Antenna and electronic equipment

Abstract

The invention discloses an antenna and electronic equipment, and belongs to the technical field of communication. The antenna comprises a low-frequency structure and a high-frequency structure parasitic to the low-frequency structure. The first conductive layer and the second conductive layer of the low-frequency structure are opposite, spaced and electrically connected to form a resonant cavity for generating low-frequency resonance; the third conductive layer of the high-frequency structure is arranged between the first conductive layer and the second conductive layer, is separately arranged with the first conductive layer and the second conductive layer at intervals, and is electrically connected with the first conductive layer, and the feed component is used for exciting the third conductive layer to generate high-frequency resonance. According to the technical scheme, dual-frequency resonance of the antenna can be achieved, the gain of the antenna can be improved, the antenna can be arranged in the intelligent terminal, and therefore the structural reliability and the appearance attractiveness of the intelligent terminal can be improved.

Description

Technical Field

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

[0002] At present, smart terminals can communicate with mobile communication satellites through their configured satellite communication antennas. However, current satellite communication antennas are usually single-frequency resonant and have low gain, and current satellite communication antennas usually use helical antennas, which are cylindrical and difficult to be built into smart terminals, resulting in poor structural reliability and poor appearance of smart terminals. Summary of the invention

[0003] The main purpose of the present disclosure is to propose an antenna and an electronic device, aiming to achieve dual-frequency resonance of the antenna and improve the gain of the antenna, and to realize the built-in antenna in a smart terminal to improve the structural reliability and appearance of the smart terminal.

[0004] To achieve the above-mentioned purpose, an embodiment of the present disclosure provides an antenna, comprising a low-frequency structure and a high-frequency structure parasitic with the low-frequency structure; the low-frequency structure comprises a first conductive layer and a second conductive layer, the first conductive layer and the second conductive layer are opposite to each other and spaced apart to form a resonant cavity, and the first conductive layer is electrically connected to the second conductive layer, and the resonant cavity is used to generate low-frequency resonance; the high-frequency structure comprises a third conductive layer and a feeding component, the third conductive layer is arranged between the first conductive layer and the second conductive layer, and is spaced apart from the first conductive layer and the second conductive layer respectively, and is electrically connected to the first conductive layer, and the feeding component is used to excite the third conductive layer to generate high-frequency resonance.

[0005] To achieve the above objective, an embodiment of the present disclosure further provides an electronic device, which includes the antenna provided in the embodiment of the present disclosure.

[0006] The antenna proposed in the embodiment of the present disclosure, by setting a low-frequency structure including a first conductive layer and a second conductive layer, and the first conductive layer and the second conductive layer are arranged oppositely and spaced to form a resonant cavity, can generate low-frequency resonance with the help of the resonant cavity, and by setting a high-frequency structure including a third conductive layer and a feeding component, the third conductive layer is arranged between the first conductive layer and the second conductive layer, and is spaced from the first conductive layer and the second conductive layer respectively, and is electrically connected to the first conductive layer, and the third conductive layer is excited by the feeding component to generate high-frequency resonance. In this way, low-frequency resonance is generated with the help of the low-frequency structure, and high-frequency resonance is generated with the help of the high-frequency structure, so that the dual-frequency resonance of the antenna can be achieved. The dual-frequency resonance means that the antenna has a high efficiency at two resonant frequencies and a small reflection coefficient, and wireless communication can be performed, and by setting the high-frequency structure and the low-frequency structure to form a parasitic layer structure, the volume of the antenna can be reduced, the space occupied by the antenna can be reduced, and the structure of the antenna is compact, so that the antenna can be built-in in the smart terminal, so as to improve the structural reliability and appearance of the smart terminal.

