Electronic device

Abstract

The invention provides electronic equipment, and belongs to the technical field of electronic equipment, and the electronic equipment comprises an equipment main body which is provided with a frequency selection surface; the first antenna is arranged on the equipment main body, and the first antenna works in a first frequency band; wherein the frequency selection surface is located on the side of the first antenna, and the frequency selection surface is in a band elimination state for the first frequency band.

Description

Technical Field

[0001] This application belongs to the technical field of electronic devices, and particularly relates to an electronic device. Background Art

[0002] In the related art, a first antenna is provided on some electronic devices to provide a satellite positioning function for the electronic devices. However, due to the limited size of the electronic devices, the directivity of the first antenna is poor, resulting in a poor effect of satellite positioning. Summary of the Invention

[0003] The purpose of the embodiments of this application is to provide an electronic device, which can effectively solve the technical problem of poor directivity of the first antenna of the electronic device.

[0004] The embodiments of this application provide an electronic device, including:

[0005] A device body, on which a frequency selective surface is provided;

[0006] A first antenna, arranged on the device body, and the first antenna operates in a first frequency band;

[0007] Wherein, the frequency selective surface is located on the side of the first antenna, and the frequency selective surface is in a band-stop state for the first frequency band.

[0008] As a possible implementation manner, it further includes:

[0009] A second antenna, arranged on the device body, and the second antenna operates in a second frequency band;

[0010] Wherein, the frequency selective surface is in a band-pass state for the second frequency band.

[0011] As a possible implementation manner, the first frequency band is a satellite communication frequency band;

[0012] The second frequency band is at least one of a mobile communication frequency band, a proximity communication frequency band, a Bluetooth communication frequency band, and a wireless local area network communication frequency band.

[0013] As a possible implementation manner, the frequency selective surface avoids the peak position of the electric field pattern of the second antenna; or

[0014] The frequency selective surface avoids the peak position of the current pattern of the second antenna.

[0015] As a possible implementation manner, the frequency selective surface includes:

[0016] A passive resonant structure, which is periodically distributed on the device body;

[0017] A flexible circuit board, arranged on the passive resonant structure;

[0018] The flexible circuit board has a resonant circuit, which is used to reduce the electrical length of the passive resonant structure.

[0019] As a possible implementation, the passive resonant structure includes a first end and a second end, the first end and the second end are separated, and the resonant circuit connects the first end and the second end.

[0020] As a possible implementation, the flexible printed circuit board is also provided with an electrical adjustment circuit, and the electrical adjustment circuit is used to adjust the resonant frequency of the passive resonant structure.

[0021] As a possible implementation, the polarization direction of the passive resonant structure is consistent with the polarization direction of the first antenna.

[0022] As a possible implementation, the device body includes:

[0023] Frame;

[0024] A battery cover, arranged on the frame;

[0025] A circuit board bracket is arranged between the frame and the battery cover;

[0026] The frequency selection surface is arranged on at least one of the battery cover and the circuit board bracket.

[0027] As a possible implementation, the first side of the first antenna faces the outside of the device body, the frequency selective surface is located at least on the second side of the first antenna, and the frequency selective surface is located at most on the second side, the third side, and the fourth side of the first antenna;

[0028] The second side is a side away from the first side, and the third side and the fourth side are two sides adjacent to the first side.

