Electronic device

Abstract

The present application discloses an electronic device, comprising: a frame body, a first feed elastic piece, a radio frequency device, and a grounding plate. The electronic device further comprises a first connecting tongue, a second feed elastic piece, a second connecting tongue, and a power distribution device. The frame body comprises a first radiator and a second radiator, a first gap is formed between the first radiator and the second radiator, and a clearance area is formed between the first radiator and the grounding plate and between the second radiator and the grounding plate; the radio frequency device is electrically connected to a first feed point and a second feed point by means of the power distribution device respectively, the first feed point is in coupling connection with the second feed point, the first feed point is electrically connected to the first radiator by means of the first feed elastic piece and the first connecting tongue, and the second feed point is electrically connected to the second radiator by means of the second feed elastic piece and the second connecting tongue.

Description

electronic devices

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to the Chinese patent application filed with the China Patent Office on September 25, 2023, with application number 202311237671.5 and title “Electronic Device”, the entire contents of which are incorporated by reference into this application. Technical Field

[0003] The present application belongs to the field of electronic technology, and specifically relates to an electronic device. Background Art

[0004] With the continuous development of electronic technology, the functions that can be realized in electronic devices are also increasing. Currently, it is usually necessary to increase the size of the antenna of electronic devices to reduce the specific absorption ratio (SAR) of the antenna of electronic devices. However, it is difficult for the antenna of electronic devices to achieve both low SAR value and high efficiency.

[0005] Summary of the Invention

[0006] The present application aims to provide an electronic device that solves the problem that antennas of current electronic devices are difficult to achieve both a low SAR value and a high efficiency.

[0007] In order to solve the above technical problems, this application is implemented as follows:

[0008] An embodiment of the present application provides an electronic device, comprising: a frame, a first feeding spring, a radio frequency device and a ground plane, the electronic device also comprising a first connecting tongue, a second feeding spring, a second connecting tongue and a power distribution device, the frame comprising a first radiator and a second radiator, a first gap being provided between the first radiator and the second radiator, a clearance area being provided between the first radiator, the second radiator and the ground plane, the radio frequency device being electrically connected to a first feeding point and a second feeding point respectively through the power distribution device, the first feeding point and the second feeding point being coupled and connected, the first feeding point being electrically connected to the first radiator through the first feeding spring and the first connecting tongue, and the second feeding point being electrically connected to the second radiator through the second feeding spring and the second connecting tongue.

[0009] In an embodiment of the present application, since the radio frequency signal can be radiated from the first radiator and the second radiator respectively after being distributed by the power distribution device, the energy concentration effect of the electronic device is alleviated, and the SAR value of the antenna of the electronic device is reduced, that is, the antenna of the electronic device has a lower SAR value; at the same time, since the first feeding point and the second feeding point are coupled and connected, that is, there is a coupling effect between the first feeding point and the second feeding point, the first radiator and the second radiator can form an antenna cluster to work together, so that there are coupled waves and echoes on the antenna of the electronic device, and when the coupled waves and the echo produce destructive interference, the impedance matching of the antenna of the electronic device itself can be effectively improved, thereby improving efficiency. Therefore, the embodiment of the present application can improve the Over-The-Air (OTA) performance of the electronic device without changing the transmission power of the radio frequency signal. In this way, the antenna of the electronic device can have both a lower SAR value and a higher efficiency.

[0010] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0012] FIG1 is a schematic structural diagram of an electronic device in a single-feed antenna solution in the related art;

[0013] FIG2 is a schematic diagram of a structure of an electronic device according to an embodiment of the present application;

[0014] 3 is a schematic diagram of reflection parameters of antennas corresponding to a single-feed antenna solution in related art and a dual-feed antenna solution provided in an embodiment of the present application;

[0015] FIG4 is a second structural diagram of an electronic device provided in an embodiment of the present application;

[0016] FIG5 is a third structural diagram of an electronic device provided in an embodiment of the present application;

