Electronic device

Abstract

The invention discloses electronic equipment. The electronic equipment comprises a first antenna radiator; a first gap is formed between the target metal body and the first antenna; a second gap is formed among the third antenna radiator, the target metal body and the third antenna; the frequency band where the working frequency band range of the first antenna radiator and the working frequency band range of the third antenna radiator partially coincide is a target working frequency band; the target element group is connected with the target metal body, the target element group is connected with the carrier representing the ground, and the target element group is used for guiding surface current on the target metal body to flow to the carrier representing the ground to the first antenna radiator if the first antenna is in the target working frequency band; and if the third antenna is in the target working frequency band, guiding the surface current on the target metal body to flow to the carrier representing the ground to the third antenna radiator.

Description

Technical Field

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

[0002] Multiple antenna units are usually placed in a small mobile terminal. Due to the limited size of the terminal device, the mutual coupling of multiple antenna units is inevitable. The existence of mutual coupling will reduce the antenna efficiency. Therefore, how to reduce the mutual coupling between antenna units is a key issue.

[0003] One solution is to increase the distance between antenna units to improve the isolation between antennas, but this will cause a tight layout in the terminal device and has limited effect on reducing the isolation. Summary of the invention

[0004] The present application mainly provides an electronic device, and the technical solution of the present application is implemented as follows:

[0005] In a first aspect, an embodiment of the present application provides an electronic device, including:

[0006] a first antenna radiator;

[0007] a target metal body, wherein a first gap is formed between the target metal body and the first antenna;

[0008] a third antenna radiator, wherein a second gap is provided between the target metal body and the third antenna;

[0009] A frequency band in which the working frequency band range of the first antenna radiator partially overlaps with the working frequency band range of the third antenna radiator is the target working frequency band;

[0010] A target element group connected to the target metal body, the target element group is connected to a carrier of a representative ground, wherein the target element group is used for:

[0011] If the first antenna is in the target operating frequency band, guiding the surface current on the target metal body to flow to the carrier representing the ground to the first antenna radiator;

[0012] If the third antenna is in the target operating frequency band, the surface current on the target metal body is guided to flow to the carrier representing the ground to the third antenna radiator. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A schematic diagram of the structure of a terminal device;

[0014] Figure 2 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application Figure 1 ;

[0015] Figure 3A schematic diagram of the structure of an electronic device provided in an embodiment of the present application Figure 2 ;

[0016] Figure 4 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application Figure 3 ;

[0017] Figure 5 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application Figure 4 ;

[0018] Figure 6 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application Figure 5 ;

[0019] Figure 7 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application Figure 6 ;

[0020] Figure 8 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application Figure 7 ;

[0021] Fig. 9 A schematic diagram of the composition structure of a first circuit provided in an embodiment of the present application Figure 1 ;

[0022] Fig.10 A schematic diagram of an operating frequency band of a first circuit provided in an embodiment of the present application;

[0023] Fig.11 A schematic diagram of the composition structure of a first circuit provided in an embodiment of the present application Figure 2 ;

[0024] Fig.12 A schematic diagram of the structure of a second circuit provided in an embodiment of the present application;

[0025] Fig.13 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application Figure 8 ;

[0026] Fig.14 A schematic diagram of an isolation curve provided in an embodiment of the present application. DETAILED DESCRIPTION

[0027] In order to enable a more detailed understanding of the features and technical contents of the embodiments of the present application, the implementation of the embodiments of the present application is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the present application.

[0028] 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 are only for the purpose of describing the embodiments of this application and are not intended to limit this application.

[0029] In the following description, reference is made to “some embodiments”, which describe a subset of all possible embodiments, but it will be understood that “some embodiments” may be the same subset or different subsets of all possible embodiments and may be combined with each other without conflict.

[0030] It should also be pointed out that the terms "first\second\third" involved in the embodiments of the present application are only used to distinguish similar objects and do not represent a specific ordering of the objects. It can be understood that "first\second\third" can be interchanged in a specific order or sequence where permitted, so that the embodiments of the present application described here can be implemented in an order other than that illustrated or described here.

[0031] Figure 1 FIG. 1 is a schematic diagram of the structure of a terminal device. Figure 1 As shown, a plurality of antenna units need to be provided in the mobile terminal, for example, including antenna units for communication, such as Figure 1 The Long Term Evolution (LTE) antenna a3 in the embodiment may also include an antenna unit for wireless fidelity (Wi-Fi) network connection, such as Figure 1 The 2.4G WiFi antenna a1, the 5G WiFi antenna a2, etc., or may also include an antenna unit for Bluetooth wireless connection, etc. Figure 1 These are only examples of some antenna units in the terminal device. The terminal device may also include antenna units with other frequency bands and functions. These antenna units can operate in different frequency bands, thereby supporting more wireless communication bands and functions, and ensuring the communication quality and efficiency of the mobile terminal in different network environments.

[0032] Based on the requirement of thin and light terminal equipment structure, the terminal equipment has limited volume, and multiple antenna units are integrated in the terminal equipment, which makes the physical distance between multiple antenna units in the mobile terminal too close, which inevitably leads to mutual coupling. Mutual coupling will significantly reduce the efficiency of the antenna unit, thus affecting the communication quality. Moreover, as the distance between the antenna units decreases, the coupling of the antenna units will intensify, which may further reduce the antenna performance, resulting in a small isolation between the antenna units and affecting the overall performance of the terminal equipment.

[0033] In order to reduce the interference between antenna units, one solution is to increase the distance between antenna units to improve the isolation between antenna units. However, this method of increasing the distance between antenna units will cause the overall size of the antenna system to be larger, making the layout in the terminal device tight, which is not only not conducive to the layout of other components in the terminal device, but also the decoupling effect of this solution has great limitations, and the effect of reducing isolation is limited.