[0029] In an embodiment of the present application, the electronic device includes a device body and a first antenna, the first antenna is arranged on the device body, the first antenna operates in a first frequency band, and the device body has a frequency selective surface, the frequency selective surface is arranged on the side of the first antenna, the frequency selective surface is in a band-stop state for the first frequency band, and then the frequency selective surface will form a ground for the first frequency band in which the first antenna operates, thereby sharpening the radiation direction of the first antenna, improving the directivity of the first antenna, and improving the reliability of the satellite positioning function of the electronic device. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0031] Figure 1 A schematic diagram of an electronic device provided by an embodiment of the present application is shown;

[0032] Figure 2 shows a cross-sectional view of an electronic device provided by an embodiment of the present application;

[0033] Figure 3 shows a schematic diagram of an electronic device provided by an embodiment of the present application;

[0034] Figure 4 shows a schematic diagram of a frequency selective surface in an electronic device provided by an embodiment of the present application;

[0035] Figure 5 shows a schematic diagram of a passive resonant structure and a flexible circuit board in an electronic device provided by an embodiment of the present application;

[0036] Figure 6 shows a schematic diagram of a passive resonant structure and a resonant circuit in an electronic device provided by an embodiment of the present application;

[0037] Figure 7 shows a schematic diagram of a flexible circuit board in an electronic device provided by an embodiment of the present application.

[0038] Figures 1 to 7 Reference numerals:

[0039] 100 Electronic device, 110 Device main body, 112 Frequency selective surface, 114 Passive resonant structure, 1142 First end, 1144 Second end, 116 Flexible circuit board, 118 Resonant circuit, 120 Electric tuning circuit, 122 Frame, 124 Battery cover, 126 Circuit board bracket, 128 Circuit board, 130 First antenna, 132 First side, 134 Second side, 136 Third side, 138 Fourth side, 140 Second antenna. Detailed description of the specific implementation

[0040] The embodiments of the present application will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present application and should not be construed as a limitation of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the scope of protection of the present application.

[0041] The terms "first" and "second" in the specification and claims of the present application may explicitly or implicitly include one or more of such features. In the description of the present application, unless otherwise specified, the meaning of "a plurality" is two or more. In addition, "and / or" in the specification and claims means at least one of the connected objects. The character " / " generally means that the related objects before and after are in an "or" relationship.

[0042] In the description of the present application, it should be understood that the orientation or positional relationship indicated by terms such as "upper" and "inner" is based on the orientation or positional relationship shown in the drawings. This is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0043] In the description of the present application, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", and "coupled" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0044] The following Figures 1 to 7 describes an electronic device 100 according to an embodiment of the present application.

[0045] As Figure 1 and Figure 3 shown, an embodiment of the present application provides an electronic device 100, including: a device body 110, on which a frequency selective surface 112 is provided; a first antenna 130, disposed on the device body 110, and the first antenna 130 operates in a first frequency band; wherein, the frequency selective surface 112 is located on the side of the first antenna 130, and the frequency selective surface 112 is in a band-stop state for the first frequency band.

[0046] In an embodiment of the present application, the electronic device 100 includes a device body 110 and a first antenna 130. The first antenna 130 is disposed on the device body 110 and operates in a first frequency band. Moreover, a frequency selective surface 112 is provided on the device body 110. The frequency selective surface 112 is disposed on the side of the first antenna 130 and is in a band-stop state for the first frequency band. Furthermore, the frequency selective surface 112 will form a ground for the first frequency band in which the first antenna 130 operates, thereby sharpening the radiation direction of the first antenna 130, improving the directivity of the first antenna 130, enhancing the reliability of the satellite positioning function of the electronic device 100, and realizing a differential antenna directivity design for different frequency bands within the limited internal space of the electronic device 100.

[0047] Wherein, the first antenna 130 may be a satellite communication antenna, and satellite communication may adopt the Global Navigation Satellite System (GNSS).

[0048] As shown in Figure 1 and Figure 3 As a possible implementation, it further includes: a second antenna 140 disposed on the device body 110, and the second antenna 140 operates in a second frequency band; wherein, the frequency selective surface 112 is in a band-pass state for the second frequency band.

[0049] Specifically, the electronic device 100 further includes a second antenna 140 disposed on the device body 110 to meet other communication functions of the electronic device 100. The second antenna 140 operates in a second frequency band, and the frequency selective surface 112 is in a band-pass state for the second frequency band, thereby reducing the influence of the frequency selective surface 112 on the second antenna 140 and ensuring the normal operation of other communication functions of the electronic device 100 except for the satellite communication function.

