Communication device

Abstract

The embodiment of the invention relates to communication equipment, and the equipment comprises a radio frequency chip which is used for generating a radio frequency signal; the radio frequency test seat is connected with the radio frequency chip and is used for transmitting a radio frequency signal from the radio frequency chip; the first radiator is provided with a first feeding point, a second feeding point and a grounding point, the grounding point is arranged between the first feeding point and the second feeding point, the first feeding point and the second feeding point are respectively connected with the radio frequency test seat, the first radiator is provided with a first end and a second end, and the second feeding point is arranged at the first end. The radio frequency signals from the same radio frequency test seat are respectively transmitted to the first feeding point and the second feeding point, so that the first radiator can radiate signals with the same frequency band but different resonance frequency points, and the bandwidth of the communication equipment under the frequency band is widened; and thus, the communication quality of the communication equipment in shielding scenes such as transverse screen holding is ensured.

Description

Technical Field

[0001] This application relates to the field of communication technology, and in particular to a communication device. Background Technology

[0002] With the continuous development of communication technology, people have increasingly higher requirements for communication equipment. However, in scenarios such as holding the device horizontally or in an obstructed position, the hand may block the antenna components, leading to a decrease in the communication quality of the device, or even disconnection, thus affecting the user's communication experience. Summary of the Invention

[0003] Therefore, it is necessary to provide a communication device with better communication quality in obstructed scenarios to address the aforementioned technical problems.

[0004] This application provides a communication device, including:

[0005] Radio frequency (RF) chips are used to generate RF signals;

[0006] An RF test socket, connected to the RF chip, is used to transmit the RF signal from the RF chip;

[0007] The first radiator has a first feed point, a second feed point, and a ground point. The ground point is located between the first feed point and the second feed point. The first feed point and the second feed point are respectively connected to the radio frequency test socket. The first radiator has a first end and a second end, and the second feed point is located at the first end.

[0008] The aforementioned communication device, by transmitting radio frequency signals from the same RF test socket to the first feed point and the second feed point respectively, eliminates the need for additional RF signal sources in hardware. This allows the first radiator to operate simultaneously in two resonant modes, enabling it to radiate signals within the same frequency band but with different resonant frequencies, thereby widening the bandwidth of the communication device in that frequency band. Correspondingly, even if the communication device experiences obstruction, causing a decrease in communication performance at some frequencies, the communication performance at the remaining frequencies can still be guaranteed, thus ensuring communication quality in scenarios such as horizontal screen holding with obstructions. Attached Figure Description

[0009] To more clearly illustrate the technical solutions in the embodiments or related technologies of this application, the accompanying drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0010] Figure 1This is one of the structural schematic diagrams of a communication device according to an embodiment;

[0011] Figure 2 This is a second schematic diagram of the structure of a communication device according to an embodiment;

[0012] Figure 3 This is the third schematic diagram of the structure of a communication device according to one embodiment;

[0013] Figure 4 This is a partial schematic diagram of a communication device according to one embodiment;

[0014] Figure 5 A schematic diagram of the current in a 1 / 4 wavelength resonant mode according to an embodiment;

[0015] Figure 6 A schematic diagram of the current in a 1 / 2 wavelength resonant mode according to an embodiment;

[0016] Figure 7 This is a second partial schematic diagram of a communication device according to an embodiment;

[0017] Figure 8 This is a schematic diagram of the phase shifter configuration according to one embodiment;

[0018] Figure 9 Data graphs of the S11 parameters of the first radiator under different phase differences;

[0019] Figure 10 Efficiency diagrams of the first radiator under different phase differences;

[0020] Figure 11 S11 parameters and efficiency of a communication device in free space, as described in one embodiment;

[0021] Figure 12 S11 parameters and efficiency of a communication device as described in one embodiment when held in the right hand;

[0022] Figure 13 The fourth schematic diagram of the communication device in this embodiment.

[0023] Component designation explanation:

[0024] RF chip: 100; RF test socket: 200; First radiator: 300; Cable connector: 400; First frame: 510; Second frame: 520; Third frame: 530; Battery: 600; Phase shifter: 700; First tuning module: 810; Second tuning module: 820; Third tuning module: 830; Second radiator: 900. Detailed Implementation

[0025] In order to make the purpose, technical solutions and advantages of this application more clearly understood, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0026] It is understood that the terms "first," "second," etc., used in this application may be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another. For example, without departing from the scope of this application, a first feed point may be referred to as a second feed point, and similarly, a second feed point may be referred to as a first feed point.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. "Multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. "Several" means at least one, such as one, two, etc., unless otherwise explicitly specified.

