Electronic device

Abstract

The invention relates to an electronic device. The electronic equipment comprises a first antenna, a second antenna and a floor, the first antenna comprises a first radiator and a first feed source electrically connected with a feed point of the first radiator, and the second antenna comprises a second radiator and a second feed source electrically connected with a feed point of the second radiator. The first radiator and the second radiator are electrically connected with the floor; wherein the difference between the odd-mode impedance and the even-mode impedance of the two-port network formed by the first antenna and the second antenna is smaller than or equal to a first preset difference threshold, so that the first antenna and the second antenna are decoupled. By adopting the electronic equipment, the isolation between the antennas in the electronic equipment can be improved.

Description

Technical Field

[0001] The present application relates to the field of wireless communication technology, and in particular to an electronic device. Background Art

[0002] With the development of wireless communication technology, the number of antennas in electronic devices continues to increase. Placing a large number of antennas in the limited space of electronic devices inevitably leads to the problem that antennas with similar frequency bands cannot be placed apart, which leads to mutual coupling between antennas with similar frequency bands, making the isolation between antennas smaller and affecting antenna performance. Therefore, the problem of how to improve the isolation between antennas in electronic devices needs to be solved urgently. Summary of the invention

[0003] Based on this, it is necessary to provide an electronic device capable of improving the isolation between antennas in the electronic device in order to solve the above technical problems.

[0004] The present application provides an electronic device. The electronic device includes a first antenna, a second antenna, and a floor, wherein the first antenna includes a first radiator and a first feed source electrically connected to a feeding point of the first radiator, the second antenna includes a second radiator and a second feed source electrically connected to a feeding point of the second radiator, and the first radiator and the second radiator are both electrically connected to the floor; wherein the difference between the odd-mode impedance and the even-mode impedance of a two-port network formed by the first antenna and the second antenna is less than or equal to a first preset difference threshold, so that the first antenna and the second antenna are decoupled.

[0005] The above-mentioned electronic device includes a first antenna, a second antenna and a floor, wherein the first antenna includes a first radiator and a first feed source electrically connected to a feeding point of the first radiator, the second antenna includes a second radiator and a second feed source electrically connected to a feeding point of the second radiator, and the first radiator and the second radiator are both electrically connected to the floor; wherein the difference between the odd-mode impedance and the even-mode impedance of the two-port network formed by the first antenna and the second antenna is less than or equal to a first preset difference threshold, so that the first antenna and the second antenna are decoupled. In this way, when the first feed source excites the first antenna and / or the second feed source excites the second antenna, the first antenna and the second antenna are decoupled, and the two work independently with little mutual influence, thereby improving the isolation between the first antenna and the second antenna, ensuring the transceiver performance of the first antenna and the second antenna, and ensuring the communication performance of the electronic device. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0007] Figure 1 is a schematic diagram of the structure of an electronic device in one embodiment;

[0008] Figure 2 is a schematic diagram of a two-port network in one embodiment;

[0009] Figure 3 is a schematic structural diagram of another electronic device in one embodiment;

[0010] Figure 4 is a schematic structural diagram of another electronic device in one embodiment;

[0011] Figure 5 A schematic diagram of antenna arrangement positions in one embodiment;

[0012] Figure 6 A schematic diagram of another antenna arrangement position in an embodiment;

[0013] Figure 7 A schematic diagram of return loss comparison in one embodiment;

[0014] Figure 8 A schematic diagram of impedance resonance frequency comparison in one embodiment;

[0015] Fig. 9 A schematic diagram of current flow in one embodiment;

[0016] Fig.10 Another current flow diagram in one embodiment;

[0017] Fig.11 Another current flow diagram in one embodiment;

[0018] Fig.12 Another impedance resonance frequency comparison schematic diagram in one embodiment;

[0019] Fig.13 Another return loss comparison diagram in an embodiment is shown. DETAILED DESCRIPTION

[0020] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. It should be understood that many specific details are set forth in the following description to facilitate a full understanding of the present application, but the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0022] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0023] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0024] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0025] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0026] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0027] With the development of wireless communication technology, the number of antennas used in electronic devices, such as 5G (5th Generation Mobile Networks) terminals and 6G (6th Generation Mobile Networks) terminals, is increasing. For example, about 10-12 antennas are required. When so many antennas are placed in a limited space, antennas with similar frequency bands are mutually coupled, and there is electromagnetic coupling, which makes the isolation between the two low, greatly affecting the radiation efficiency of the antenna, and then affecting the performance of each antenna. For example, when feeding antenna 1 of two adjacent antennas, a strong current will be generated on antenna 2, resulting in poor isolation between the ports of antenna 1 and antenna 2, deteriorating the antenna radiation performance. To address this problem, two antennas with the same frequency or close frequency bands are often placed in isolation in the terminal. However, this method will inevitably lead to situations in which the antennas cannot be placed apart or completely separated in terms of architecture.