[0017] FIG6 is one of the AA cross-sectional schematic diagrams in FIG5 provided in an embodiment of the present application;

[0018] FIG7 is a second schematic diagram of the AA cross section in FIG5 provided in an embodiment of the present application;

[0019] FIG8 is a fourth structural diagram of an electronic device provided in an embodiment of the present application;

[0020] FIG9 is a fifth structural diagram of an electronic device provided in an embodiment of the present application;

[0021] FIG10 is a sixth structural diagram of an electronic device provided in an embodiment of the present application;

[0022] FIG11 is a seventh structural diagram of an electronic device provided in an embodiment of the present application;

[0023] FIG12 is an eighth structural diagram of an electronic device provided in an embodiment of the present application;

[0024] FIG13 is a ninth structural diagram of an electronic device provided in an embodiment of the present application;

[0025] FIG14 is a schematic diagram of antenna echoes corresponding to the single-feed antenna solution in the related art and the dual-feed antenna solution provided in an embodiment of the present application;

[0026] FIG15 is a schematic diagram of the total antenna efficiency corresponding to the single-feed antenna solution in the related art and the dual-feed antenna solution provided in an embodiment of the present application. Specific embodiments

[0027] The embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0028] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly refer to one or more of the features. Throughout the description of this application, unless otherwise specified, "plurality" means two or more. Furthermore, "and / or" in the specification and claims refers to at least one of the connected entities, and the character " / " generally indicates an "or" relationship between the connected entities.

[0029] Referring to Figure 2, Figure 2 is a schematic structural diagram of an electronic device provided in an embodiment of the present application. As shown in Figure 2, the electronic device includes: a frame 10, a first feeding spring 20, a radio frequency device 40 and a ground plate 60. The electronic device also includes a first connecting tongue 21, a second feeding spring 30, a second connecting tongue 31 and a power distribution device 50. The frame 10 includes a first radiator 11 and a second radiator 12. A first gap 13 is provided between the first radiator 11 and the second radiator 12. A clearance area 14 is provided between the first radiator 11, the second radiator 12 and the ground plate 60. The radio frequency device 40 is electrically connected to the first feeding point and the second feeding point respectively through the power distribution device 50. The first feeding point and the second feeding point are coupled and connected. The first feeding point is electrically connected to the first radiator 11 through the first feeding spring 20 and the first connecting tongue 21, and the second feeding point is electrically connected to the second radiator 12 through the second feeding spring 30 and the second connecting tongue 31.

[0030] It should be noted that the first radiator 11 can be referred to as a main radiation branch, and the second radiator 12 can be referred to as a parasitic radiation branch.

[0031] It should be noted that the antenna in the embodiment of the present application may include at least one of the first radiator 11 and the second radiator 12, and the first radiator 11 and the second radiator 12 may form an antenna cluster, thereby improving the antenna performance of the electronic device.

[0032] The working principle of the embodiment of the present application can be described as follows:

[0033] Since the radio frequency signal emitted by the radio frequency device 40 is distributed by the power distribution device 50, it can be radiated from the first radiator 11 and the second radiator 12 respectively, thereby alleviating the energy concentration effect of the electronic device and reducing the SAR value of the antenna of the electronic device, that is, the antenna of the electronic device has a lower SAR value; at the same time, since the first feeding point and the second feeding point are coupled and connected, that is, there is a coupling effect between the first feeding point and the second feeding point, the first radiator 11 and the second radiator 12 can form an antenna cluster to work together, so that there is a coupled wave (S 12 ) and echo (S 11 and S 22 ), and when the coupled wave and the echo generate destructive interference, the impedance matching of the electronic device's antenna itself can be effectively improved, thereby improving efficiency. Therefore, the embodiments of the present application can improve the over-the-air (OTA) performance of the electronic device without changing the RF signal transmission power. In this way, the antenna of the electronic device can have a low SAR value and high efficiency at the same time.