[0034] Based on this, an embodiment of the present application provides an electronic device, which guides the signal in the target working frequency band transmitted from the first antenna to the third antenna through a carrier of the characterizing ground to form a loop, and guides the signal in the target working frequency band transmitted from the third antenna to the first antenna through a carrier of the characterizing ground to form a loop. In this way, not only can the signals in the target working frequency band emitted by the first antenna and the third antenna be guided back to themselves to form a loop, thereby improving the efficiency of the first antenna and the third antenna, but also weakens the energy of mutual coupling between the first antenna and the third antenna, thereby improving the isolation between the first antenna and the third antenna, and improving the performance of the first antenna and the third antenna.

[0035] The present application is further described in detail below through the accompanying drawings and specific embodiments.

[0036] In one embodiment of the present application, Figure 2 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application Figure 1 .like Figure 2 As shown, the electronic device 10 includes:

[0037] A first antenna radiator 1011;

[0038] A target metal body 102, wherein a first gap is formed between the target metal body 102 and the first antenna 101;

[0039] A third antenna radiator 1041, a second gap is provided between the target metal body 102 and the third antenna 104;

[0040] The frequency band where the working frequency band range of the first antenna radiator 1011 partially overlaps with the working frequency band range of the third antenna 104 radiator is the target working frequency band;

[0041] A target component group 103 connected to the target metal body 102 is connected to a carrier 105 representing a ground.

[0042] The target element group 103 is used for:

[0043] If the first antenna 101 is in the target operating frequency band, the surface current on the target metal body 102 is guided to flow to the carrier 105 representing the ground to the first antenna radiator 1011;

[0044] If the third antenna 104 is in the target operating frequency band, the surface current on the target metal body 102 is guided to flow toward the carrier 105 representing the ground to the third antenna radiator 1041 .

[0045] In the embodiment of the present application, the electronic device 10 may be a small mobile terminal device with communication functions, such as a smart phone, a tablet computer, a smart watch, etc.

[0046] It should be understood that the electronic device 10 may be provided with a first antenna 101 and a third antenna 104, and the first antenna 101 and the third antenna 104 may be microstrip antennas, such as a planar inverted-F antenna (PIFA), a monopole antenna, etc., which are not specifically limited here. Among them, the first antenna 101 may include a dielectric substrate, a first antenna radiator 1011, and a ground plane, and the third antenna 104 may include a dielectric substrate, a third antenna radiator 1041, and a ground plane, etc.

[0047] In the embodiment of the present application, the target metal body 102 is disposed between the first antenna 101 and the third antenna 104. The target metal body 102 may be a metal device in the electronic device 10, or other components made of metal material, which are not specifically limited here. It should be understood that, since metal is conductive, the target metal body 102 has the function of an antenna. When there is a first gap between the target metal body 102 and the first antenna 101, and a second gap between the target metal body 102 and the third antenna 104, the target metal body 102 has a certain receiving capability for the signals sent by the first antenna 101 and the third antenna 104, so that the target metal body 102 can reflect and refract the wireless signals sent by the first antenna 101 and the third antenna 104 to a certain extent.

[0048] In the embodiment of the present application, the carrier 105 representing the ground may be a printed circuit board (PCB) in the electronic device 10, or other carrier having the function of ground. The carrier 105 representing the ground is connected to the ground terminal of the first antenna 101 and the ground terminal of the third antenna 104, and is also connected to the target element group 103.

[0049] In the embodiment of the present application, the target element group 103 may include at least one circuit or device capable of guiding the current on the upper surface of the target metal body 102 to the carrier 105 representing the ground, or other devices with current guiding function, which are not specifically limited here.

[0050] It should be noted that the operating frequency band range of the first antenna radiator 1011 partially overlaps with the operating frequency band range of the third antenna radiator 1041, and the partially overlapping frequency band can be determined as the target operating frequency band. For example, if the first antenna 101 is a WiFi 2.4G antenna, its operating frequency band range is 2.4Hz to 2.5GHz, and if the third antenna 104 is an LTEB40 antenna, its operating frequency band range is 2.3Hz to 2.4GHz, then in this case the target operating frequency band is 2.4GHz. It should be understood that when the target element group 103 is not set, the signal in the target working frequency band emitted by the first antenna 101 will propagate through the target metal body 102 in the direction of the third antenna 104. Since the target working frequency band is within the working frequency band of the third antenna radiator 1041, the signal will interfere with the normal operation of the third antenna 104. Correspondingly, the signal in the target working frequency band emitted by the third antenna 104 will also propagate through the target metal body 102 in the direction of the first antenna 101, affecting the normal operation of the first antenna 101.

[0051] It should also be noted that, when the target element group 103 is connected between the target metal body 102 and the carrier 105 representing the ground, after the first antenna 101 sends a signal in the target working frequency band, the target metal body 102 receives the signal, and a surface current is induced on its upper surface. The target element group 103 connected to the target metal body 102 can guide the surface current on the target metal body 102 to the carrier 105 representing the ground, and further guide the surface current, that is, the signal of the target working frequency band back to the first antenna radiator 1011 itself through the ground terminal of the first antenna 101 connected to the carrier 105 representing the ground. This not only forms a loop for the signal sent by the first antenna 101, thereby enhancing the efficiency of the first antenna 101, but also prevents the signal of the target working frequency band from propagating to the third antenna 104. Correspondingly, after the third antenna 104 sends out a signal in the target working frequency band, the target metal body 102 receives the signal, and a surface current is induced on its upper surface. The target element group 103 can guide the surface current on the target metal body 102 to the carrier 105 representing the ground, and then guide the surface current, that is, the signal in the target working frequency band, back to the third antenna radiator 1041 through the grounding terminal of the second antenna, which not only forms a loop for the signal sent by the third antenna 104 and enhances the efficiency of the third antenna 104, but also enables the signal in the target frequency band to no longer propagate to the first antenna 101. In this way, the degree of mutual interference between the first antenna 101 and the third antenna 104 is reduced, and the isolation between the first antenna 101 and the third antenna 104 is improved.