[0028] At present, the commonly used decoupling methods mainly include defective ground decoupling method (DGS), band stop filter decoupling method, electromagnetic band gap structure decoupling method (EBG), metamaterial decoupling method (MDT), and neutral line decoupling method. Among them, defective ground decoupling method, electromagnetic band gap structure decoupling method, band stop filter decoupling method, and metamaterial decoupling method often require the design of larger size structures between antenna units, and the terminal space is limited, so it is difficult to apply to the terminal. The neutral line decoupling method can be used in terminal antennas, but it is not universal. When it is used in the terminal, while suppressing the mutual coupling between antennas, it also deteriorates the matching performance of the antenna.

[0029] In view of this, an embodiment of the present application provides an electronic device in which antennas can be decoupled from each other without affecting other performances of the antennas, with high isolation and good antenna performance.

[0030] It should be noted that the electronic devices in the embodiments of the present application may be, but are not limited to, various personal computers, laptops, smart phones, tablet computers, Internet of Things devices and portable wearable devices. The Internet of Things devices may be smart speakers, smart TVs, smart air conditioners, smart car-mounted devices, etc. Portable wearable devices may be smart watches, smart bracelets, head-mounted devices, etc. The "electronic device" (also referred to as a "terminal" or "mobile terminal" or "electronic device") includes a device for receiving / sending communication signals. It may also be referred to as a "wireless communication terminal", "wireless terminal" or "mobile terminal". Examples of mobile terminals include, but are not limited to, satellite or cellular phones; personal communication system (PCS) terminals that can combine cellular radio phones with data processing, fax and data communication capabilities; PDAs that may include radio phones, pagers, Internet / intranet access, Web browsers, notepads, calendars and / or global positioning system (GPS) receivers; and conventional laptop and / or palmtop receivers or other electronic devices including radiotelephone transceivers.

[0031] Please refer to Figure 1 , which shows a schematic diagram of the structure of an electronic device provided in an embodiment of the present application. The electronic device includes a first antenna 101, a second antenna 102 and a floor 103. Among them, the first antenna 101 includes a first radiator 1011 and a first feed source 1012 electrically connected to the feeding point of the first radiator 1011, the second antenna 102 includes a second radiator 1021 and a second feed source 1022 electrically connected to the feeding point of the second radiator 1021, and the first radiator 1011 and the second radiator 1021 are both electrically connected to the floor 103. The difference between the odd-mode impedance and the even-mode impedance of the two-port network formed by the first antenna 101 and the second antenna 102 is less than or equal to the first preset difference threshold value, so that the first antenna 101 and the second antenna 102 are decoupled.

[0032] The first antenna 101 and the second antenna 102 may form a two-port network. In the embodiment of the present application, for the two-port network, the odd-even mode decoupling theory is used as the basis to achieve decoupling of the two ports. The odd-even mode decoupling theory is first described below.

[0033] like Figure 2 The two-port network shown in the figure can be deduced from the formula that when the current I1 of one port is not zero and the current I2 of the other port is zero, the even-mode admittance Y of the two-port network is 0e and odd mode admittance Y 0o Equal. Converting the admittance into impedance, we have the even-mode impedance Z of the two-port network 0e and odd-mode impedance Z 0oWhen the even-mode impedance of a two-port network is equal to the odd-mode impedance, it means that the odd-mode impedance and the even-mode impedance of the two-port network have the same resonant frequency, amplitude and phase. Therefore, the odd-even mode decoupling theory can be known: if the odd-mode impedance of a two-port network is equal to the even-mode impedance, when one port is excited, there is no current on the other port, and port decoupling is achieved. Then it can be understood that when the odd-mode impedance and the even-mode impedance of a two-port network are basically close, the two ports are basically decoupled.