[0028] This application provides a communication device, which can be, but is not limited to, various personal computers, laptops, smartphones, tablets, IoT devices, and portable wearable devices. IoT devices can include smart speakers, smart TVs, smart air conditioners, smart in-vehicle devices, etc. Portable wearable devices can include smartwatches, smart bracelets, head-mounted devices, etc. In related technologies, in some communication devices that can improve communication quality when held horizontally, the width of the local metal of the antenna assembly is very thin, resulting in high manufacturing costs and poor yield. Therefore, this application provides a new communication device with lower manufacturing requirements and the ability to improve communication quality in scenarios such as horizontal holding with obstructions.

[0029] Specifically, Figure 1 This is one of the structural schematic diagrams of a communication device according to an embodiment. Referring to the figure, the communication device includes an RF chip 100, an RF test socket 200, and a first radiator 300.

[0030] The radio frequency (RF) chip 100 is used to generate RF signals. The RF test socket 200 is connected to the RF chip 100 and is used to transmit the RF signals from the RF chip 100. Specifically, the RF test socket 200 ensures the connection between the RF chip 100 and the test instrument through internal connectors and pins, so that the RF signals can be transmitted stably and accurately. That is, the RF test socket 200 in this embodiment is retained after the testing phase of the communication equipment to support the power supply function to the first radiator 300.

[0031] The first radiator 300, as part of the antenna assembly, has a first feed point A1, a second feed point A2, and a ground point. The first feed point A1 and the second feed point A2 are respectively connected to the RF test socket 200. Specifically, the first radiator 300 in this embodiment can be implemented based on the mid-frame of a communication device, such as an antenna radiator designed using a mid-frame formed from the plastic and metal of the communication device, or a metal stub antenna radiator designed with a metal mid-frame. The first radiator 300 can also be a laser direct-structuring (LDS) radiator, a flexible printed circuit (FPC) radiator, a printed direct-structuring (PDS) radiator, etc., and this embodiment is not limited thereto. The ground point is located between the first feed point A1 and the second feed point A2, and is used to connect to the reference ground of the antenna assembly. The specific form of the reference ground includes, but is not limited to, a metal conductive plate, a metal conductive layer formed inside a flexible circuit board, or a rigid circuit board. It is understood that in some embodiments, the antenna assembly itself may not have a reference ground, but may be directly electrically connected or indirectly electrically connected to the reference ground of the communication device or the reference ground of the electronic components within the communication device via a conductive element. Further, the first radiator 300 has a first end B1 and a second end B2, and the second feed point A2 is located at the first end B1.

[0032] In this embodiment, by transmitting radio frequency signals from the same radio frequency test socket 200 to the first feed point A1 and the second feed point A2 respectively, the first radiator 300 can operate in two resonant modes simultaneously without the need for additional radio frequency signal sources in hardware. This allows the first radiator 300 to radiate signals in the same frequency band but with different resonant frequencies, thereby widening the bandwidth of the communication device in that frequency band. Correspondingly, even if the communication device is obstructed, causing a decrease in the communication performance of some frequency points, the communication performance of the remaining frequency points can still be guaranteed, thus ensuring the communication quality of the communication device in obstructed scenarios such as holding the device horizontally.

[0033] Figure 2 This is a second schematic diagram of the structure of a communication device according to an embodiment, with reference to... Figure 2In one embodiment, the communication device further includes a cable connector 400, through which the first feed point A1 is connected to the RF test socket 200. The cable connector 400 can also be referred to as a cable socket. During testing, the cable connector 400 is used to connect the RF test socket 200 to other auxiliary test equipment, or to the RF component or device under test, to construct a complete test environment. In this embodiment, by connecting the first feed point A1 and the RF test socket 200 through the existing cable connector 400 during testing, a reliable RF signal transmission feed path can be provided, thereby achieving accurate excitation of the first feed point A1. Further, the communication device may include multiple cable connectors 400. Figure 2 Taking the two cable connectors 400 shown as an example, one cable connector 400 can be placed close to the RF test socket 200, and the other cable connector 400 can be placed close to the first feed point A1. By setting multiple cable connectors 400, the wiring between the RF test socket 200 and the first feed point A1 can be set along the cable connectors 400, which is less likely to cause shaking and displacement, thereby further improving the stability and reliability of the wiring.