[0034] It should be noted that, referring to FIG. 5 , FIG. 8 and FIG. 9 , the portion of the frame 10 where the first radiator 11 and the second radiator 12 are not provided can be connected to the ground plate 60 through the ground connection 81 to enhance the grounding effect of the frame 10 .

[0035] It should be noted that the coupling connection between the first feeding point and the second feeding point can be achieved as follows: As an optional embodiment, the first radiator 11 and the second radiator 12 are coupled via the first gap 13. In this way, the coupling connection between the first feeding point and the second feeding point can be achieved.

[0036] As an optional implementation, referring to FIG. 4 , the amplitudes of the signal distributed by the power distribution device 50 to the first feeding point and the signal distributed to the second feeding point are equal, and the phase difference is zero.

[0037] In the embodiment of the present application, the amplitude of the signal distributed to the first feeding point by the power distribution device 50 and the signal distributed to the second feeding point are equal, and the phase difference is zero. At the same time, the antenna cluster composed of the first radiator 11 and the second radiator 12 can be equivalent to an independent single-port antenna device, which has no impact on the existing RF architecture of the electronic device, that is, the degree of modification to the existing RF architecture of the electronic device is reduced.

[0038] Optionally, referring to FIG4 , the power of the radio frequency signal transmitted from the radio frequency device 40 to the power distribution device 50 is P0, and the power distribution device 50 distributes the radio frequency signal so that the power of the signal distributed to the first feeding point is The power of the signal distributed at the second feeding point is

[0039] It should be noted that the above-mentioned coupling wave S 12 It can refer to the signal that is coupled from the first feeding spring 20 connected to the first radiator 11 to the second radiator 12 and returned from the second radiator 12, and the echo S 11 It can refer to the signal transmitted to the first radiator 11 through the first feeding spring 20 and returned from the first radiator 11, the echo S 22 It may refer to a signal that is transmitted through the second feeding spring 30 to the second radiator 12 and returned from the second radiator 12 .

[0040] In addition, since the electronic device includes the first connecting tongue 21 and the second connecting tongue 31, by selecting first connecting tongues 21 and second connecting tongues 31 of different lengths, the feeding path of the feeding signal on the first radiator 11 and the second radiator 12 can be adjusted. When the first connecting tongue 21 and the second connecting tongue 31 of longer length are selected, the feeding path of the feeding signal on the first radiator 11 and the second radiator 12 can be extended, and at the same time, the performance of the antenna cluster composed of the first radiator 11 and the second radiator 12 can be enhanced.

[0041] See Figure 3, which is a schematic diagram of the reflection parameters (S parameters) of the antenna corresponding to the single-feed antenna scheme and the dual-feed antenna scheme. Referring to Figure 1, the way in which only one of the first radiator 11 and the second radiator 12 is connected to the feed shrapnel can be called a single-feed scheme, and the embodiment of the present application can be called a dual-feed scheme or an antenna cluster scheme. In the single-feed scheme, see the single-feed scheme S 11 Curve D1, the antenna of the electronic device can generate two resonances with different frequencies in the frequency range of 2GHz-6GHz, wherein the resonance frequencies on the first radiator 11 and the second radiator 12 are approximately 2.8GHz and 5.5GHz respectively; in the embodiment of the present application, the echo on the first radiator 11 (dual feeding scheme S 11 Curve D2) can generate two resonances with different frequencies, which are approximately 3 GHz and 5.7 GHz respectively, while the echo located on the second radiator 12 can generate a single resonance in the frequency range of 2 GHz-6 GHz, which is approximately 5.7 GHz. 12 Curve D4 shows that when the dual feeding scheme is adopted, there is a strong coupling effect between the first feeding point connected to the first radiator 11 and the second feeding point connected to the second radiator 12, see Figure 3, which also includes the dual feeding scheme S 22 Curve D3.