[0052] The embodiment of the present application provides an electronic device, which guides the signal in the target working frequency band transmitted from the first antenna to the third antenna through the carrier of the characterizing ground to form a loop, and guides the signal in the target working frequency band transmitted from the third antenna to the first antenna through the carrier of the characterizing ground to form a loop. In this way, not only can the signals in the target working frequency band transmitted by the first antenna and the third antenna be guided back to themselves to form a loop, thereby improving the efficiency of the first antenna and the third antenna, but also weakens the energy of mutual coupling between the first antenna and the third antenna, thereby improving the isolation between the first antenna and the third antenna, and improving the performance of the first antenna and the third antenna.

[0053] In another embodiment of the present application, continue to refer to Figure 2 , the first slot meets the target condition, so that the first antenna 101 is in the target working frequency band, and the surface current on the first antenna radiator 1011 flows to the target metal body 102 through the first slot;

[0054] The second slot meets the target condition, so that the third antenna 104 is in the target working frequency band and the surface current on the third antenna radiator 1041 flows to the target metal body 102 through the second slot.

[0055] In the embodiment of the present application, the first gap may refer to a long strip gap between the first antenna radiator 1011 and the target metal body 102 , and the second gap may refer to a long strip gap between the third antenna radiator 1041 and the target metal body 102 .

[0056] In the embodiment of the present application, when the first gap meets the target condition, after the first antenna 101 sends out a signal in the target working frequency band, the current generated on the upper surface of the first antenna radiator 1011 can form an inductive loop at the first gap. When the current passes through the first gap, a magnetic field is generated, thereby achieving the goal of guiding the current on the upper surface of the first antenna radiator 1011 through the first gap to the target metal body 102, and achieving the propagation of the signal from the first antenna radiator 1011 to the target metal body 102. Correspondingly, based on the same principle, when the second gap meets the target condition, after the third antenna 104 sends out a signal in the target working frequency band, the current generated on the upper surface of the third antenna radiator 1041 can be guided to the target metal body 102 through the second gap, and the signal is propagated from the third antenna radiator 1041 to the target metal body 102. It should be understood that the signals in other frequency bands sent by the first antenna 101 and the third antenna 104 can also be propagated to the target metal body 102 based on this principle, but because they do not overlap with the working frequency band range of the other antenna, the impact on isolation is relatively low.

[0057] The target condition may be a constraint condition on the width of the first slot and the second slot. When the target condition is met, the signals in the target frequency band emitted by the first antenna 101 and the third antenna 104 can be received by the target metal body 102, and will continue to be transmitted to each other when the target element group 103 is not set, so that the first antenna 101 and the third antenna 104 interfere with each other and affect the communication quality. It should be understood that the target condition can be specifically determined according to factors such as the operating frequency band range and signal wavelength of the first antenna radiator 1011, the operating frequency band range and signal wavelength of the third antenna radiator 1041, etc.

[0058] The embodiment of the present application provides an electronic device, when the first gap meets the target condition, the surface current on the first antenna radiator flows to the target metal body through the first gap; when the second gap meets the target condition, the surface current on the second antenna radiator flows to the target metal body through the second gap. In this way, the positional relationship between the target metal body and the first antenna radiator and the second antenna radiator is clarified, and then under this positional relationship, the first antenna and the third antenna are isolated.

[0059] In another embodiment of the present application, Figure 3 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application Figure 2 .like Figure 3 As shown, the target element group 103 includes:

[0060] The first circuit 1031 is connected to a first position of the target metal body 102 . The first circuit 1031 is equivalent to a capacitor connected to the carrier 105 representing the ground.

[0061] In the embodiment of the present application, the first circuit 1031 is connected between the first position of the target metal body 102 and the carrier 105 representing the ground, which is equivalent to a capacitor, and realizes the function of guiding the signal of the target working frequency band to the carrier 105 representing the ground. The specific devices and circuit structures included therein are not specifically limited here.

[0062] It should be noted that, for the first antenna 101 and the third antenna 104, the first circuit 1031 can be equivalent to a filter capacitor, and therefore, the first circuit 1031 can be used to guide the signal in the target working frequency band emitted by the first antenna 101 to the carrier 105 of the representative ground, and then transmit it back to the first antenna 101 through the carrier to form a loop; and guide the signal in the target working frequency band emitted by the third antenna 104 to the carrier 105 of the representative ground, and then transmit it back to the third antenna 104 through the carrier to form a loop. It should be understood that the filter capacitor equivalent to the first circuit 1031 can pass the signal in the target working frequency band, so the capacitance value of the filter capacitor equivalent to the first circuit 1031 can be specifically determined according to the target working frequency band.

[0063] An embodiment of the present application provides an electronic device, which guides the signal in the target frequency band emitted by the first antenna and the signal in the target working frequency band emitted by the third antenna to the ground by setting a first circuit equivalent to a capacitor, thereby improving the isolation between the first antenna and the third antenna.

[0064] In some embodiments, Figure 4 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application Figure 3 .like Figure 4 As shown, the target element group 103 includes:

[0065] A second circuit 1032, the second circuit 1032 is connected to a second position of the target metal body 102, and the second circuit 1032 is equivalent to being connected to the carrier 105 representing the ground with a zero-ohm resistor to achieve a short-circuit effect;

[0066] A metal member 1033, one end of the metal member 1033 is connected to the third position of the target metal body 102, and the other end of the metal member 1033 is connected to the carrier 105 representing the ground to achieve a short circuit effect;

[0067] The second position and the third position are located on both sides of the first position.