[0034] In one embodiment, the cable connector 400 is connected to the RF test socket 200 via circuit board traces and is also connected to the first feed point A1 via circuit board traces. Specifically, when the communication device includes multiple cable connectors 400, the multiple cable connectors 400 are connected to each other via coaxial cables. The cable connector 400 closest to the RF test socket 200 is connected to the RF test socket 200 via circuit board traces, and the cable connector 400 closest to the first feed point A1 is connected to the first feed point A1 via circuit board traces. The RF test socket 200 is connected to the second feed point A2 via circuit board traces. The circuit board traces can be, but are not limited to, printed circuit board (PCB) traces or flexible printed circuit (FPC) traces. It is understood that the above connection method is only for illustrative purposes; MPI (Message Passing Interface) communication traces or other methods can also be used to connect the RF test socket 200 to each feed point. This embodiment does not limit this.

[0035] Figure 3 This is a third schematic diagram of the structure of a communication device according to an embodiment, with reference to... Figure 3 In one embodiment, the communication device also includes a mid-frame and a battery 600.

[0036] The middle frame can be made of materials such as plastic, glass, ceramic, fiber composite materials, or metal. The middle frame includes a first frame 510, a second frame 520, a third frame 530, and a fourth frame (not shown) connected sequentially. The first frame 510, second frame 520, third frame 530, and fourth frame are connected end-to-end. The first frame 510 and third frame 530 are positioned opposite each other, and the second frame 520 and fourth frame are positioned opposite each other. For example, the first frame 510 and third frame 530 are long frames, and the second frame 520 and fourth frame are short frames. The first radiator 300 extends from the first frame 510 to the second frame 520. A first feed point A1 is located near one end of the first frame 510, and a second feed point A2 is located near the other end of the first frame 510. One end of the first frame 510 is connected to the second frame 520. When the first radiator 300 is applied to a communication device, in scenarios such as horizontal screen holding, by placing the two ends of the first radiator 300 on two adjacent different frame edges, and ensuring that both the first end B1 and the second end B2 of the first radiator 300 have gaps between them and other components, it is less likely that the two gaps will be simultaneously held or blocked. Moreover, even if one of the two gaps is blocked, the first radiator 300 can still transmit and receive signals, thus exhibiting good communication performance.

[0037] The battery 600 is located within the space enclosed by the middle frame. The first feed path between the RF test socket 200 and the first feed point A1 passes sequentially through the gap between the battery 600 and the third frame 530, and the gap between the battery 600 and the second frame 520. The second feed path between the RF test socket 200 and the second feed point A2 passes through the gap between the battery 600 and the fourth frame. That is, the wiring between the RF test socket 200 and each feed point is spaced apart from the battery 600 to reduce interference from current and other factors in the battery 600 on the RF signals transmitted on the wiring, thereby improving the stability of the RF signals.

[0038] Figure 4 This is a partial schematic diagram of a communication device according to one embodiment. Figure 4 The radio frequency (RF) chip and RF test socket in the communication equipment have been omitted. (Reference) Figure 4In one embodiment, the communication device includes a first tuning module 810. The first tuning module 810 is connected to the second terminal B2 of the first radiator 300 and is used to adjust the resonant frequency of the first radiator 300. Specifically, the first tuning module 810 can control the effective electrical length of the first radiator 300, thereby adjusting the target frequency band and resonant frequency supported by the first radiator 300. The target frequency band is, for example, a low-frequency band, including but not limited to B5, B8, N28, etc. Further, the first tuning module 810 may consist of a switch control circuit, an adjustable capacitor, an adjustable inductor, etc. For example, the first tuning module 810 may include at least one frequency selection unit and a first switching unit. The first switching unit has a grounded common terminal and multiple free terminals, and is used to select and conduct a signal transmission path between any free terminal and the common terminal. One end of the frequency selection unit is connected to the second terminal B2 of the first radiator 300, and the other end is connected to the free terminal of the first switching unit. Furthermore, the first switching unit may have a portion of its free terminals not connected to the frequency selection unit, allowing for more flexible adjustment of the resonant frequency of the first radiator 300. For example, the first switching unit may have one free terminal directly connected to the second terminal B2 of the first radiator 300, so that the resistance between this free terminal and ground is 0Ω. The first switching unit may also have another free terminal left floating, so that the resistance between this free terminal and ground is between 0 ohms and a high impedance state.