[0050] Wherein, the second antenna 140 may be a mobile network antenna, a wireless network antenna, a Bluetooth network antenna, or a proximity network antenna, etc.

[0051] That is, the frequency selective surface 112 in the electronic device 100 provided in this application forms a band-stop reflection effect on the first frequency band in which the first antenna 130 operates, and forms a band-pass effect on the second frequency band in which the second antenna 140 operates. In this way, the frequency selective surface 112 will form a new ground for the first frequency band of the first antenna 130 to sharpen its radiation directivity, while for the second frequency band of the second antenna 140, since the frequency selective surface 112 is band-pass, it will not significantly affect its radiation directivity.

[0052] As a possible implementation, the first frequency band is a satellite communication frequency band.

[0053] Specifically, the first frequency band is a satellite communication frequency band, that is, the GNSS frequency band, so that the electronic device has better satellite communication capabilities.

[0054] As a possible implementation, the second frequency band is at least one of a mobile communication frequency band, a proximity communication frequency band, a Bluetooth communication frequency band, and a wireless local area network communication frequency band.

[0055] Specifically, the second frequency band is at least one of a mobile communication frequency band, a proximity communication frequency band, a Bluetooth communication frequency band, and a wireless local area network communication frequency band.

[0056] As a possible implementation, the frequency selective surface 112 avoids the peak position of the electric field pattern of the second antenna 140; or the frequency selective surface 112 avoids the peak position of the current pattern of the second antenna 140.

[0057] Specifically, the frequency selective surface 112 avoids the peak position of the electric field pattern of the second antenna 140, thereby reducing the influence of the frequency selective surface 112 on the second antenna 140 and ensuring the normal use of the second antenna 140.

[0058] Or the frequency selective surface 112 avoids the peak position of the current pattern of the second antenna 140, thereby reducing the influence of the frequency selective surface 112 on the second antenna 140 and ensuring the normal use of the second antenna 140.

[0059] Wherein, the frequency selective surface 112 may moderately intrude into the clearance of the second antenna 140, but should try to avoid the peak position of the electric field pattern or current pattern of the radiation pattern of the second antenna 140 to reduce the influence on the efficiency of the second antenna 140.

[0060] As a possible implementation manner, the distance between the frequency selective surface 112 and the peak position of the electric field pattern of the second antenna 140 is greater than or equal to the electrical length of one-eighth of π of the electromagnetic wave based on the second frequency band; or the distance between the frequency selective surface 112 and the peak position of the current pattern of the second antenna 140 is greater than or equal to the electrical length of one-eighth of π of the electromagnetic wave based on the second frequency band.

[0061] Specifically, the distance between the frequency selective surface 112 and the peak position of the electric field pattern of the second antenna 140 is greater than or equal to the electrical length of one-eighth of π of the electromagnetic wave based on the second frequency band, thereby ensuring the power and efficiency of the second antenna 140. The distance between the frequency selective surface 112 and the peak position of the current pattern of the second antenna 140 is greater than or equal to the electrical length of one-eighth of π of the electromagnetic wave based on the second frequency band, thereby ensuring the power and efficiency of the second antenna 140.

[0062] Wherein, the distance between the frequency selective surface 112 and the peak position of the electric field pattern of the second antenna 140 may be equal to the electrical length of one-eighth of π, one-sixth of π, one-fourth of π, etc. of the electromagnetic wave based on the second frequency band.

[0063] Such as Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 And Figure 6 As shown, as a possible implementation manner, the frequency selective surface 112 includes: a passive resonant structure 114, and the passive resonant structure 114 is periodically distributed on the device main body 110; a flexible circuit board 116, which is arranged on the passive resonant structure 114, and the flexible circuit board 116 is used to reduce the electrical length of the passive resonant structure 114; wherein, a resonant circuit 118 is provided on the flexible circuit board 116, and the resonant circuit 118 is used to reduce the electrical length of the passive resonant structure 114.