[0068] In an embodiment of the present application, the second circuit 1032 is connected between the second position of the target metal body 102 and the carrier 105 representing the ground. The second circuit 1032 is equivalent to a zero-ohm resistance for the first antenna 101. When the first antenna 101 sends a signal, it can guide the current on the upper surface of the target metal body 102 to the carrier 105 representing the ground, and through the connection between the carrier and the grounding terminal of the first antenna 101, the signal emitted by the first antenna 101 within the working range of the first antenna radiator 1011 is transmitted back to the first antenna 101, so that the signal emitted by the first antenna 101 forms a ring loop to achieve a short-circuit effect. The signal no longer propagates in the direction of the third antenna 104, thereby improving the efficiency of the first antenna 101 and improving the isolation between the first antenna 101 and the third antenna 104.

[0069] In the embodiment of the present application, the metal part 1033 may be a cubic metal part connected between the third position of the target metal body 102 and the carrier 105 representing the ground. When the third antenna 104 sends a signal, the metal part 1033 can transmit the signal back to the third antenna radiator 1041 through the carrier 105 representing the ground, so that the signal sent by the third antenna 104 forms a ring loop to achieve a short-circuit effect, and the signal no longer propagates in the direction of the first antenna 101, thereby improving the efficiency of the third antenna 104 and improving the isolation between the first antenna 101 and the third antenna 104.

[0070] It should be noted that the signal directed to the ground by the second circuit 1032 and the signal directed to the ground by the metal member 1033 may include a signal in a target operating frequency band.

[0071] It should also be noted that the second position can be set on a side close to the first antenna 101 , the third position can be set on a side close to the third antenna 104 , and the first position can be set in the middle of the first antenna 101 and the third antenna 104 .

[0072] It should be understood that in the embodiment of the present application, the target element group 103 includes the second circuit 1032 and the metal member 1033 , which can also achieve the effect of isolating the first antenna 101 and the third antenna 104 .

[0073] An embodiment of the present application provides an electronic device, which, by providing a second circuit and a metal part, not only improves the efficiency of the first antenna and the third antenna, but also isolates the first antenna from the third antenna, thereby improving the isolation between the first antenna and the third antenna.

[0074] In some embodiments, Figure 5 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application Figure 4 .like Figure 5 As shown, the target element group 103 may include: a first circuit 1031 and a second circuit 1032; wherein the first circuit 1031 is connected between a first position of the target metal body 102 and a carrier 105 representing a ground, and the second circuit 1032 is connected between a second position of the target metal body 102 and the carrier 105 representing a ground.

[0075] In the embodiment of the present application, the first circuit 1031 can guide the signals of the target working frequency band emitted by the first antenna 101 and the third antenna 104 back to itself through the carrier 105 representing the ground to form a loop, thereby isolating the first antenna 101 from the third antenna 104; the second circuit 1032 can transmit the signals emitted by the first antenna 101 back to the first antenna radiator 1011 through the carrier 105 representing the ground to form a loop, thereby further improving the efficiency of the first antenna 101. Among them, the first circuit 1031 can work in the target working frequency band to improve the isolation between the first antenna 101 and the third antenna 104; the second circuit 1032 can work in the frequency band of the working frequency band of the first antenna radiator 1011 except the target working frequency band to improve the working efficiency of the first antenna 101, or the second circuit 1032 works in the target working frequency band to further improve the isolation between the first antenna 101 and the third antenna 104.

[0076] In some embodiments, Figure 6 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application Figure 5 .like Figure 6As shown, the target element group 103 may include: a first circuit 1031 and a metal part 1033; wherein the first circuit 1031 is connected between a first position of the target metal body 102 and a carrier 105 representing the ground, and the metal part 1033 is connected between a third position of the target metal body 102 and the carrier 105 representing the ground.

[0077] In the embodiment of the present application, the first circuit 1031 can be used to achieve isolation between the first antenna 101 and the third antenna 104, and the metal part 1033 can transmit the signal emitted by the third antenna 104 back to the third antenna 104 through the carrier 105 representing the ground to form a loop, thereby further improving the efficiency of the third antenna 104. Among them, the first circuit 1031 can work in the target working frequency band to improve the isolation between the first antenna 101 and the third antenna 104; the metal part 1033 can work in the frequency band other than the target working frequency band in the working frequency band range of the third antenna radiator 1041 to improve the working efficiency of the third antenna 104, or the metal part 1033 works in the target working frequency band to further improve the isolation between the first antenna 101 and the third antenna 104.

[0078] In some embodiments, Figure 7 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application Figure 6 .like Figure 7 As shown, the target component group 103 may include: a first circuit 1031 , a second circuit 1032 and a metal member 1033 , and the connection relationship thereof may refer to the aforementioned embodiment.

[0079] In the embodiment of the present application, the first circuit 1031 can work in the target working frequency band, and based on the principle in the above embodiment, the isolation between the first antenna 101 and the third antenna 104 is improved. The second circuit 1032 and the metal member 1033 are arranged on both sides of the first circuit 1031. Preferably, the second circuit 1032 is arranged on the side close to the first slot, and the isolation between the first antenna 101 and the third antenna 104 can be further improved when working in the target working frequency band, or, when working in a frequency band other than the target working frequency band, to improve the working efficiency of the first antenna 101; the metal member 1033 is arranged on the side close to the second slot, and the isolation between the first antenna 101 and the third antenna 104 can be further improved when working in the target working frequency band, or, when working in a frequency band other than the target working frequency band, to improve the working efficiency of the third antenna 104.