[0039] Continue to refer Figure 4In one embodiment, the communication device further includes a second tuning module 820. The second tuning module 820 is connected to the second feed point A2 and is used to adjust the impedance at the second feed point A2. Specifically, one end of the second tuning module 820 is connected to the RF test socket 200 via a trace, and the other end is connected to the second feed point A2. The second tuning module 820 is used to adjust the impedance matching of the first radiator 300 to improve its radiation performance. Specifically, the second tuning module 820 may include a first inductor L1, a second inductor L2, and a first capacitor C1, and the inductance and capacitance values ​​of these components are adjustable to adapt to different frequency bands. The two ends of the first inductor L1 are connected to the RF test socket 200 and the second feed point A2, respectively; the two ends of the second inductor L2 are connected to the second feed point A2 and the ground terminal, respectively; and the two ends of the first capacitor C1 are connected to the RF test socket 200 and the ground terminal, respectively. It is understood that the second tuning module 820 may include multiple impedance units, each with different impedance information. When the first radiator 300 is used to radiate signals of different frequency bands, the second tuning module 820 can connect to different impedance units respectively, so that impedance matching can be achieved well for each frequency band. It is understood that the above-described configuration of the second tuning module 820 is for illustrative purposes only, and other circuits may also be used; this embodiment does not limit its implementation.

[0040] In one embodiment, the first radiator 300 has a quarter-wavelength resonant mode and operates at a first resonant frequency through adjustment by the first tuning module 810. Specifically, Figure 5 This is a schematic diagram of the current in the 1 / 4 wavelength resonant mode of one embodiment, with reference to... Figure 5 In the quarter-wavelength resonant mode, the current on the first radiator 300 includes the current from the ground point to the first terminal B1 and the current from the ground point to the second terminal B2. These two currents convection, thus enabling the first radiator 300 to achieve a quarter-wavelength resonant mode. The quarter-wavelength resonant mode is a relatively efficient resonant mode, thereby enhancing the transmission and reception efficiency of the corresponding frequency band. For example, assuming that the two resonant modes of the first radiator 300 are used to support the same low-frequency band, the synchronous feeding of the first feed point A1 and the second feed point A2 allows the first radiator 300 to support a larger bandwidth. Furthermore, due to the high efficiency of the quarter-wavelength resonant mode, when the communication equipment communicates through the low-frequency band, even if there is a frequency offset, it can be overcome by the larger bandwidth, ensuring that the offset frequency still falls within the range of the low-frequency band supported by the first radiator 300, and achieving good transmission and reception efficiency.

[0041] In one embodiment, the first radiator 300 has a half-wavelength resonant mode adjusted by the first tuning module 810 to have a second resonant frequency. Specifically, Figure 6 This is a schematic diagram of the current in the 1 / 2 wavelength resonant mode of one embodiment, with reference to... Figure 6 In the 1 / 2 wavelength resonant mode, the current on the first radiator 300 flows from the first end B1 to the second end B2. The 1 / 2 wavelength resonant mode can fully excite the current in the middle frame in the direction of the long frame extension to improve the performance of space OTA (over-the-air) technology, which can improve it by about 2dB-3dB in some embodiments.

[0042] Furthermore, based on the aforementioned first tuning module 810 and second tuning module 820, the communication device can adjust the first tuning module 810 and the second tuning module 820 respectively according to the target resonant frequency to improve the communication quality of the communication device. For example, when it is necessary to radiate signals in the N28 band, both the first tuning module 810 and the second tuning module 820 can be switched to Coff. When it is necessary to radiate signals in the B5 band, the impedance of the first tuning module 810 can be adjusted to 43nH, and the impedance of the second tuning module 820 can be adjusted to 39nH. When it is necessary to radiate signals in the B8 band, the impedance of the first tuning module 810 can be adjusted to 30nH, and the impedance of the second tuning module 820 can be adjusted to 27nH. That is, in this embodiment, the first radiator 300 can be adjusted to operate at the target resonant frequency by the first tuning module 810, and the first radiator 300 can have a better impedance matching effect by adjusting the second tuning module 820, thereby improving the transmission and reception efficiency of the first radiator 300.