[0034] Based on this, in the embodiment of the present application, for the first antenna 101 and the second antenna 102 that need to be compactly placed in the electronic device, the difference between the odd-mode impedance and the even-mode impedance of the two-port network formed by the first antenna 101 and the second antenna 102 is designed to be less than or equal to the first preset difference threshold. Wherein, the first preset difference threshold can be zero or a value close to zero, that is, the difference between the odd-mode impedance and the even-mode impedance is zero or close to zero, so that the first antenna 101 and the second antenna 102 are decoupled, so that when the first feed source 1012 excites the first antenna 101, no current or a very small current is generated at the port of the second antenna 102; when the second feed source 1022 excites the second antenna 102, no current or a very small current is generated at the port of the first antenna 101, the isolation between the first antenna 101 and the second antenna 102 is improved, the radiation efficiency of the first antenna 101 and the second antenna 102 is improved, and the transceiver performance of the first antenna 101 and the second antenna 102 is ensured.

[0035] Optionally, the interval between the first antenna 101 and the second antenna 102 may be smaller than a preset interval threshold, so that the two may be arranged compactly, saving hardware space of the electronic device.

[0036] Optionally, the operating frequency bands of the first antenna 101 and the second antenna 102 are similar, for example, the difference between the center frequency of the first antenna 101 and the center frequency of the second antenna 102 is less than a preset frequency band threshold; or, the operating frequency bands of the first antenna 101 and the second antenna 102 may be in the same frequency band range.

[0037] The above-mentioned electronic device includes a first antenna 101, a second antenna 102 and a floor 103, wherein the first antenna 101 includes a first radiator 1011 and a first feed source 1012 electrically connected to a feeding point of the first radiator 1011, the second antenna 102 includes a second radiator 1021 and a second feed source 1022 electrically connected to a feeding point of the second radiator 1021, and the first radiator 1011 and the second radiator 1021 are both electrically connected to the floor 103; wherein the difference between the odd-mode impedance and the even-mode impedance of the two-port network formed by the first antenna 101 and the second antenna 102 is less than or equal to a first preset difference threshold value, so that the first antenna 101 and the second antenna 102 are decoupled. In this way, when the first feed source 1012 excites the first antenna 101 and / or the second feed source 1022 excites the second antenna 102, the first antenna 101 and the second antenna 102 are decoupled, and the two work independently with little influence on each other, thereby improving the isolation between the first antenna 101 and the second antenna 102, ensuring the receiving and transmitting performance of the first antenna 101 and the second antenna 102, and ensuring the communication performance of the electronic device.

[0038] In one implementation, the decoupling of the first antenna 101 and the second antenna 102 may be achieved by providing a gap in the floor 103 .

[0039] Please refer to Figure 3 , which shows a schematic diagram of the structure of another electronic device provided in an embodiment of the present application. A gap 103a is provided on the floor 103 of the electronic device so that the difference between the odd-mode impedance and the even-mode impedance of the two-port network formed by the first antenna 101 and the second antenna 102 is less than or equal to a first preset difference threshold.

[0040] The length and width of the slot 103a can be determined in advance through simulation experiments. For example, in a simulation environment, the length and width of the slot 103a are continuously adjusted until the difference between the odd-mode impedance and the even-mode impedance of the two-port network formed by the first antenna 101 and the second antenna 102 is less than or equal to a first preset difference threshold (for example, the difference between the odd-mode impedance and the even-mode impedance is zero), and the shape of the slot 103a is determined according to the target length and target width determined at this time, so as to etch the slot in the floor 103.

[0041] In an optional embodiment, the gap 103a may be as follows: Figure 3 T shape shown.

[0042] In an optional embodiment, the gap 103a may be as follows Figure 3 As shown, the opening is located in the area of ​​the floor 103 between the first radiator 1011 and the second radiator 1021 .

[0043] In the embodiment of the present application, by etching the slot 103a of a preset shape, the odd-mode impedance and the even-mode impedance of the two-port network of the first antenna 101 and the second antenna 102 are substantially equal, and accordingly, the resonant frequencies of the odd-mode impedance and the even-mode impedance are substantially equal, so that the first antenna 101 and the second antenna 102 can have a better decoupling effect, thereby improving the isolation between the two ports. This method is easy to implement, has a simple structure, excellent performance, low cost and good effect. Among them, by designing the slot 103a into a T shape, the space occupied by the floor 103 can be effectively saved.