[0080] It should be understood that the above lists are several possible embodiments in which the target component group 103 may include circuits. In some other embodiments, the target component group 103 may also include other circuits or devices, which are not listed here one by one.

[0081] In another embodiment of the present application, Figure 8 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application Figure 7 .like Figure 8 As shown, the target metal body 102 is the second antenna radiator 1021 , the distance between the first position 03 and the first slot is equal to a quarter wavelength of the operating frequency band of the second antenna, and the distance between the third position 04 and the second slot is equal to a quarter wavelength of the operating frequency band of the third antenna 104 .

[0082] In the embodiments of the present application, it should be noted that: Figure 8 Taking the target metal body 102 as the second antenna radiator 1021, and the first antenna 101, the second antenna, and the third antenna 104 are all inverted F-type antennas as an example, the first position 03, the second position 02, and the third position 04 are described. For the convenience of description, the target element group is not shown. It should be understood that the above-mentioned antenna radiators can also be other types of antennas, such as monopole antennas, etc., which are not specifically limited here. Preferably, the operating frequency band range of the second antenna radiator 1021 does not overlap with the operating frequency band range of the first antenna radiator 1011 and the operating frequency band range of the third antenna radiator 1041.

[0083] In the embodiment of the present application, the distance d between the first position 03 and the first gap is a quarter wavelength of the working frequency band of the second antenna, and is placed in a clear area, that is, an area without a carrier representing the ground. That is, the distance d can be calculated according to the formula d=1 / 4λ g1 Determine, among which, C0 is the speed of light, f1 is the operating frequency band of the second antenna, which is within the operating frequency band of the second antenna radiator 1021 and can be determined based on the main operating frequency band of the second antenna, ε r It is a parameter related to the propagation medium. Its value varies depending on the medium. For example, in a vacuum environment, ε r is 1, and when the antenna surface is wrapped with plastic, its value is 4. After verification, arranging the first circuit 1031 at this position can significantly improve the isolation between the first antenna 101 and the third antenna 104, and is the preferred position.

[0084] In the embodiment of the present application, the distance s between the third position 04 and the second slot is a quarter wavelength of the working frequency band of the third antenna 104, and is connected to the carrier 105 representing the ground. The distance s can be calculated according to the formula d=1 / 4λ g2 Determine, among which, C0 is the speed of light, f2 is the operating frequency band of the third antenna 104, which is within the operating frequency band of the third antenna radiator 1041 and can be determined based on the main operating frequency band of the third antenna 104, ε rIt is a parameter related to the propagation medium. It has been verified that the metal piece 1033 is arranged at this position, so that the third antenna radiator 1041 and the metal piece 1033 form a coupler, which has a more obvious effect of improving the efficiency of the third antenna 104, and is a preferred embodiment.

[0085] In some embodiments, the distance between the second position 02 and the first gap can also be set to be equal to one-quarter wavelength of the working frequency band of the first antenna 101. It has been verified that setting the second circuit 1032 at this position has a more obvious effect on improving the efficiency of the first antenna 101, and it is a preferred position.

[0086] The embodiment of the present application provides an electronic device, in which, when the target metal body is a second antenna radiator, the distance between the first position and the first slot is equal to one quarter wavelength of the operating frequency band of the second antenna, and the distance between the third position and the second slot is equal to one quarter wavelength of the operating frequency band of the third antenna. In this way, the role of the first circuit and the metal part can be brought into play as much as possible, and the isolation between the first antenna and the third antenna is further improved, as well as the efficiency of the third antenna is improved.

[0087] In some embodiments, Fig. 9 A schematic diagram of the composition structure of a first circuit provided in an embodiment of the present application Figure 1 .like Fig. 9 As shown, the first circuit 1031 includes: a first capacitor C1 and a first inductor L1;

[0088] A first end of the first capacitor C1 is connected to a first position 03 of the target metal body 102 , a second end of the first capacitor C1 is connected to a first end of the first inductor L1 , and a second end of the first inductor L1 is connected to a carrier 105 representing a ground.

[0089] In the embodiment of the present application, the first circuit 1031 can be composed of a first capacitor C1 and a first inductor L1. Since the capacitor has the characteristics of isolating DC and passing AC, and the higher the AC frequency, the easier it is to pass, and the inductor has the characteristics of isolating AC and passing DC, and the higher the AC frequency, the less likely it is to pass. Therefore, the combination of the first capacitor C1 and the first inductor L1 can be used as a bandpass filter, which is equivalent to a capacitor for the first antenna 101 and the third antenna 104, allowing signals in the target operating frequency band to pass.

[0090] It should be noted that the capacitance value of the first capacitor C1 and the inductance value of the first inductor L1 can be determined according to the target operating frequency band. In the case where the target component group only includes the first capacitor C1 and the first inductor L1, it can be determined based on the following steps:

[0091] First, determine the value of the first capacitor C1. Since the value of the first capacitor C1 affects the decoupling bandwidth, the larger the value, the wider the bandwidth. However, too wide a bandwidth will affect other frequency bands. Generally, the value range is [0.5pF, 1.5pF]. The capacitance value of the first capacitor C1 can be adaptively selected according to the target operating frequency band. For example, when the target operating frequency band is 2.4GHz, the capacitance value of the first capacitor C1 can be selected to be 0.7pF, or 0.5pF.