[0042] It should be noted that when there is a strong coupling effect between the first feeding point and the second feeding point, part of the RF signal flowing from the first feeding spring 20 to the first radiator 11 is transmitted to the second radiator 12 and flows out from the second feeding spring 30 under the spatial coupling of the electromagnetic field, and is converted into a coupled wave (S 12 ), and the coupled wave (S 12 ) can be combined with the echo (S 22 ) produces destructive interference, thus affecting the echo (S 22) has an impact. Thus, according to the relevant theory of antenna clusters, the coupled waves between the first feeding point and the second feeding point can be utilized, and the power distribution device 50 can be used to distribute the power of the RF signal emitted by the RF device 40 according to specific weight coefficients (amplitude and phase) as needed, thereby forming an antenna cluster with two feeds.

[0043] It should be noted that in the case where only one of the first radiator 11 and the second radiator 12 is connected to the feed spring, that is, in the single feed scheme, in order to improve the performance of the antenna of the electronic device, it is usually necessary to increase the size of the first radiator 11 or the second radiator 12; while in the antenna cluster scheme, the antenna cluster needs to be composed of multiple antenna units with coupling effects. In particular, for highly integrated electronic devices, it is difficult to apply antenna cluster technology without changing the existing antenna layout. In the embodiment of the present application, since the first feed spring 20 is electrically connected to the first radiator 11 through the first connecting tongue 21, and the second feed spring 30 is electrically connected to the second radiator 12 through the second connecting tongue 31, that is, the first radiator 11 and the second radiator 12 are each connected to a feed spring, so that the first radiator 11 and the second radiator 12 form an antenna cluster to improve efficiency, there is no need to change the number and size of the first radiator 11 and the second radiator 12, nor to change the layout of the antenna of the electronic device and to increase the volume of the electronic device.

[0044] 5 , which is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application, and FIG. 6 and FIG. 7 are schematic diagrams of the AA section in FIG. 5 .

[0045] As an optional embodiment, referring to FIG. 6 , a first groove 211 is formed on the surface of the first connecting tongue 21 facing the first radiator 11 , and the first groove 211 is connected to the clearance area 14 .

[0046] Among them, the first radiator 11 can excite two resonances with different frequencies, and the resonance with a higher frequency among the two resonances with different frequencies can be called high-frequency resonance, and the resonance with a lower frequency among the two resonances with different frequencies can be called low-frequency resonance.

[0047] In the embodiment of the present application, by forming a first groove 211 on the surface of the first connecting tongue 21 facing the first radiator 11 and increasing the depth of the first groove 211, the feeding path of the RF signal can be extended, that is, the distance from the feeding spring to the frame 10 is increased, and vice versa.

[0048] It should be noted that, referring to Figures 6 and 7, B1 in Figure 6 and B2 in Figure 7 are used to represent the feeding paths, respectively. According to the comparison of Figures 6 and 7, when other parameters are the same, as shown in Figure 6, a first groove 211 is provided on the surface of the first connecting tongue 21 facing the first radiator 11, the length of the feeding path B1 is greater than the length of the feeding path B2.

[0049] As an optional embodiment, a second groove is formed on the surface of the second connecting tongue 31 facing the second radiator 12 , and the second groove is connected to the clearance area 14 .

[0050] Among them, the echo of the second feeding point located at the second radiator 12 (double feeding S 22 Curve 3) exhibits a single resonance in the frequency range of 2-6 GHz, approximately 5.7 GHz, which can be referred to as a high-frequency resonance.

[0051] In an embodiment of the present application, by opening a second groove on the surface of the second connecting tongue 31 facing the second radiator 12 and by selecting the depth of the second groove, the feeding path corresponding to the RF signal on the second feeding spring 30 can be adjusted. When a deeper second groove is selected to increase the feeding path, the performance of the antenna cluster composed of the second radiator 12 and the first radiator 11 can be improved.