[0043] Figure 7 This is a second partial schematic diagram of a communication device according to an embodiment, with reference to... Figure 7In one embodiment, the communication device further includes a third tuning module 830. The third tuning module 830 is connected to the first feed point A1 and is used to adjust the impedance at the first feed point A1. Specifically, one end of the third tuning module 830 is connected to the RF test socket 200 via a trace, and the other end is connected to the first feed point A1. The third tuning module 830 is used to adjust the impedance matching of the first radiator 300 to improve its radiation performance. Specifically, the third tuning module 830 may include a third inductor L3, a fourth inductor L4, and a second capacitor C2, and the inductance and capacitance values ​​of these components are adjustable to adapt to different frequency bands. The two ends of the third inductor L3 are connected to the RF test socket 200 and the first feed point A1, respectively; the two ends of the fourth inductor L4 are connected to the first feed point A1 and the ground terminal, respectively; and the two ends of the second capacitor C2 are connected to the RF test socket 200 and the ground terminal, respectively. It is understood that the third tuning module 830 may include multiple impedance units, each with different impedance information. When the first radiator 300 is used to radiate signals of different frequency bands, the third tuning module 830 can connect to different impedance units respectively, so that impedance matching can be achieved well for each frequency band. It is understood that the above-described configuration of the third tuning module 830 is for illustrative purposes only, and other circuits can also be used for implementation; this embodiment does not limit its implementation.

[0044] In one embodiment, the communication device further includes a phase shifter 700. The phase shifter 700 is disposed on a first feed path between the RF test socket 200 and the first feed point A1, or on a second feed path between the RF test socket 200 and the second feed point A2. Figure 8 This is a schematic diagram of the configuration of a phase shifter 700 according to one embodiment. Figure 8 In the example shown, a capacitor is also provided on the second feed path between the RF test socket and the second feed point A2. Additionally, an inductor may be connected to the first feed path. The phase shifter 700 is used to phase-shift the received RF signal so that the phase of the RF signal arriving at the first feed point A1 and the phase of the RF signal arriving at the second feed point A2 are within the same preset range. It is understood that since the RF signal from the RF test socket needs to be fed synchronously into the first feed point A1 and the second feed point A2, and the lengths of the two feed paths cannot be perfectly equidistant, there will be a certain phase difference between the signals arriving at the first feed point A1 and the second feed point A2, leading to frequency offset and reduced transmission and reception efficiency.

[0045] Specifically, Figure 9 The graph shows the S11 parameters of the first radiator 300 under different phase differences. Figure 10 The efficiency diagrams of the first radiator 300 under different phase differences are shown, in conjunction with reference. Figure 9 and Figure 10Different phase differences will lead to different frequency offsets and efficiency variations. S11, called the input reflection coefficient, refers to the ratio between the incident wave and the reflected wave. S11 reflects how much incident energy is reflected back by the load and is typically used to measure the input matching of antennas, RF devices, etc. That is, the lower the value of S11, the less reflection and the better the input matching. Figure 10 It is known that a phase difference of 315 degrees affects efficiency by approximately 2 dB, while a phase difference of 270 degrees affects efficiency by approximately 1 dB. To address the frequency offset and efficiency issues caused by phase difference, this embodiment introduces... Figure 8 The phase shifter 700 is shown. Specifically, the phase shift angle of the phase shifter 700 is related to the length difference between the two feed paths. Therefore, the corresponding angle can be determined based on the length difference between the two feed paths. Alternatively, the phase difference that has the greatest impact on efficiency can be determined by simulating and testing the S11 parameters or efficiency without the phase shifter 700, and corresponding compensation can be made to reduce the phase difference between the two feed paths, thereby improving the frequency offset and efficiency problems of the first radiator 300. For example, if the frequency offset and efficiency problems are most severe when the phase difference is 315 degrees, the second feed path corresponding to the second feed point A2 can be phase-shifted by 315 degrees using the phase shifter 700.

[0046] Figure 11 The S11 parameters and efficiency of a communication device in free space, as described in one embodiment. Figure 12 The S11 parameters and efficiency of a communication device when held in the right hand, as described in an embodiment, are in conjunction with reference to [reference needed]. Figure 11 and Figure 12 It is evident that by setting two feed paths, the bandwidth of the first radiator 300 can be significantly widened, thereby better covering the low-frequency band. Moreover, by setting a phase shifter 700 on the feed path, the influence of the phase difference between the feed paths on the radiation performance can be further corrected, thus providing a communication device with better communication quality.

[0047] Figure 13 The fourth schematic diagram of the communication device in the embodiment is shown below. Figure 13 In one embodiment, the communication device further includes a mid-frame and a second radiator 900.