[0092] Furthermore, the inductance value of the first inductor L1 is determined, and the first capacitor C1 and the first inductor L1 are used together as parameters of the decoupling function to determine the working frequency band of the first circuit 1031, that is, f=(C1, L1). Fig.10 A schematic diagram of an operating frequency band of a first circuit provided in an embodiment of the present application, such as Fig.10 As shown, the horizontal axis of the curve represents the frequency of different working frequency bands, and the vertical axis represents the isolation between the first antenna 101 and the third antenna 104. Among them, each parabolic waveform corresponds to a set of first capacitors C1 and a set of first inductors L1. It can be seen that for a fixed C1, when L1 becomes larger, the decoupling frequency tends to shift to a low frequency. According to this feature, the optimal isolation value corresponding to the target working frequency band f1 can be found by parameter scanning. That is to say, after the capacitance value of the first capacitor C1 is fixed, the inductance value of the first inductor L1 can be adjusted so that the lowest point of the parabola determined by the first capacitor C1 and the first inductor L1 corresponds to the f1 point. For example, when the target working frequency band is 2.4GHz and the capacitance value of the first capacitor C1 is 0.7pF, the inductance value of the first inductor L1 can be determined to be 8.2nH. In this way, after determining the capacitance value of the first capacitor C1 and the inductance value of the first inductor L1, the isolation can be further improved based on the first circuit 1031.

[0093] It should also be noted that Fig. 9 The 03 end in the figure represents the first position 03 of the second antenna radiator 1021, and the ground end is the carrier 105 representing the ground.

[0094] In some embodiments, Fig.11 A schematic diagram of the composition structure of a first circuit provided in an embodiment of the present application Figure 2 .like Fig.11 As shown, the first circuit 1031 also includes a second capacitor C2 and a second inductor L2;

[0095] A first end of the second capacitor C2 is connected to the first position 03 of the target metal body 102 , a second end of the second capacitor C2 is connected to a first end of the second inductor L2 , and a second end of the second inductor L2 is connected to a carrier 105 representing a ground.

[0096] In the embodiment of the present application, on the basis that the first circuit 1031 includes the first capacitor C1 and the first inductor L1, the first circuit 1031 may further include a second capacitor C2 and a second inductor L2, wherein the branch where the second capacitor C2 and the second inductor L2 are located is connected in parallel with the branch where the first capacitor C1 and the first inductor L1 are located. It should be understood that the branch where the second capacitor C2 and the second inductor L2 are located may be set at the first position 03 of the second antenna radiator 1021, or, in some embodiments, the branch where the second capacitor C2 and the second inductor L2 are located may also be set at other positions on the second antenna radiator 1021.

[0097] It should be noted that the capacitance value of the second capacitor C2 and the inductance value of the second inductor L2 can be based on the formula Determine, where f represents the operating frequency range of the second antenna radiator 1021, L is the inductance value of the second inductor L2, and C is the capacitance value of the second capacitor C2. Exemplarily, when the second antenna is an N78 / 5G WIFI antenna, it can be determined that the capacitance value of the second capacitor C2 is 1pF, and the inductance value of the second inductor L2 is 1.5nH.

[0098] It should also be noted that the branch where the second capacitor C2 and the second inductor L2 are located operates in the operating frequency band corresponding to the second antenna radiator 1021, so that the second antenna forms an inverted F antenna structure, avoiding interference with the second antenna by other devices in the target component group, such as the first capacitor C1 and the first inductor L1, thereby reducing the impact on the working state of the second antenna.

[0099] In some embodiments, Fig.12 The following is a schematic diagram of the structure of a second circuit provided in an embodiment of the present application. Fig.12 As shown, the second circuit 1032 includes: a third capacitor C3 and a third inductor L3, the first end of the third capacitor C3 is connected to the first position 03 of the target metal body 102, the second end of the third capacitor C3 is connected to the first end of the third inductor L3, and the second end of the third inductor L3 is connected to the carrier 105 representing the ground.

[0100] In the embodiment of the present application, the capacitance value of the third capacitor C3 and the inductance value of the third inductor L3 can also be based on the formula Determine, where f represents the operating frequency range of the third antenna radiator 1041, L is the inductance value of the third inductor L3, and C is the capacitance value of the third capacitor C3. Exemplarily, when the first antenna 101 works at WIFI 2.4G, it can be determined that the capacitance value of the third capacitor C3 is 0.7pF, and the inductance value of the second inductor L2 is 4.7nH.

[0101] It should be noted that the branch where the third capacitor C3 and the third inductor L3 are located can be connected to the second position 02 of the second antenna radiator 1021, and the third capacitor C3 and the third inductor L3 form a bandpass filter, which is equivalent to a zero-ohm resistor, thereby transmitting the signal within the working frequency band of the first antenna radiator 1011 back to the first antenna 101 through the carrier 105 representing the ground, thereby improving the efficiency of the first antenna 101.

[0102] In some embodiments, the target component group may include a first capacitor C1 , a first inductor L1 , a third capacitor C3 , and a third inductor L3 .

[0103] Alternatively, in some embodiments, the target component group may include a first capacitor C1 , a first inductor L1 , and a metal member 1033 .

[0104] Alternatively, in some embodiments, the target component group may include a third capacitor C3 , a third inductor L3 , and a metal member 1033 .

[0105] Alternatively, in some embodiments, the target component group may include a first capacitor C1 , a first inductor L1 , a third capacitor C3 , a third inductor L3 , and a metal member 1033 .

[0106] In addition, based on the above embodiment, the target component group may further include a second capacitor C2 and a second inductor L2.

[0107] An embodiment of the present application provides an electronic device, which sets the values ​​of components such as a first capacitor, a first inductor, a second capacitor, a second inductor, a third capacitor and a third inductor, so that the first circuit and the second circuit can further improve the isolation between the first antenna and the third antenna, and also improve the efficiency of the first antenna and the second antenna.

