearing surface for laying the current guiding path.
The circuit board may be various types of Printed Circuit Boards (PCBs); the PCB may be a main board in the electronic device or other circuit boards besides the main board. The drainage path may be a transmission path disposed inside the PCB; the drainage path may be tiled on the PCB. For example, the current drainage path may be formed using copper wires within a PCB board. In some embodiments, the drainage path may further include a transmission path on the surface of the PCB, and an insulation layer may be formed on an outer side of the transmission path, and the insulation layer may be a plating layer or an insulation paint layer.
In some embodiments, the drainage path may be a transmission path carried by an antenna; specifically, the current guiding path may be a conductor layer located on a radiator of the antenna; the conductor layer may be a conductor layer that is laid flat on the radiator; at this time, an insulating layer is disposed between the current guiding path and the radiator, and the insulating layer may be an insulating paint or an insulating plating layer having a very thin thickness, or the like. When the current guiding path is provided on the radiator, it does not participate in radiation or reception of a radiated wireless signal, but is used for impedance matching.
In some embodiments, the specification parameters of the drainage path include at least one of:
a path shape;
a path length;
a path width;
a path thickness;
wherein the path shape of different drainage paths is different; and/or the path length of different said drainage paths is different, and/or the path width of different said drainage paths is different; and/or the path thickness of different ones of the drainage paths is different.
If the path shapes are different, at least one of the path lengths and/or widths may be different, so that the drainage paths with different path shapes have different impedances corresponding to the same frequency band, and thus only one drainage path meeting the impedance matching condition exists in the plurality of drainage paths.
The path length may be: a length between a start end and a termination end of the signal transmission path; the width of the channel can be the length of the cross section of the transmission path of the signal in the first direction; the thickness of the passage may be the length of the cross-section in a second direction, the first direction being perpendicular to the second direction.
The path length, path width, and path thickness can all be parameters that affect the impedance of the drainage path.
As shown in fig. 2B and 2C, the drainage pathway a and the drainage pathway are different in shape and length.
The drainage pathway 1 and the drainage pathway 2 shown in fig. 4; by comparison, the drainage paths 1 and 2 are different in shape, width and length. The drainage path 1 is L-shaped, and the drainage path is linear.
In this embodiment, a plurality of drainage channels are provided, and at least one of the specification parameters of different drainage channels is different in order to realize that different drainage channels are used for impedance matching of different frequency bands.
In some embodiments, one of the drainage paths is used for electrical signal transmission of the wireless signal of one frequency band.
In order to reduce the mutual interference of signal transmission in different frequency bands as much as possible, in the present embodiment, one drainage path is only used for signal drainage in one frequency band.
In some embodiments, the characteristic impedance is determined from an impedance of a radio frequency channel processing the electrical signal of the corresponding frequency band.
The characteristic impedance is impedance according to a power amplifier device, a filter device, a transmission path and the like on a radio frequency channel.
In some embodiments, the specification parameter of the drainage channel is determined according to the characteristic impedance of the corresponding frequency band.
In some embodiments, the different drainage paths do not interact with each other. Here, any two drainage paths do not influence each other as a whole. In some embodiments, the different drainage pathways may share a portion or may be completely independent; whether the drainage channels are partially shared or completely independent, the signals are guided and transmitted without mutual influence. One specific example is provided below in connection with any of the embodiments described above:
as shown in fig. 3, the present example provides an electronic device including:
the antenna can comprise a radiator, and the effective length of the radiator participating in the radiation and the receiving of the wireless signals is different, so that the antenna can be used for receiving and transmitting the wireless signals of different frequency bands;
the tail end of the current guiding path 1 is connected with the matching circuit; the matching circuit is one of the matching networks;
the tail end of the current guide path 2 is connected with an inductor L and/or a capacitor C; the L and/or C is also one of the matching networks described above.
Comparing, the drainage path and the drainage path 2 are known, and the path length and the path shape of the drainage path 1 and the drainage path 2 are different; and the connection of each matching network is independent.
By adopting the electronic equipment provided by the example, the impedance matching without mutual interference in different frequency bands can be realized.
Fig. 4 is a schematic physical structure diagram of the electronic device shown in fig. 3.
Fig. 5A is a schematic diagram illustrating a variation of a Voltage Standing Wave Ratio (VSWR) in each frequency band when the first length of the current guiding path 2 is connected to capacitors with different capacitance values. For example, the first length may be about 14 mm.
The VSWR1 is a VSWR curve when the first length of the drainage path 2 is impedance-matched directly by using the entire drainage path 2 as a drainage path without a capacitor connected thereto. As can be seen from fig. 5A, the drainage path 2 without the capacitor connected thereto has the VSWR minimum at 2Ghz, which shows that the drainage path 2 without the capacitor connected thereto can be used for impedance matching and signal transmission in a frequency band of about 2G.
