CN108321543A - A kind of antenna and electronic equipment - Google Patents

Abstract

The invention discloses an antenna, comprising: at least two antenna units, at least two antenna feeders connected to the at least two antenna units, and a control unit, wherein the antenna unit includes an antenna main body, a control switch and a feeder point, the antenna body is connected to the corresponding antenna feeder through the feed point, the control switch is connected between the antenna body and the feed point, and the control unit is used to control each of the Whether the control switch of the antenna unit is turned on or not. Correspondingly, the present invention also provides an electronic device. By adopting the invention, the frequency bandwidth of the antenna can be increased without changing the current distribution of the antenna.

Description

A kind of antenna and electronic equipment

technical field

The invention relates to the technical field of antennas, in particular to an antenna and electronic equipment.

Background technique

With the popularization of LTE (Long Term Evolution, Long Term Evolution) technology, the frequency band that the antenna needs to support becomes wider and wider. But at the same time, users have higher requirements on the appearance of electronic equipment, which makes electronic equipment more and more miniaturized and thinner. In this case, the antenna space of electronic equipment is also being gradually compressed, and the antenna space is basically proportional to the bandwidth. Therefore, it becomes a difficult problem to achieve a wider frequency band in a smaller antenna space.

The existing technology is to set multiple grounding points. Since the closer the grounding point is to the feed point, the higher the frequency. By switching between different grounding points, the resonant length of the antenna is changed, thereby achieving the purpose of extending the frequency band of the antenna. Fig. 1 is a structural diagram of an antenna in the prior art. As shown in Fig. 1, it is assumed that the switch of receiving point 1 is closed and the switch of grounding point 2 is turned off, the frequency band that the antenna can radiate is F1, and the frequency band of receiving point 1 is F1. The switch is turned off, the switch of the ground point 2 is closed, and the frequency band that the antenna can radiate is F2. Because the distance between the ground point and the feeding point is different, F1 and F2 are not equal; however, because each ground point in the circuit will be A certain amount of energy is lost. Therefore, adding multiple ground points will change the current distribution of the antenna and affect the efficiency of the antenna.

Contents of the invention

Embodiments of the present invention provide an antenna and an electronic device, which can improve the frequency bandwidth of the antenna while not changing the current distribution of the antenna.

The invention provides an antenna, comprising:

At least two antenna units, at least two antenna feeders connected to the at least two antenna units, and a control unit, wherein the antenna unit includes an antenna body, a control switch and a feed point, and the antenna body passes through the feeder The electric point is connected to the corresponding antenna feeder, the control switch is connected between the antenna main body and the feed point, and the control unit is used to control the conduction of the control switch of each antenna unit or not.

The present invention also provides an electronic device, comprising:

A body and an antenna, the antenna is arranged on the body, and the antenna is the antenna according to any one of claims 1-7.

Adopt the present invention, have following beneficial effect:

The antenna provided by the present invention includes at least two antenna units, and each antenna unit includes an independent feed point. Since the positions of each feed point are different, the resonance length of each antenna unit is different. Furthermore, multiple antenna units The resonant points formed by the composed antennas are complementary, which satisfies wider bandwidth coverage and overcomes the problem of changing the current distribution of the antennas.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings that need to be used in the embodiments. Obviously, the drawings in the following description are some embodiments of the present invention. Those of ordinary skill in the art can also obtain other drawings based on these drawings without any creative effort.