[0064] Specifically, the frequency selective surface 112 includes a passive resonant structure 114, which is periodically distributed on the device body 110. By periodically distributing the passive resonant structure 114, a band-stop effect for the first frequency is achieved.

[0065] Among them, the passive resonant structure 114 can be in the shape of a U shape, a city wall shape, a snake shape, etc., as long as the passive resonant structure 114 can form a band-stop reflection effect on the first frequency band. Those skilled in the art can think of other similar passive resonant structures 114. That is, on the device body 110 near the first antenna 130, a frequency selective surface 112 formed by periodically arranging passive resonant structures 114 that resonate in the first frequency band is provided.

[0066] The frequency selective surface 112 further includes a flexible circuit board 116, which is disposed on the passive resonant structure 114. The flexible circuit board 116 is used to reduce the electrical length of the passive resonant structure 114, reduce the miniaturization of the passive resonant structure 114, and reduce the occupied area of the frequency selective surface 112.

[0067] That is, a flexible circuit board 116 is attached to the frequency selective surface 112, and the solder joints of the flexible circuit board 116 are welded to the passive resonant structure 114 by means of ultrasonic welding or the like.

[0068] The flexible circuit board 116 has a resonant circuit 118, which is used to reduce the electrical length of the passive resonant structure 114, realize the miniaturization of the passive resonant structure 114, and reduce the occupied area of the frequency selective surface 112.

[0069] Among them, a resonant circuit 118 is mounted on the flexible circuit board 116, and together with the passive resonant structure 114, a loop circuit is formed. The inductance value and capacitance value of the resonant circuit 118 are determined such that the resonant circuit 118 and the passive resonant structure 114 resonate together in the first frequency band of the first antenna 130. Through the compensation of the resonant circuit 118, the electrical length required for the passive resonant structure 114 to resonate in the first frequency band can be effectively reduced, thereby realizing the miniaturization of the passive resonant structure 114. Among them, the resonant circuit 118 can be an LC resonant circuit 118, that is, the resonant circuit 118 includes a capacitor and an inductor.

[0070] As Figure 6 shown, as a possible implementation manner, the passive resonant structure 114 includes a first end 1142 and a second end 1144, the first end 1142 and the second end 1144 are separated, and the resonant circuit 118 is connected to the first end 1142 and the second end 1144.

[0071] Specifically, the passive resonant structure 114 includes a phase-separated first end 1142 and a second end 1144. The resonant circuit 118 connects the first end 1142 and the second end 1144 such that the passive resonant structure 114 and the resonant circuit 118 form a loop circuit, thereby adjusting the electrical length of the passive resonant structure 114 through the capacitance or inductance of the resonant circuit 118.

[0072] As Figure 5 and Figure 7 shown, as a possible implementation, the flexible circuit board 116 further has a tunable circuit 120 for adjusting the resonant frequency of the passive resonant structure 114.

[0073] Specifically, the flexible circuit board 116 further has a tunable circuit 120 for adjusting the resonant frequency of the passive resonant structure 114, so that the resonant frequency of the loop circuit formed by the passive resonant structure 114 and the flexible circuit board 116 is the same as the first frequency, thereby providing a higher gain for the directivity of the antenna.

[0074] The flexible circuit board 116 is also mounted with a tunable circuit 120, which includes a varactor or a variable capacitor such as a Micro Electro Mechanical System (MEMS).

[0075] The power supply and control lines of the tunable circuit 120 are arranged on the flexible circuit board 116 structure in a manner similar to that of a touch screen. According to the current operating frequency of the first antenna 130, the electronic device 100 can change the resonant frequency of the loop circuit formed by the resonant circuit 118 and the passive resonant structure 114 by uniformly or differentially adjusting the tunable circuit 120, so that the resonant frequency is the same as the operating frequency of the first antenna 130, thereby providing a higher gain for the directivity of the antenna.