[0052] It should be noted that when there is a phase difference between the RF signals distributed by the power distribution device 50 at the first feeding point and the second feeding point, the performance of the antenna cluster composed of the second radiator 12 and the first radiator 11 can be improved. However, since the wavelength of the RF signal is inversely proportional to its frequency, and the second feeding point connected to the second radiator 12 can excite a higher-frequency resonance, the embodiment of the present application can improve the antenna performance obtained at a higher resonant frequency when forming an antenna cluster without substantially affecting the phase difference at a lower resonant frequency.

[0053] As an optional implementation, the clearance area 14 is filled with a medium.

[0054] The ground plate 60 can be referred to as the main ground, and the clearance area 14 can be understood as a slot opened on the ground plate 60 , and thus the clearance area 14 can also be referred to as a main ground slot.

[0055] In the embodiment of the present application, the feeding path can be further extended by filling the clearance area 14 with a medium.

[0056] Optionally, when the dielectric constant of the medium is 4 and the resonant frequency of the antenna cluster is 5.5 GHz, the feeding path can be extended by a maximum of about λ / 10, where λ is the wavelength of the electromagnetic wave of the corresponding frequency in the material corresponding to the medium.

[0057] As an optional embodiment, referring to Figures 8 and 9, the first connection point 212 between the first connecting tongue 21 and the first radiator 11 is located between the two ends of the first radiator 11, and the second connection point between the second connecting tongue 31 and the second radiator 12 is located between the two ends of the second radiator 12.

[0058] In the embodiment of the present application, by adjusting the positions of the first connection point 212 and the second connection point, that is, the first connection point 212 is located between the two ends of the first radiator 11, and the second connection point is located between the two ends of the second radiator 12, the echoes on the first radiator 11 and the second radiator 12 can be optimized, so that the performance of the antenna cluster composed of the first radiator 11 and the second radiator 12 is better.

[0059] Optionally, by adjusting the positions of the first connection point 212 and the second connection point, when the echoes (S 11 and S 22 ) When the corresponding resonant frequency is better than -5dB, the performance of the antenna cluster composed of the first radiator 11 and the second radiator 12 can be better.

[0060] As an optional implementation, referring to FIG. 9 , the first connection point 212 is located in the middle of the first radiator 11 , and the second connection point is located in the middle of the second radiator 12 .

[0061] In the embodiment of the present application, the first connection point 212 is located in the middle of the first radiator 11, and the second connection point is located in the middle of the second radiator 12, so that the antenna cluster composed of the first radiator 11 and the second radiator 12 can have better performance.

[0062] It should be noted that the specific positions of the first connection point 212 and the second connection point are not limited here. Optionally, the first connection point 212 can also be located between the middle position of the first radiator 11 and the end of the first radiator 11 facing the second radiator 12, and the second connection point can also be located between the middle position of the second radiator 12 and the end of the second radiator 12 facing the first radiator 11.

[0063] As an optional embodiment, referring to Figure 9, the first connecting tongue 21 is tilted relative to the first radiator 11, and a first angle is formed between the first connecting tongue 21 and the first radiator 11, and the second connecting tongue 31 is tilted relative to the second radiator 12, and a second angle is formed between the second connecting tongue 31 and the second radiator 12.

[0064] The first angle and the second angle can both be acute angles, and when the first angle and the second angle are smaller, the inclination of the first connecting tongue 21 relative to the first radiator 11 is greater, the inclination of the second connecting tongue 31 relative to the second radiator 12 is greater, and the lengths of the first connecting tongue 21 and the second connecting tongue 31 are longer.

[0065] In an embodiment of the present application, when the positions of the first connection point 212 and the second connection point are fixed, the first connection tongue 21 can be tilted relative to the first radiator 11, and the second connection tongue 31 can be tilted relative to the second radiator 12. In this way, the position of the first connection point between the first connection tongue 21 and the first radiator 11 is changed, and the position of the second connection point between the second connection tongue 31 and the second radiator 12 is changed, thereby optimizing the echo at the first feeding spring 20 and the second feeding spring 30.