The VSWR2 is connected to the flow path 2 with the first length and the capacitance value of 1e-12The VSWR curve for the capacitance of F; it can be seen that this time, drainage paths 2 and 1e are included-12The capacitive drain path of F has a very small VSWR at 1.2Ghz and 2 Ghz.
The VSWR3 is connected to the flow path 2 with the first length and has a capacitance of 3e-12The VSWR curve for the capacitance of F; it can be seen that this time, drainage paths 2 and 3e are included-12The capacitive drain path of F has a small VSWR at 0.9Ghz and 2 Ghz.
The VSWR4 is connected to the flow path 2 with the first length and has a capacitance of 7e-12The VSWR curve for the capacitance of F; it can be seen that this time, drainage paths 2 and 7e are included-12The capacitive drain path of F has a very small VSWR at 0.8Ghz, 1.4Ghz and 2 Ghz.
The VSWR5 is connected to the flow path 2 with the first length and the capacitance value of 1e-11The VSWR curve for the capacitance of F; it can be seen that this time, drainage paths 2 and 1e are included-11The capacitive drain path of F has a small VSWR at 0.9Ghz and 2 Ghz.
The VSWR6 is connected to the flow path 2 with the first length and the capacitance value of 1e-10The VSWR curve for the capacitance of F; it can be seen that this time, drainage paths 2 and 1e are included-10The capacitive drain path of F has a very small VSWR at 0.8Ghz and 2 Ghz.
From the above, it can be seen that: when the length of the drainage path of the drainage passage is kept unchanged, the larger the capacitance value connected with the drainage path is, the lower at least one resonant frequency is; here, the resonant frequency is a frequency value corresponding to a frequency band of the wireless signal.
Fig. 5B is a schematic diagram illustrating a variation of a Voltage Standing Wave Ratio (VSWR) in each frequency band when the second length of the current guiding path 2 is connected to capacitors with different capacitance values. For example, the second length may be about 18 mm.
The VSWR1 is a VSWR curve when the second length of the drainage path 2 is impedance-matched directly with the entire drainage path 2 as a drainage path without a capacitor connected thereto. As can be seen from fig. 5A, the drainage path 2 without the capacitor connected thereto has the VSWR minimum at 2Ghz, which shows that the drainage path 2 without the capacitor connected thereto can be used for impedance matching and signal transmission in a frequency band of about 2G.
The VSWR2 is connected to the flow path 2 with the second length and has a capacitance of 3e-12The VSWR curve for the capacitance of F; it can be seen that this time, drainage paths 2 and 1e are included-12The VSWR is small for the capacitive drains of F at 1.2Ghz and 2 Ghz.
The flow guide path 2 having the second length VSWR3 is connected to the capacitor 1e-12The VSWR curve for the capacitance of F; it can be seen that this time, drainage paths 2 and 1e are included-12The capacitive drain path of F has a small VSWR at 0.9Ghz and 2 Ghz.
The flow guide path 2 having the second length VSWR4 is connected to the capacitor 7e-12The VSWR curve for the capacitance of F; it can be seen that this time, drainage paths 2 and 3e are included-12The capacitive drain path of F has a very small VSWR at 1.4Ghz and 2 Ghz.
The flow guide path 2 having the second length VSWR5 is connected to the capacitor 1e-11The VSWR curve for the capacitance of F; it can be seen that this time, drainage paths 2 and 1e are included-11The capacitive drain path of F has a very small VSWR at 0.8Ghz and 2 Ghz.
The flow guide path 2 having the second length VSWR6 is connected to the capacitor 1e-10The VSWR curve for the capacitance of F; it can be seen that this time, drainage paths 2 and 1e are included-10The capacitive drain path of F has a small VSWR at 0.9Ghz and 2 Ghz.
VSThe flow guide path 2 having the second length WR7 is connected to the capacitor 1e-10The VSWR curve for the capacitance of F; it can be seen that this time, drainage paths 2 and 1e are included-10The capacitive drain path of F has a very small VSWR at 0.8Ghz and 2 Ghz.
Fig. 5C is a schematic diagram illustrating a variation of a Voltage Standing Wave Ratio (VSWR) in each frequency band when the third length of the current guiding path 2 is connected to capacitors with different capacitance values. For example, the third length may be about 20 mm.
The VSWR1 is a VSWR curve when the third length of the drainage path 2 is impedance-matched by directly using the entire drainage path 2 as a drainage path without connecting a capacitor thereto. As can be seen from fig. 5A, the drainage path 2 without the capacitor connected thereto has the VSWR minimum at 2Ghz, which shows that the drainage path 2 without the capacitor connected thereto can be used for impedance matching and signal transmission in a frequency band of about 2G.
The flow guide path 2 having the third length VSWR2 is connected to the capacitor 1e-12The VSWR curve for the capacitance of F; it can be seen that this time, drainage paths 2 and 1e are included-12The VSWR is small for the capacitive drain paths 1.2Ghz and 2Ghz of F.