[0044] In one embodiment, the first antenna 101 and the second antenna 102 may be coupled feed antennas, wherein the first antenna 101 and the second antenna 102 may each include two radiating branches, one of which is coupled with the other when excited by a feed source, so that the two radiating branches work together to transmit and receive signals.

[0045] Please refer to Figure 4 , which shows a schematic diagram of the structure of another electronic device provided by an embodiment of the present application. The first radiator 1011 includes a first main radiation branch 1011a and a first coupling feeding branch 1011b arranged at intervals, the feeding point of the first coupling feeding branch 1011b is electrically connected to the first feed source 1012, and the first main radiation branch 1011a is electrically connected to the floor 103;

[0046] The second radiator 1021 includes a second main radiation branch 1021 a and a second coupling feeding branch 1021 b which are arranged at intervals. The feeding point of the second coupling feeding branch 1021 b is electrically connected to the second feed source 1022 , and the second main radiation branch 1021 a is electrically connected to the floor 103 .

[0047] Optionally, the interval between the first main radiation branch 1011a and the first coupling feed branch 1011b and the interval between the second main radiation branch 1021a and the second coupling feed branch 1021b may be smaller than the target interval threshold, so that the two are close to each other and achieve excellent coupling effect.

[0048] In the embodiment of the present application, the difference between the odd-mode impedance and the even-mode impedance of the two-port network formed by the first antenna 101 and the second antenna 102 can be reduced to within the first preset difference threshold by providing the gap 103a, so that the odd-mode impedance and the even-mode impedance are substantially equal. On this basis, considering the influence of actual hardware factors, in order to further reduce the difference between the odd-mode impedance and the even-mode impedance, the decoupling effect is better, which can be achieved by designing the size of the radiator of the coupled feed antenna.

[0049] In one embodiment, the size of the first coupling feed branch node 1011b is a first target size, and the size of the second coupling feed branch node 1021b is a second target size, so that the difference between the odd-mode impedance and the even-mode impedance of the two-port network formed by the first antenna 101 and the second antenna 102 is less than or equal to a second preset difference threshold; wherein the second preset difference threshold is less than or equal to the first preset difference threshold.

[0050] Among them, the size of the first coupling feed branch node 1011b and the size of the second coupling feed branch node 1021b can be determined in advance through simulation experiments. For example, in a simulation environment, the length and width of each part of the first coupling feed branch node 1011b and the second coupling feed branch node 1021b are continuously adjusted, and the values ​​of odd-mode impedance and ohmic mode impedance are also continuously changed. When the difference between the odd-mode impedance and the even-mode impedance of the two-port network formed by the first antenna 101 and the second antenna 102 is less than or equal to the second preset difference threshold, the first coupling feed branch node 1011b and the second coupling feed branch node 1021b can be designed according to the target size of each part of the first coupling feed branch node 1011b and the second coupling feed branch node 1021b determined at this time.

[0051] Optionally, the first target size and the second target size may be the same.

[0052] In this way, the designed first coupling feed branch 1011b of the first target size is applied to the first antenna 101, and the second coupling feed branch 1021b of the second target size is applied to the second antenna 102, so that the difference between the odd-mode impedance and the even-mode impedance of the two-port network formed by the first antenna 101 and the second antenna 102 is less than or equal to the second preset difference threshold, thereby achieving decoupling of the first antenna 101 and the second antenna 102, further improving the port isolation between the first antenna 101 and the second antenna 102, and ensuring the antenna radiation efficiency.

[0053] In one embodiment, Figure 4 As shown, the first antenna 101 and the second antenna 102 may be symmetrically arranged. Optionally, the symmetrical arrangement may be an axisymmetric arrangement, thereby further ensuring the transceiver performance of the first antenna 101 and the second antenna 102.

[0054] In one embodiment, the first antenna 101 and the second antenna 102 are inverted-F antennas.