[0066] In addition, optionally, the distance between the first feeding spring 20 and the second feeding spring 30 can be reduced, thereby shortening the length of the RF transmission line required from the power distribution device 50 to the first feeding spring 20 and the second feeding spring 30, thereby reducing the path loss. It is also possible to improve the coupling strength (S) between the first feeding point and the second feeding point. 12 ), at the same time, the phase difference between the first feeding point and the second feeding point can be adjusted through the first groove 211 and the second groove, thereby enhancing the destructive interference effect generated by the coupled wave and the echo of the antenna of the electronic device, thereby improving the performance of the antenna cluster.

[0067] As an optional implementation, referring to FIG. 4 , the electronic device further includes an impedance matching circuit 70 , and the RF device 40 is electrically connected to the power distribution device 50 via the impedance matching circuit 70 .

[0068] In the embodiment of the present application, by providing an impedance matching circuit 70, the impedance matching of the antenna of the electronic device itself can be further adjusted, which can be used to improve the impedance matching degree of the antenna in its own resonant frequency band, and can also be used to adjust the frequency corresponding to when the antenna obtains better impedance matching, thereby obtaining better antenna performance in multiple required frequency bands.

[0069] It should be noted that because the first radiator 11 and the second radiator 12 can simultaneously excite higher-frequency resonances and there is a strong coupling effect between the two feeds, unlike single-feed antenna solutions and common antenna cluster solutions, if the high-frequency single resonance of the second radiator 12 is strong, that is, its antenna radiation efficiency is high, the high-frequency resonance that can be excited by the first radiator 11 will be correspondingly weakened. In this case, if the first radiator 11 and the second radiator 12 form an antenna cluster according to a fixed power distribution method, the antenna radiation efficiency obtained at the higher resonant frequency will be reduced.

[0070] As an optional embodiment, referring to Figures 10, 11 and 12, there is a second gap 80 between the second connecting tongue 31 and the ground plate 60. Referring to Figures 11, 12 and 13, at least a portion of the second gap 80 is filled with a return ground structure 82, and the return ground structure 82 is connected to the second radiator 12, and the second feeding spring 30 is connected to the ground plate 60 through the return ground structure 82.

[0071] The ground return structure 82 may be referred to as a continuous material ground return.

[0072] In the embodiment of the present application, by filling the return ground structure 82 in at least a part of the second gap 80, the area of ​​the clearance area 14 can be reduced, thereby shortening the path of the RF signal from the second feeding spring 30 through the return ground structure 82 back to the ground (i.e., back to the ground plate 60), thereby appropriately weakening the high-frequency single resonance intensity of the second radiator 12, and effectively regulating the antenna radiation efficiency corresponding to the high-frequency resonance point of the first radiator 11 and the second radiator 12.

[0073] It should be noted that, referring to Figures 10, 11, 12 and 13, C1 in Figure 10, C2 in Figure 11, C3 in Figure 12 and C4 in Figure 13 are all used to represent the return path. It can be seen that when the area of ​​the return structure 82 filled in the second gap 80 is larger, the return path is shorter.

[0074] Optionally, when the antenna radiation efficiency corresponding to the high-frequency resonance point of the first radiator 11 and the second radiator 12 is controlled within 1.5dB, the implementation of the present application can improve the performance of the antenna cluster and reduce the processing difficulty and cost of the clearance area 14.

[0075] The echo (S) of the antenna itself corresponding to the antenna cluster composed of the first radiator 11 and the second radiator 12 in the single feeding scheme and the embodiment of the present application 11 ) as shown in Figure 14. In the embodiment of the present application, the antenna of the electronic device can generate two resonances with different frequencies in the frequency range of 2GHz-6GHz. The resonant frequencies are similar to those of the single-feed solution. However, the impedance matching of the antenna corresponding to the embodiment of the present application is better near 2.8GHz. At around 5.5GHz, not only is the impedance matching better, but the bandwidth is also wider.