FIG. 1 is a schematic diagram of an antenna in the prior art;

Fig. 2 is a schematic diagram of an antenna provided by an embodiment of the present invention;

FIG. 3 is a schematic diagram of another antenna provided by an embodiment of the present invention;

FIG. 4 is a schematic diagram of another antenna provided by an embodiment of the present invention;

Fig. 5 is a schematic structural diagram of an electronic device provided by an embodiment of the present invention.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

In an embodiment of the present invention, the antenna includes at least two antenna units, at least two antenna feeders connected to the at least two antenna units, and a control unit, wherein the antenna unit includes an antenna main body, a control switch and a feeder point, the antenna body is connected to the corresponding antenna feeder through the feed point, the control switch is connected between the antenna body and the feed point, and the control unit is used to control each of the Whether the control switch of the antenna unit is turned on or not, the antenna in the embodiment of the present invention includes at least two antenna units, each antenna unit contains an independent feed point, and the position of each feed point can be controlled arbitrarily, so that The resonance length of each antenna unit is different, and further, the resonance point formed by the antenna composed of multiple antenna units will form a complementarity, which satisfies wider bandwidth coverage and overcomes the problem of changing the current distribution of the antenna;

For ease of description, the antenna in the embodiment of the present invention takes two antenna units as an example; please refer to Figure 2, which is a schematic diagram of an antenna provided in the embodiment of the present invention; the antenna in this embodiment is shown in Figure 2 2 At least include: a first antenna unit 21, a second antenna unit 22, a first antenna feeder 23, a second antenna feeder 24 and a control unit 25, the first antenna unit 21 includes an antenna main body 212, a control switch 212 and a feeder At point 213, the antenna main body 212 is connected to the corresponding antenna feeder 23 through the feeding point 213, the control switch 212 is connected between the antenna main body 212 and the feeding point 213, and the first The second antenna unit 22 includes an antenna main body 221, a control switch 222 and a feed point 223, the antenna main body 221 is connected to the corresponding antenna feeder 23 through the feed point 223, and the control switch 222 is connected to the antenna Between the main body 221 and the feeding point 223, the control unit 25 is used to control whether the control switch of each antenna unit is turned on or not;

Specifically, each of the antenna feeders is connected to a signal source, and the signal source can generate signals of multiple frequency bands, and the signal frequency bands that can be radiated by each antenna unit are preset. It is assumed that the signal channels that the first antenna unit 21 can radiate are : GSM900MHz, the bandwidth range is 890MHz to 960MHz; the signal channel that the second antenna unit 22 can radiate is GSM850MHz, and the bandwidth range is 824MHz to 894MHz; the signal channel generated by the signal source is GSM900MHz and GSM850MHz, and the control unit 15 first controls the The control switch 212 is closed, and the control switch 222 is disconnected, allowing the signal of the GSM900MHz channel to be transmitted through the first antenna unit 21; The signal of the channel is transmitted through the second antenna unit 22, and the control unit 25 controls each antenna unit to transmit signals in turn, which can reduce the interference between the antennas; it should be noted that the control unit 25 controls the closing sequence of the control switches of each antenna unit. The actual situation is adjusted, and the present invention cannot be limited by this;

Preferably, the frequency bands that each antenna unit can radiate may not overlap, so as to improve the bandwidth of the antenna;

Further, the antenna unit may further include a reactance element group, the reactance element set includes at least two reactance elements, and at least two of the reactance elements are connected in parallel between the antenna main body and the control switch , for adjusting the resonant frequency of the antenna unit, if the reactance element group only includes two reactance elements, the two reactance elements are connected in parallel between the antenna main body and the control switch; If the reactance element group includes three or more reactance elements, taking three as an example, two of the reactance elements can be connected in parallel between the antenna main body and the control switch, and the other reactance element It can be connected in series with one of the above two reactance elements, that is, in the reactance element group, there are at least two reactance elements connected in parallel between the antenna body and the control switch, The connection modes of the remaining reactance components can be adjusted according to actual conditions.

Wherein, the reactance element includes an inductor or a capacitor;

When the reactance element is an inductance, when the value range of the inductance is 1.0 to 15 nanohenries, the radiation efficiency of the antenna can be improved while realizing the wide coverage frequency band of the antenna, and each of the same reactance element group The values of the inductance are different;

When the reactance element is a capacitor, and the value range of the capacitor is 0.5 to 10 picofarads, the radiation efficiency of the antenna can be improved while realizing the wide coverage frequency band of the antenna, and each of the same reactance element group The values of the capacitors are different.