[0076] In this application, a frequency selective surface 112 is provided on the device body 110 of the electronic device 100. The frequency selective surface 112 has a passive resonant structure 114, and the miniaturization of the passive resonant structure 114 is achieved through the resonant circuit 118, so that a higher gain for the directivity of the first antenna 130 can be obtained.

[0077] Realized through the tunable circuit 120, the frequency selective surface 112 can be instantaneously and controllably changed as the operating frequency band of the first antenna 130 jumps. In this way, within the limited internal space of the electronic device 100, a high-gain directivity for the entire frequency band of the first antenna 130 can be obtained.

[0078] Among them, the tunable circuit 120 can be connected to the passive resonant structure 114.

[0079] As a possible implementation, the polarization direction of the passive resonant structure 114 is consistent with the polarization direction of the first antenna 130, thereby enhancing the shaping effect of the frequency selective surface 112 on the directivity of the first antenna 130.

[0080] As a possible implementation, the passive resonant structure 114 can be disposed on the device body 110 by etching, and the flexible circuit board 116 is welded to the passive resonant structure 114 by methods such as ultrasonic welding or laser welding.

[0081] As Figure 1 , Figure 2 and Figure 3 shown, as a possible implementation, the device body 110 includes: a frame 122; a battery cover 124 disposed on the frame 122; a circuit board bracket 126 disposed between the frame 122 and the battery cover 124; wherein, the frequency selective surface 112 is disposed on at least one of the battery cover 124 and the circuit board bracket 126.

[0082] Specifically, the device body 110 includes a frame 122, a battery cover 124, and a circuit board bracket 126. The battery cover 124 is disposed on the frame 122, and the circuit board bracket 126 is disposed between the frame 122 and the battery cover 124. The frequency selective surface 112 can be disposed on the battery cover 124, or the frequency selective surface 112 can be disposed on the circuit board bracket 126, or the frequency selective surface 112 can be disposed on both the battery cover 124 and the circuit board bracket 126, so that the frequency selective surface 112 can be at a certain distance from the first antenna 130 and the second antenna 140, reducing the influence of the frequency selective surface 112 on the efficiency of the first antenna 130 and the second antenna 140.

[0083] Among them, the first antenna 130 can be a frame antenna, a laser direct structuring (LDS) antenna, a flexible printed circuit (FPC) antenna, or the like.

[0084] As Figure 2 and Figure 3 shown, as a possible implementation, the device body 110 further includes: a circuit board 128 disposed on the frame 122, and the frequency selective surface 112 is at least located between the circuit board 128 and the first antenna 130.

[0085] Specifically, the device body 110 further includes a circuit board 128 disposed on the frame 122, and the frequency selective surface 112 is at least located between the circuit board 128 and the first antenna 130, thereby reducing the influence of the ground of the circuit board 128 on the first antenna 130 and enhancing the directivity of the first antenna 130.

[0086] As shown in Figure 1 and Figure 3 For example, as a possible implementation, the first side 132 of the first antenna 130 faces the outside of the device body 110, and the frequency selective surface 112 is at least located on the second side 134 of the first antenna 130, and the frequency selective surface 112 is at most located on the second side 134, the third side 136, and the fourth side 138 of the first antenna 130; wherein, the second side 134 is the side facing away from the first side 132, and the third side 136 and the fourth side 138 are the two sides adjacent to the first side 132.