[0055] Optional, such as Figure 4As shown, the first main radiation branch 1011a and the first coupling feed branch 1011b in the first antenna 101 and the second main radiation branch 1021a and the second coupling feed branch 1021b in the second antenna 102 can all be inverted-F antennas. In this way, by using inverted-F antennas as the first antenna 101 and the second antenna 102, the space occupied by the first antenna 101 and the second antenna 102 in the electronic device can be saved.

[0056] In one embodiment, the first antenna 101 and the second antenna 102 may be patch antennas.

[0057] In one embodiment, the first antenna 101 and the second antenna 102 are disposed in a corner area or an edge area of ​​the floor 103 .

[0058] Optionally, the first antenna 101 and the second antenna 102 may be disposed in a corner area of ​​the floor 103, for example, the first antenna 101 and the second antenna 102 may be disposed in an upper left corner area, an upper right corner area, a lower left corner area or a lower right corner area of ​​the floor 103. Figure 5 As shown, it shows a schematic diagram of antenna setting position provided in an embodiment of the present application, Figure 5 The first antenna 101 and the second antenna 102 are disposed in a corner area of ​​a floor 103 , and a T-shaped gap 103 a is provided between the first antenna 101 and the second antenna 102 .

[0059] Optionally, the first antenna 101 and the second antenna 102 may be disposed at the edge area of ​​the floor 103. For example, the first antenna 101 and the second antenna 102 may be disposed at any position of the four edges of the floor 103, as long as the communication requirements of the electronic device are met. Figure 6 As shown, it shows another schematic diagram of antenna arrangement position provided in an embodiment of the present application, Figure 6 The first antenna 101 and the second antenna 102 are arranged on the left edge of the floor 103, and a T-shaped slot 103a is provided between the first antenna 101 and the second antenna 102. It is understandable that the slot 103a may be in other shapes as long as the difference between the odd-mode impedance and the even-mode impedance of the two-port network formed by the first antenna 101 and the second antenna 102 is less than the first preset difference threshold.

[0060] Optionally, the electronic device may include multiple groups of first antennas 101 and second antennas 102 , and a T-shaped gap 103 a may be opened between each of the first antennas 101 and the second antennas 102 .

[0061] In one embodiment, the operating frequency bands of the first antenna 101 and the second antenna 102 include an intermediate frequency band and / or a 2.4G band. That is, the first antenna 101 and the second antenna 102 can both operate in the intermediate frequency band or the 2.4G band. Alternatively, both can operate in the intermediate frequency band and the 2.4G band at the same time. The 2.4G band can refer to the WIFI 2.4G band.

[0062] It should be noted that the operating frequency bands of the first antenna 101 and the second antenna 102 may also be other frequency bands, which are not fully illustrated here.

[0063] Optionally, the electronic device provided in the embodiment of the present application can realize the decoupling of the first antenna 101 and the second antenna 102 based on the design of the present application, and can also be combined with other decoupling methods mentioned above to realize a more complex decoupling array and further improve the decoupling performance.

[0064] The data of the simulation experiment are given below to demonstrate the antenna decoupling effect achieved by the electronic device provided in the embodiment of the present application.

[0065] First, if Figure 7 The return losses S1,1 and S2,1 of an antenna array including two antennas in the prior art are shown. It can be seen that the port isolation of the two antennas in the resonant frequency band is relatively poor, about -10 dB. Figure 8 A schematic diagram comparing the resonant frequencies of odd-mode impedance and even-mode impedance of an antenna array comprising two antennas in the prior art is shown. It can be seen that the resonant frequencies and amplitudes of the odd-mode impedance and even-mode impedance of the antenna array are quite different, which is manifested as poor isolation between the two antenna ports in the antenna array.

[0066] Based on the odd-even mode decoupling theory, for the two antennas on the left and right sides, such as Fig. 9 It shows that the currents of the two antennas are in the same direction when odd-mode feeding is used. Fig.10 It shows that the currents of the two antennas are opposite when the even mode is fed, so we can get Fig.11 The conclusion shown is that the odd and even mode currents of the antenna on the left cancel each other out in opposite directions, while the odd and even mode currents of the antenna on the right are superimposed in the same direction. This shows that when one antenna port is fed, the other antenna port has no current, thereby achieving decoupling of the two antennas.