Optionally, each antenna unit includes the reactance element group, or at least one antenna unit includes the reactance element group, and the specific situation is adjusted according to the actual situation;

Please refer to FIG. 3. FIG. 3 is a schematic diagram of another antenna provided by an embodiment of the present invention; as shown in FIG. Between the antenna main body 211 and the control switch 212, it is used to adjust the resonant frequency of the antenna unit 21; the antenna main body 211 and the control switch 212 in the second antenna unit 22 are directly connected, that is In other words, the second antenna unit 22 does not include a reactive element group; for the convenience of description, the reactive element group 214 in the embodiment of the present invention includes two capacitors as an example;

In a specific implementation, as shown in FIG. 3 , the reactance element group 214 includes a first capacitor 2141 and a second capacitor 2142, the value range of the first capacitor 2141 and the second capacitor 2142 is 0.5-1.0 picofarads, and the first capacitor The values of 2141 and the second capacitor 2142 are different. Assume that the signal frequency band that the first antenna unit 21 can radiate is: GSM900MHz, that is, the bandwidth range is 890MHz to 960MHz, and the first antenna can be connected by the first capacitor 2141 and the second capacitor 2142 The frequency band of the unit 21 is divided into two parts. When the control switch 212 is connected to the first capacitor 2141, the frequency band that the first antenna unit 21 can radiate is 890 MHz to 930 MHz; when the control switch 212 is connected to the first capacitor 2142, the The frequency band that the first antenna unit 21 can radiate is 930MHz-960MHz;

The signal frequency band that the first antenna unit 21 can radiate is: GSM900MHz. If the first antenna unit 21 is not provided with a reactance element group 214, the frequency of the antenna should be controlled to vary between 890MHz and 960MHz, and the fine-tuning range of the antenna is 70MHz. If the first antenna unit 21 is provided with a reactance element group 214, further fine-tuning range can be controlled at 40MHz, therefore, by increasing the resonant frequency of the reactance element group to adjust the antenna unit, the adjustment range of the form of the antenna itself can be reduced, and then, Reduce the implementation difficulty of the antenna.

Further, as shown in FIG. 4, the first antenna unit 21 can also be connected in parallel with the reactance element group 214 through a metal wire, and when the radio frequency signal of the antenna is at a low frequency, the control switch 212 can be connected with the reactance element group 214. The corresponding reactance elements in the element group 214 are connected to realize the radiation effect in the low frequency band; and when the radio frequency signal of the antenna is at a high frequency, the control switch 212 can be connected to the metal wiring to realize the radiation in the high frequency band.

Wherein, the antenna may include a slot antenna.

Please refer to FIG. 5. FIG. 5 is a schematic structural diagram of an electronic device provided by an embodiment of the present invention; as shown in FIG. It includes various functional modules such as a circuit board, a display, a shell of an electronic device, a microphone, a speaker, a home button, and a touch area to complete the basic functions of the electronic device. The antenna 52 includes a slot antenna.

The electronic device is specifically, for example, a communication electronic device such as a mobile phone or a tablet computer.

Wherein, the antenna 51 specifically includes two antenna units, at least two antenna feeders connected to the at least two antenna units, and a control unit, wherein the antenna unit includes an antenna main body, a control switch and a feed point, so The antenna main body is connected to the corresponding antenna feeder through the feed point, the control switch is connected between the antenna main body and the feed point, and the control unit is used to control each of the antenna units Whether the control switch is turned on or not;

Further, the antenna unit further includes a reactance element group, the reactance element group includes at least two reactance elements, at least two of the reactance elements are connected in parallel between the antenna main body and the control switch, for adjusting the resonant frequency of the antenna unit;

Wherein, the reactance element includes an inductor or a capacitor;

If the reactance element is an inductance, the value range of the inductance is 1.0-15 nanohenry, and the value of each inductance in the same reactance element group is different.