[0087] Specifically, the first antenna 130 has a first side 132, a second side 134, a third side 136, and a fourth side 138. The first side 132 and the second side 134 are the two opposite sides of the first antenna 130, and the third side 136 and the fourth side 138 are the two opposite sides of the first antenna 130. The third side 136 and the fourth side 138 are the two sides adjacent to the first side 132. Among them, the first side 132 faces the outside of the device body 110, and the frequency selective surface 112 is at least located on the second side 134 of the first antenna 130. The frequency selective surface 112 is at most located on the second side 134, the third side 136, and the fourth side 138 of the first antenna 130, so that the electromagnetic wave emitted by the first antenna 130 can be reflected out of the electronic device 100 through the first side 132, thereby ensuring the directivity of the first antenna 130.

[0088] Among them, the first side 132 faces the top of the device body 110, and the frequency selective surface 112 is arranged on the third side 136 and the fourth side 138 of the first antenna 130 to limit the radiation current of the first antenna 130, thereby forcing the radiation directivity of the first antenna 130 to point to the upper hemisphere of the electronic device 100.

[0089] The electronic device 100 can be a terminal or other devices other than the electronic device 100. Exemplarily, the electronic device 100 can be a mobile phone, a tablet computer, a notebook computer, a handheld computer, a music playing device, a private network communication terminal device (such as a walkie-talkie), a mobile Internet device (MID), an augmented reality / virtual reality / mixed reality device, a robot, a wearable device, an ultra-mobile personal computer (UMPC), a netbook, or a personal digital assistant (PDA), etc. The embodiments of the present application do not make specific limitations.

[0090] In the description of this specification, the description referring to terms such as "one embodiment" or "specific embodiment" means that the specific features, structures, materials or characteristics described in connection with that embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.

[0091] Although the embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. An electronic device, characterized in that: include: a device body having a frequency selective surface thereon; A first antenna, arranged on the device body, the first antenna operates in a first frequency band; The frequency selective surface is located on the side of the first antenna, and the frequency selective surface is in a band-stop state for the first frequency band.

2. The electronic device according to claim 1, characterized in that: Also includes: A second antenna is arranged on the device body, and the second antenna operates in a second frequency band; The frequency selective surface is in a bandpass state for the second frequency band.

3. The electronic device according to claim 2, characterized in that: The first frequency band is a satellite communication frequency band; The second frequency band is at least one of a mobile communication frequency band, a proximity communication frequency band, a Bluetooth communication frequency band, and a wireless local area network communication frequency band.

4. The electronic device according to claim 2, characterized in that: The frequency selective surface avoids the peak position of the electric field pattern of the second antenna; or The frequency selective surface avoids a peak position of a current pattern of the second antenna.

5. The electronic device according to any one of claims 1 to 4, characterized in that: The frequency selective surface comprises: Passive resonant structures, the passive resonant structures are periodically distributed on the device body; A flexible circuit board is arranged on the passive resonant structure; Wherein, the flexible circuit board has a resonant circuit, and the resonant circuit is used to reduce the electrical length of the passive resonant structure.

6. The electronic device according to claim 5, characterized in that: The passive resonant structure includes a first end and a second end, the first end and the second end are separated, and the resonant circuit connects the first end and the second end.

7. The electronic device according to claim 5, characterized in that: The flexible circuit board is also provided with an electrical adjustment circuit, and the electrical adjustment circuit is used to adjust the resonant frequency of the passive resonant structure.

8. The electronic device according to claim 5, characterized in that: The polarization direction of the passive resonant structure is consistent with the polarization direction of the first antenna.

9. The electronic device according to any one of claims 1 to 4, characterized in that: The device body comprises: Frame; A battery cover, arranged on the frame; A circuit board bracket, arranged between the frame and the battery cover; Wherein, the frequency selection surface is arranged on at least one of the battery cover and the circuit board bracket.

10. The electronic device according to any one of claims 1 to 4, characterized in that: The first side of the first antenna faces the outside of the device body, the frequency selective surface is located at least on the second side of the first antenna, and the frequency selective surface is located at most on the second side, the third side, and the fourth side of the first antenna; The second side is a side away from the first side, and the third side and the fourth side are two sides adjacent to the first side.

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