[0108] In another embodiment of the present application, see Figure 8 , the feeding point of the first antenna 101 is set at the fourth position 01 of the first antenna radiator 1011;

[0109] The feeding point of the second antenna is set at the second position 02;

[0110] The feeding point of the third antenna 104 is arranged at the fifth position 05 of the third antenna radiator 1041;

[0111] The fourth position 01 and the fifth position 05 are located on both sides of the second position 02 .

[0112] In the embodiments of the present application, Figure 8As shown, the first antenna 101, the second antenna, and the third antenna 104 are all inverted F-type antennas. For example, the feeding point of the first antenna 101 can be set at the fourth position 01 on the first antenna radiator 1011, and the fourth position 01 is on the side of the second position 02 close to the first slot; the feeding point of the third antenna 104 can be set at the fifth position 05 on the third antenna radiator 1041, and the fifth position 05 is on the side of the second position 02 close to the second slot. The distance between the fourth position 01 and the first slot, and the distance between the fifth position 05 and the second slot are not specifically limited.

[0113] In the embodiment of the present application, the feeding point of the second antenna can be set at the second position 02, so that the second position 02 can not only be used to connect the second circuit 1032, but also serve as a feeding branch. In addition, the third position 04 can serve as the grounding terminal of the second antenna.

[0114] The embodiment of the present application provides an electronic device, which respectively determines the positions of the feeding points in the first antenna, the second antenna and the third antenna, wherein the feeding point of the second antenna can be set at the second position. In this way, there is no need to set up extra branches, and the decoupling branch where the second circuit is located can be used as a feeding branch, thereby improving the reuse degree of the antenna and reducing the size of the antenna.

[0115] In another embodiment of the present application, Fig.13 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application Figure 8 . See Fig.13 The first circuit 1031 is configured to perform bandpass filtering and grounding on the signals in the target operating frequency band and the signals in the operating frequency band range of the first antenna radiator 1011, and to filter out the signals that are not in the operating frequency band range of the second antenna radiator 1021;

[0116] The second circuit 1032 is configured to perform band-pass filtering on the signal within the working frequency range of the first antenna radiator 1011 and to ground the signal;

[0117] The metal member 1033 is configured to perform band-pass filtering on the signal within the working frequency band of the third antenna radiator 1041 and to ground the signal.

[0118] In the embodiments of the present application, Fig.13As shown, the first antenna 101 works on the global positioning system (GPS) L1 / WIFI2.4G / BT, the second antenna works on N78 / 5GWIFI, the third antenna 104 works on LTE B40 / B41, and the first antenna 101, the second antenna, and the third antenna 104 are all inverted F-type antennas. The feeding points of the first antenna 101, the second antenna, and the third antenna 104 are respectively set at the antenna branches at the fourth position 01, the second position 02, and the fifth position 05. The branch at the first position 03 is a decoupling branch, connected to the first circuit 1031, and the third position 04 is short-circuited to the ground, which is a coupling branch of the third antenna 104, used to enhance the efficiency of the third antenna 104.

[0119] It should be noted that when the target element group 103 is not set, when the first gap and the second gap meet the target conditions, the isolation between the first antenna 101 and the third antenna 104 in the electronic device 10 is about 12.5 dB, which cannot meet the communication requirements and will cause mutual interference.

[0120] like Fig.13 As shown, the target element group 103 can be used as a decoupling circuit, including a first circuit 1031 and a second circuit 1032, that is, three groups of bandpass filters, and a metal part 1033, to achieve high isolation between the first antenna 101 and the third antenna 104. Among them, a group of WiFi2.4G bandpass filters can be added to the matching circuit connected to the branch at the second position 02 of the second antenna radiator 1021, including a third capacitor C3 and a third inductor L3, and exemplarily, their values ​​can be set to 0.7pF and 4.7nH respectively, so that they can be grounded to the signal sent by the first antenna 101. In addition, two groups of bandpass filters can be added at the first position 03 of the second antenna radiator 1021, including the first capacitor C1 and the first inductor L1 as a group of bandpass filters, and the second capacitor C2 and the second inductor L2 as the second bandpass filter, so that it is equivalent to a filter capacitor for the signal of the target working frequency band. In this way, under the joint action of the three groups of bandpass filters, the isolation between the first antenna 101 and the third antenna 104 is improved. The main working principle is that for high-frequency signals, a set of filter circuits at the second position 02 is equivalent to grounding, and the two sets of filter circuits at the first position 03 are equivalent to capacitors, and the filter circuits have little effect on the operation of the second antenna.

[0121] In addition, referring to the aforementioned embodiment, the distance between the first position 03 and the first slot may be one quarter wavelength of the operating frequency band of the second antenna, and the distance between the third position 04 and the second slot may be one quarter wavelength of the operating frequency band of the third antenna 104 .

[0122] It should also be noted that, when the target component group includes a first capacitor C1, a first inductor L1, a second capacitor C2, a second inductor L2, a third capacitor C3, a third inductor L3 and a metal part 1033, the values ​​of the second capacitor C2, the second inductor L2, the third capacitor C3, and the third inductor L3 can be fixed first, and then the capacitance value of the first capacitor C1 and the inductance value of the first inductor L1 can be determined based on the method in the aforementioned embodiment.

[0123] Fig.14 Schematic diagram of an isolation curve provided in an embodiment of the present application. Fig.14 As shown, the horizontal axis represents frequency, and the vertical axis represents the isolation between the antenna and other antennas. Among them, S1 represents the isolation curve between the first antenna and other antennas, S2 represents the isolation curve between the second antenna and other antennas, and S3 represents the isolation curve between the third antenna and other antennas. It can be seen that before the target element group is set, the isolation between the first antenna and the third antenna is only 12.5dB. After adopting the solution of the embodiment of the present application, the isolation between the first antenna and the third antenna reaches a maximum of 30dB, and the sideband has a minimum isolation of 13.5dB, which significantly improves the data throughput of WIFI and cellular.