If the reactance element is a capacitor, the value range of the capacitor is 0.5-10 picofarads, and the value of each capacitor in the same reactance element group is different.

Further, the frequency bands that can be radiated by each antenna unit do not overlap.

In order to obtain better antenna performance, when the antenna is installed on an electronic device, the antenna needs to be kept away from the following metal objects and keep a relatively long distance, such as a distance of more than 6mm. Preferably, the following objects have good grounding: LCD, camera, Bending cables for LCD screens, buttons, etc., wires for connecting oscillators or speakers, screws or nuts containing metal. The best setting location is the upper part of the battery, and the farther away from the battery, the better. Of course, it can also be arranged on the top of the electronic equipment.

It can be understood that, for the antenna 52 in this embodiment, reference may be specifically made to the relevant description of the method embodiment in FIG. 2 or FIG. 4 , and details are not repeated here.

It should be noted that, in the foregoing embodiments, descriptions of each embodiment have their own emphases, and for parts that are not described in detail in a certain embodiment, reference may be made to relevant descriptions of other embodiments. Secondly, those skilled in the art should also know that the embodiments described in the specification belong to preferred embodiments, and the actions and modules involved are not necessarily required by the embodiments of the present invention.

Those of ordinary skill in the art can understand that all or part of the processes in the methods of the above embodiments can be implemented through computer programs to instruct related hardware, and the programs can be stored in a computer-readable storage medium. During execution, it may include the processes of the embodiments of the above-mentioned methods. Wherein, the storage medium may be a magnetic disk, an optical disk, a read-only memory (Read-Only Memory, ROM) or a random access memory (Random Access Memory, RAM) and the like.

The above disclosures are only preferred embodiments of the present invention, and certainly cannot limit the scope of rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention still fall within the scope of the present invention.

Claims (9)

1. An antenna, characterized in that it comprises at least two antenna units, at least two antenna feeders connected to the at least two antenna units, a control unit connected to the at least two antenna feeders, and a signal source, the The control unit is connected between the at least two antenna feeders and the signal source; Wherein, the antenna unit includes an antenna main body, a control switch and an independent feed point, the antenna main body is connected to the corresponding antenna feed line through the independent feed point, and the control switch is connected to the antenna main body Between the feeding point and the feeding point, the resonance length of each antenna unit can be different by controlling the path connecting the independent feeding point of each antenna unit to the antenna main body; The control unit is used to control whether the control switch of each antenna unit is turned on or not. 2. The antenna according to claim 1, wherein the antenna unit further comprises a reactance element group, the reactance element group comprises at least two reactance elements, and at least two of the reactance elements are connected in parallel to The space between the antenna main body and the control switch is used to adjust the resonant frequency of the antenna unit. 3. The antenna according to claim 2, wherein the antenna main body is connected in parallel with the reactance element group through a metal wire, and the control switch is connected with the corresponding reactance element in the reactance element group or passes through the metal wire. The traces are connected to the antenna main body. 4. The antenna according to claim 1, wherein the reactance element comprises an inductor or a capacitor. 5. The antenna according to claim 4, wherein when the reactance element is an inductance, the value range of the inductance is 1.0 to 15 nanohenry, and each of the same reactance element group The value of inductance is different. 6. The antenna according to claim 4, wherein when the reactance element is a capacitor, the value range of the capacitor is 0.5 to 10 picofarads, and each of the same reactance element group The value of the capacitor is different. 7. The antenna of claim 1, wherein the antenna comprises a slot antenna. 8. The antenna according to claim 1, wherein the frequency bands that can be radiated by each antenna unit do not overlap. 9. An electronic device, characterized by comprising a body and an antenna, the antenna is disposed on the body, and the antenna is the antenna according to any one of claims 1-8.