[0048] The middle frame can be made of materials such as plastic, glass, ceramic, fiber composite materials, or metal. The middle frame includes a first frame 510 and a second frame 520 connected to each other. For example, the first frame 510 is a long frame, and the second frame 520 is a short frame. A first radiator 300 extends from the first frame 510 to the second frame 520, with a first feed point A1 close to the second frame 520 and a second feed point A2 located within the second frame 520. A second radiator 900 is disposed on the second frame 520, spaced apart from the first radiator 300, and fed with an excitation signal by a third feed point A3. A first tuning module 810 is also connected to the second radiator 900, and the first tuning module 810 is further used to adjust the impedance at the connection point between the first tuning module 810 and the second radiator 900 to change the resonant frequency of the second radiator 900. Specifically, the second radiator 900 can be used to radiate signals in the mid-to-high frequency band, and the first tuning module 810 can tune the mid-to-high frequency band supported by the resonant mode generated by the second radiator 900. Therefore, the first tuning module 810 can effectively balance the performance of the first radiator 300 supporting both the low-frequency band and the mid-to-high frequency band. Furthermore, compared to having a separate tuning module connected to the second radiator 900 for tuning the mid-to-high frequency band separately, this embodiment reduces the number of tuning modules and significantly lowers the cost of the communication equipment.

[0049] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0050] The above embodiments merely illustrate several implementation methods of the embodiments of this application, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the embodiments of this application, and these all fall within the protection scope of the embodiments of this application. Therefore, the protection scope of the patent for the embodiments of this application should be determined by the appended claims.

Claims

1. A communication device, characterized in that, include: Radio frequency (RF) chips are used to generate RF signals; An RF test socket, connected to the RF chip, is used to transmit the RF signal from the RF chip; The first radiator has a first feed point, a second feed point, and a ground point. The ground point is located between the first feed point and the second feed point. The first feed point and the second feed point are respectively connected to the radio frequency test socket. The first radiator has a first end and a second end, and the second feed point is located at the first end.

2. The communication device according to claim 1, characterized in that, It also includes a cable connector, through which the first power supply point is connected to the RF test socket.

3. The communication device according to claim 2, characterized in that, The cable connector is connected to the RF test socket via circuit board traces, and is also connected to the first feed point via circuit board traces. The RF test socket is connected to the second feed point via circuit board traces.

4. The communication device according to claim 3, characterized in that, Also includes: The middle frame includes a first frame, a second frame, and a third frame connected in sequence. The first radiator extends from the first frame to the second frame. The first feed point is located near one end of the first frame, and the second feed point is located near the other end of the first frame. One end of the first frame is connected to the second frame. The battery is located in the space enclosed by the middle frame; The first power supply path between the RF test socket and the first power supply point passes sequentially through the gap between the battery and the third frame and the gap between the battery and the second frame, while the second power supply path between the RF test socket and the second power supply point passes through the gap between the battery and the fourth frame.

5. The communication device according to claim 3, characterized in that, Also includes: A phase shifter is disposed on a first feed path between the RF test socket and the first feed point, or on a second feed path between the RF test socket and the second feed point. The phase shifter is used to shift the phase of the received RF signal so that the phase of the RF signal arriving at the first feed point and the phase of the RF signal arriving at the second feed point are within the same preset range.

6. The communication device according to any one of claims 1 to 5, characterized in that, Also includes: The first tuning module is connected to the second end of the first radiator and is used to adjust the resonant frequency of the first radiator.

7. The communication device according to any one of claims 1 to 5, characterized in that, Also includes: The second tuning module is connected to the second feed point and is used to adjust the impedance at the second feed point.

8. The communication device according to claim 1, characterized in that, The first radiator has a 1 / 4 wavelength resonant mode and operates at the first resonant frequency through adjustment by the first tuning module.

9. The communication device according to claim 8, characterized in that, The first radiator is also used to operate in a 1 / 2 wavelength resonant mode and to operate at a second resonant frequency through adjustment by the first tuning module.

10. The communication device according to claim 1, characterized in that, Also includes: The middle frame includes a first side frame and a second side frame connected to each other. The first radiator extends from the first side frame to the second side frame. The first feed point is close to the second side frame, and the second feed point is located on the second side frame. The second radiator is disposed on the second frame and spaced apart from the first radiator; The first tuning module is also connected to the second radiator, and the first tuning module is also used to adjust the impedance at the connection point between the first tuning module and the second radiator in order to change the resonant frequency of the second radiator.

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