[0076] The total antenna efficiency corresponding to the single feed solution and the antenna cluster solution is shown in Figure 15. Since the antenna of the electronic device can generate two resonances with different frequencies in the frequency range of 2GHz-6GHz, the embodiment of the present application can adjust the operating frequency of the antenna of the electronic device by using a corresponding impedance matching network, so that it can operate in the three frequency bands of WiFi-2.4G (2.4GHz-2.5GHz), N78 (3.3GHz-3.8GHz), and WiFi-5G (5.15GHz-5.85GHz), and simultaneously obtain better antenna performance.

[0077] The average values ​​of the total antenna efficiency for the single-feed solution and the antenna cluster solution within the three operating frequency bands are shown in Table 1. Without changing the existing antenna layout and RF architecture of the electronic device, in the embodiment of the present application, when the power distribution device 50, the first feed spring 20, and the second feed spring 30 are included, the average total efficiency of the electronic device in the embodiment of the present application is slightly reduced within the WiFi-2.4G frequency band, the average total efficiency within the WiFi-5G frequency band is basically the same, and the average total efficiency within the N78 frequency band is improved by 1.7dB.

[0078] Table 1

[0079] Table 2 shows the corresponding total antenna efficiency and normalized body SAR (Body SAR) values ​​at 5 mm from the side of the electronic device for the single-feed and antenna cluster solutions at an operating frequency of 3.55 GHz. Compared to the single-feed solution, the antenna cluster solution improves total antenna efficiency by 2.1 dB while reducing the normalized body SAR by approximately 25%.

[0080] Table 2

[0081] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0082] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. An electronic device, comprising: A frame, a first feeding spring, a radio frequency device and a ground plane, the electronic device also includes a first connecting tongue, a second feeding spring, a second connecting tongue and a power distribution device, the frame includes a first radiator and a second radiator, a first gap is set between the first radiator and the second radiator, and there is a clearance area between the first radiator, the second radiator and the ground plane, the radio frequency device is electrically connected to the first feeding point and the second feeding point respectively through the power distribution device, the first feeding point and the second feeding point are coupled and connected, the first feeding point is electrically connected to the first radiator through the first feeding spring and the first connecting tongue, and the second feeding point is electrically connected to the second radiator through the second feeding spring and the second connecting tongue.

2. The electronic device according to claim 1, wherein: A first groove is formed on a surface of the first connecting tongue facing the first radiator, and the first groove is communicated with the clearance area.

3. The electronic device according to claim 1, wherein: A second groove is formed on the surface of the second connecting tongue facing the second radiator, and the second groove is communicated with the clearance area.

4. The electronic device according to claim 1, wherein: The clearance area is filled with a medium.

5. The electronic device according to claim 1, wherein: A first connection point between the first connection tongue and the first radiator is located between two ends of the first radiator, and a second connection point between the second connection tongue and the second radiator is located between two ends of the second radiator.

6. The electronic device according to claim 5, wherein: The first connection point is located at a middle position of the first radiator, and the second connection point is located at a middle position of the second radiator.

7. The electronic device according to claim 5, wherein: The first connecting tongue is tilted relative to the first radiator, and a first angle is formed between the first connecting tongue and the first radiator. The second connecting tongue is tilted relative to the second radiator, and a second angle is formed between the second connecting tongue and the second radiator.

8. The electronic device according to any one of claims 1 to 7, wherein: The amplitude of the signal distributed by the power distribution device to the first feeding point and the amplitude of the signal distributed to the second feeding point are equal, and the phase difference is zero.

9. The electronic device according to claim 8, wherein: The electronic device further includes an impedance matching circuit, and the radio frequency device is electrically connected to the power distribution device via the impedance matching circuit.

10. The electronic device according to claim 9, wherein: A second gap is provided between the second connecting tongue and the grounding plate, at least a portion of the second gap is filled with a ground return structure, and the ground return structure is connected to the second radiator, and the second feeding spring is connected to the grounding plate through the ground return structure.

11. The electronic device according to any one of claims 1 to 7, wherein: The first radiator and the second radiator are coupled and connected via the first gap.

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