[0067] Based on this, Fig.12 As shown, a schematic diagram comparing the resonant frequencies of odd-mode impedance and even-mode impedance of a two-port network formed by the first antenna and the second antenna designed in the electronic device of an embodiment of the present application is given. It can be seen that the resonant frequencies of the odd-mode impedance and the even-mode impedance almost coincide, and the amplitudes are not much different. Fig.13A schematic diagram comparing the return losses of the two antennas is given accordingly. It can be seen that S2,1 is reduced from the initial -10dB to -19dB, and the antenna performance is improved.

[0068] In one embodiment, an electronic device is provided, which may be a terminal. The internal structure of the electronic device may include a processor, a memory, an input / output interface, a communication interface, a display unit and an input device. The processor, the memory and the input / output interface are connected via a system bus, and the communication interface, the display unit and the input device are connected to the system bus via the input / output interface. The processor of the electronic device is used to provide computing and control capabilities. The memory of the electronic device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The input / output interface of the electronic device is used to exchange information between the processor and an external device. The communication interface of the electronic device is used to communicate with an external terminal in a wired or wireless manner, and the wireless manner can be implemented through WIFI, a mobile cellular network, NFC (near field communication) or other technologies. The display unit of the electronic device is used to form a visually visible picture, which may be a display screen, a projection device or a virtual reality imaging device. The display screen may be a liquid crystal display screen or an electronic ink display screen, and the input device of the electronic device may be a touch layer covered on the display screen, or a key, trackball or touchpad provided on the housing of the electronic device, or an external keyboard, touchpad or mouse, etc. The electronic device may include the first antenna and the second antenna as mentioned above, and the difference between the odd-mode impedance and the even-mode impedance of the two-port network formed by the first antenna and the second antenna is less than or equal to a first preset difference threshold value, so that the first antenna and the second antenna are decoupled.

[0069] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, 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.

[0070] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. An electronic device, characterized in that: The electronic device comprises a first antenna, a second antenna and a floor, wherein the first antenna comprises a first radiator and a first feed source electrically connected to a feeding point of the first radiator, the second antenna comprises a second radiator and a second feed source electrically connected to a feeding point of the second radiator, and the first radiator and the second radiator are both electrically connected to the floor; A difference between an odd-mode impedance and an even-mode impedance of a two-port network formed by the first antenna and the second antenna is less than or equal to a first preset difference threshold, so that the first antenna and the second antenna are decoupled.

2. The electronic device according to claim 1, characterized in that: The floor is provided with a gap so that the difference between the odd-mode impedance and the even-mode impedance of the two-port network formed by the first antenna and the second antenna is less than or equal to a first preset difference threshold.

3. The electronic device according to claim 2, characterized in that: The gap is opened in a region of the floor between the first radiator and the second radiator.

4. The electronic device according to claim 2, characterized in that: The gap is T-shaped.

5. The electronic device according to claim 2, characterized in that: The first antenna and the second antenna are coupled feed antennas.

6. The electronic device according to claim 5, characterized in that: The first radiator comprises a first main radiating branch and a first coupling feeding branch which are arranged at intervals, a feeding point of the first coupling feeding branch is electrically connected to the first feeding source, and the first main radiating branch is electrically connected to the floor; The second radiator includes a second main radiation branch and a second coupling feeding branch which are arranged at intervals. A feeding point of the second coupling feeding branch is electrically connected to the second feed source, and the second main radiation branch is electrically connected to the floor.

7. The electronic device according to claim 6, characterized in that: The size of the first feed coupling branch is a first target size, and the size of the second feed coupling branch is a second target size, so that the difference between the odd-mode impedance and the even-mode impedance of the two-port network formed by the first antenna and the second antenna is less than or equal to a second preset difference threshold; wherein the second preset difference threshold is less than the first preset difference threshold.

8. The electronic device according to any one of claims 1 to 7, characterized in that: The first antenna and the second antenna are symmetrically arranged.

9. The electronic device according to any one of claims 1 to 7, characterized in that: The first antenna and the second antenna are inverted-F antennas.

10. The electronic device according to any one of claims 1 to 7, characterized in that: The first antenna and the second antenna are disposed in a corner area or an edge area of ​​the floor.

11. The electronic device according to any one of claims 1 to 7, characterized in that: The operating frequency bands of the first antenna and the second antenna include a medium frequency band and / or a 2.4G frequency band.

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