[0124] The embodiment of the present application provides an electronic device, which can improve the isolation of the same frequency without additional decoupling branches, adopts a method of three sets of filter circuits, is easy to adjust, and can meet various complex machine state requirements. The circuit structure is simple and the isolation is improved.

[0125] An embodiment of the present application provides an electronic device in which two antennas of the same specific frequency band form a coupling effect through a gap between the two antennas and a target metal body, that is, surface currents of the same frequency band will jump over the gap and flow through the target metal body to the other end antenna. By connecting a target element group to the target metal body, the surface current is guided to flow back to the antenna itself, thereby achieving a decoupling effect.

[0126] It should be understood that "one embodiment" or "an embodiment" or "some embodiments" mentioned throughout the specification means that specific features, structures or characteristics related to the embodiment are included in at least one embodiment of the present application. Therefore, "in one embodiment" or "in one embodiment" or "in some embodiments" appearing throughout the specification may not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner. It should be understood that in various embodiments of the present application, the size of the sequence number of the above-mentioned processes does not mean the order of execution, and the execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiment of the present application. The above-mentioned sequence numbers of the embodiments of the present application are only for description and do not represent the advantages and disadvantages of the embodiments. The above description of each embodiment tends to emphasize the differences between the various embodiments, and the same or similar aspects can be referenced to each other. For the sake of brevity, this article will not repeat them.

[0127] It should also be noted that in this application, the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0128] The serial numbers of the above-mentioned embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0129] The methods disclosed in several method embodiments provided in this application can be arbitrarily combined without conflict to obtain new method embodiments.

[0130] The features disclosed in several product embodiments provided in this application can be arbitrarily combined without conflict to obtain new product embodiments.

[0131] The features disclosed in several method or device embodiments provided in this application can be arbitrarily combined without conflict to obtain new method embodiments or device embodiments.

[0132] The above is only a preferred embodiment of the present application and is not intended to limit the scope of protection of the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. An electronic device, comprising: a first antenna radiator; a target metal body, wherein a first gap is formed between the target metal body and the first antenna; A third antenna radiator, wherein a second gap is provided between the target metal body and the third antenna; A frequency band in which the working frequency band range of the first antenna radiator partially overlaps with the working frequency band range of the third antenna radiator is a target working frequency band; A target element group connected to the target metal body, the target element group being connected to a carrier of a representative ground, wherein the target element group is used for: If the first antenna is in the target operating frequency band, guiding the surface current on the target metal body to flow to the carrier representing the ground to the first antenna radiator; If the third antenna is in the target operating frequency band, the surface current on the target metal body is guided to flow to a carrier representing the ground to the third antenna radiator.

2. The electronic device according to claim 1, wherein the first slot meets a target condition, so that the first antenna is in the target operating frequency band and a surface current on the first antenna radiator flows through the first slot to the target metal body; The second slot meets the target condition, so that the third antenna is in the target operating frequency band and the surface current on the third antenna radiator flows to the target metal body through the second slot.

3. The electronic device according to claim 2, wherein the target component group comprises: A first circuit is connected to a first position of the target metal body, and the first circuit is equivalent to a capacitor connected to a carrier representing the ground.

4. The electronic device according to claim 3, wherein the target component group comprises: A second circuit, the second circuit is connected to a second position of the target metal body, the second circuit is equivalent to a zero-ohm resistor connected to the carrier representing the ground to achieve a short-circuit effect; A metal piece, one end of which is connected to the third position of the target metal body, and the other end of which is connected to the carrier representing the ground to achieve a short-circuit effect; The second position and the third position are located on both sides of the first position.

5. The electronic device according to claim 4, wherein the target metal body is a second antenna radiator, the distance between the first position and the first slot is equal to one quarter wavelength of the operating frequency band of the second antenna, and the distance between the third position and the second slot is equal to one quarter wavelength of the operating frequency band of the third antenna.

6. The electronic device according to claim 5, wherein the first circuit comprises a first capacitor and a first inductor; The first end of the first capacitor is connected to the first position of the target metal body, the second end of the first capacitor is connected to the first end of the first inductor, and the second end of the first inductor is connected to the carrier representing the ground.

7. The electronic device according to claim 6, wherein the first circuit further comprises a second capacitor and a second inductor; The first end of the second capacitor is connected to the first position of the target metal body, the second end of the second capacitor is connected to the first end of the second inductor, and the second end of the second inductor is connected to the carrier representing the ground.

8. According to the electronic device of claim 5, the second circuit includes a third capacitor and a third inductor, the first end of the third capacitor is connected to the first position of the target metal body, the second end of the third capacitor is connected to the first end of the third inductor, and the second end of the third inductor is connected to the carrier representing the ground.

9. The electronic device according to claim 6 or 7, wherein the feeding point of the first antenna is arranged at a fourth position of the first antenna radiator; The feeding point of the second antenna is arranged at the second position; The feeding point of the third antenna is arranged at the fifth position of the third antenna radiator; in, The fourth position and the fifth position are located at both sides of the second position.

10. The electronic device according to claim 6 or 7, The first circuit is configured to perform bandpass filtering and grounding on the signals in the target operating frequency band and the signals in the operating frequency band range of the first antenna radiator, and to filter out the signals that are not in the operating frequency band range of the second antenna radiator; The second circuit is configured to perform band-pass filtering on the signal within the working frequency band of the first antenna radiator and to ground the signal; The metal part is configured to perform band-pass filtering on the signal within the working frequency band of the third antenna radiator and to ground the signal.

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