The flow guide path 2 having the third length VSWR3 is connected to the capacitor 1e-12The VSWR curve for the capacitance of F; it can be seen that this time, drainage paths 2 and 1e are included-12The capacitive drain path of F has a very small VSWR at 1 and 2 Ghz.
The flow guide path 2 having the third length VSWR4 is connected to the capacitor 3e-12The VSWR curve for the capacitance of F; it can be seen that this time, drainage paths 2 and 3e are included-12The capacitive drain path of F has a very small VSWR at 0.8Ghz and 2 Ghz.
The flow guide path 2 having the third length VSWR5 is connected to the capacitor 7e-12The VSWR curve for the capacitance of F; it can be seen that this time, drainage paths 2 and 7e are included-12The capacitive drain path of F has a very small VSWR at 0.8Ghz and 2 Ghz.
The flow guide path 2 having the third length VSWR6 is connected to the capacitor 1e-10The VSWR curve for the capacitance of F; it can be seen that this time, drainage paths 2 and 1e are included-10The capacitive drain path of F has a very small VSWR at 0.6Ghz and 2 Ghz.
The embodiment that this application provided does not have a plurality of drainage passageways in aiming at prior art, and the wireless signal of a plurality of different channels that an antenna received directly passes through a matching network and passes through switching element to a plurality of radio frequency passageways, and a matching network needs a plurality of parts to realize the separation of different frequency channel wireless signal, will cause the loss to the wireless signal of antenna to the increased part to different channels in the matching network, also can cause the wireless signal of two channels to influence each other. According to the embodiment provided by the application, the plurality of drainage channels are arranged between the antenna and the plurality of radio frequency channels, so that the wireless signals of different frequency bands received by one antenna at the same time can drain the wireless signals of the frequency bands corresponding to the plurality of drainage channels in a lossless manner.
In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. The above-described device embodiments are merely illustrative, for example, the division of the unit is only a logical functional division, and there may be other division ways in actual implementation, such as: multiple units or components may be combined, or may be integrated into another system, or some features may be omitted, or not implemented. In addition, the coupling, direct coupling or communication connection between the components shown or discussed may be through some interfaces, and the indirect coupling or communication connection between the devices or units may be electrical, mechanical or other forms.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed on a plurality of network units; some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, all the functional units in the embodiments of the present invention may be integrated into one processing module, or each unit may be separately used as one unit, or two or more units may be integrated into one unit; the integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.
Those of ordinary skill in the art will understand that: all or part of the steps for implementing the method embodiments may be implemented by hardware related to program instructions, and the program may be stored in a computer readable storage medium, and when executed, the program performs the steps including the method embodiments; and the aforementioned storage medium includes: a mobile storage device, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. An electronic device, the electronic device comprising:
a radio frequency integrated circuit;
the radio frequency integrated circuit comprises a plurality of radio frequency channels, a plurality of radio frequency integrated circuits and a plurality of radio frequency channels, wherein each radio frequency channel is connected with the radio frequency integrated circuit;
a plurality of drainage pathways; different drainage channels respectively process the electric signals of different frequency bands;
the switching device is positioned between the multi-path radio frequency channel and the plurality of drainage channels and is used for selecting the radio frequency channel connected with the drainage channels;
the antenna is connected with the plurality of drainage channels, wherein the antenna is used for supporting the transceiving of wireless signals of at least two frequency bands, and the plurality of drainage channels are independent of the antenna.
2. The electronic device of claim 1,
the drainage pathway includes:
and the current guide path has a first impedance when transmitting an electric signal of a preset frequency band, wherein the first impedance is matched with the characteristic impedance of the radio frequency channel for transmitting the preset frequency band.
3. The electronic device of claim 1,
the drainage pathway includes:
a current guiding path having a second impedance when transmitting an electric signal of a predetermined frequency band;
and the matching network has a third impedance when transmitting the electric signal of the preset frequency band, wherein the sum of the second impedance and the third impedance is matched with the characteristic impedance of the radio frequency path for transmitting the preset frequency band.
4. The electronic device of claim 3, wherein the matching networks of different of the drainage paths do not interact with each other.
5. The electronic device of claim 2, further comprising:
a circuit board; wherein the current guiding path is located on the circuit board;
or,
the drainage path is located on the antenna.
6. The electronic device of claim 2, wherein the specification parameters of the drainage path comprise at least one of:
a path shape;
a path length;
a path width;
a path thickness;
wherein the different drainage paths have different path shapes, different path lengths of the drainage paths, and/or different path widths of the drainage paths; and/or the path thickness of different ones of the drainage paths is different.
7. The electronic device of claim 6,
one of the drainage paths is used for electrical signal transmission of the wireless signal of one frequency band.
8. The electronic device of claim 5,
the characteristic impedance is determined according to the impedance of a radio frequency channel for processing the electric signal of the corresponding frequency band.
9. The electronic device of claim 8,
and the specification parameters of the drainage channel are determined according to the characteristic impedance of the corresponding frequency band.
10. The electronic device of claim 1,
different drainage channels do not influence each other.
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