[0007] The electronic device proposed in the embodiment of the present disclosure can achieve dual-frequency resonance of the antenna and improve the gain of the antenna with the help of the antenna proposed in the embodiment of the present disclosure, and can also realize the built-in antenna in the smart terminal to improve the structural reliability and appearance of the smart terminal. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a schematic diagram of the exploded structure of an antenna provided in the first embodiment of the present disclosure and a frame provided in the second embodiment of the present disclosure;

[0009] Figure 2 It is a schematic diagram of the exploded structure of another antenna provided in the first embodiment of the present disclosure and the frame provided in the second embodiment of the present disclosure;

[0010] Figure 3 yes Figure 2 A schematic diagram of the three-dimensional structure of the antenna and frame combination in one direction;

[0011] Figure 4 yes Figure 2 A schematic diagram of the top view of the antenna shown;

[0012] Figure 5 yes Figure 2 A schematic diagram of the three-dimensional structure of the antenna and frame combination in another direction;

[0013] Figure 6 is a schematic diagram of the three-dimensional structure of the first conductive layer and the third conductive layer provided in the first embodiment of the present disclosure;

[0014] Figure 7 is a schematic diagram of the three-dimensional structure of the feeding component provided in the first embodiment of the present disclosure;

[0015] Figure 8 yes Figure 1 The front view of the antenna shown;

[0016] Fig. 9 yes Figure 2 The front view of the antenna shown;

[0017] Fig.10 is an exploded structural diagram of an electronic device provided in Embodiment 2 of the present disclosure;

[0018] Fig.11 is a parameter diagram of |S11| of the antenna provided in the first embodiment of the present disclosure;

[0019] Fig.12 is the E-plane radiation pattern of the antenna provided in the first embodiment of the present disclosure at 2 GHz;

[0020] Fig.13 is the E-plane radiation pattern of the antenna provided in the first embodiment of the present disclosure at 2.2 GHz;

[0021] Description of reference numerals:

[0022] 1-first conductive layer; 2-second conductive layer; 3-third conductive layer; 31-conductive layer portion; 32-conductive connecting portion; 4-feeding component; 41-feeding element; 42-coupling element; 5-resonant cavity; 51-first sub-cavity; 52-second sub-cavity; 6-electrical connecting element; 7-middle dielectric layer; 101-back plate; 102-circuit board; 103-frame; 104-screen; 105-front transparent cover plate. DETAILED DESCRIPTION

[0023] It should be understood that the specific embodiments described herein are only used to explain the present disclosure, and are not used to limit the present disclosure.

[0024] In the subsequent description, the use of suffixes such as "structure", "module", "component" or "unit" to represent elements is only to facilitate the description of the embodiments of the present disclosure, and has no specific meaning. Therefore, "structure", "module", "component" or "unit" can be used in a mixed manner.

[0025] In order to enable those skilled in the art to better understand the antenna and electronic device proposed by the technical solution of the present disclosure, the following first introduces the existing antenna and electronic device. On August 6, 2016, my country's first geosynchronous orbit mobile communication satellite Tiantong-1 01 was successfully launched on the Long March 3B carrier rocket. As of now, my country has 3 satellites participating in the Tiantong service, which will form a mobile communication network together with the ground mobile communication system to provide voice and data communication support for various handheld and small mobile terminals in my country's territory and surrounding sea areas. Satellite communication is a communication method based on microwaves. It uses satellites as communication transfer stations to conduct wireless communication between multiple devices on the ground to achieve comprehensive coverage of ground communication equipment. The satellite communication system can include a satellite terminal, a ground terminal and a client terminal, among which the most common applications of the client terminal in life include other smart device terminals such as walkie-talkies, mobile phones, and tablets. The satellite communication system can enable wireless electronic devices, such as computers, mobile phones, etc., to communicate with satellites for navigation systems or emergency communications. As terminal electronic devices develop towards becoming thinner, lighter and more complex, the space left for antennas in electronic devices is getting smaller and smaller, so it is necessary to design antennas with simple structure, miniaturization and high gain to be integrated with electronic devices. However, current satellite communication antennas are usually single-frequency resonant and have low gain, and current satellite communication antennas usually use helical antennas, which are cylindrical and difficult to be built into smart terminals, resulting in poor structural reliability and poor appearance of smart terminals.

[0026] The antenna and electronic device proposed in the present disclosure are intended to achieve dual-frequency resonance of the antenna and improve the gain of the antenna, and to realize the built-in antenna in the smart terminal to improve the structural reliability and appearance of the smart terminal. The embodiments of the antenna and electronic device provided by the present disclosure are described in detail below in conjunction with the accompanying drawings.

[0027] Embodiment 1

[0028] like Figure 1-Figure 9 As shown, the first embodiment of the present disclosure proposes an antenna, which includes a low-frequency structure and a high-frequency structure parasitic with the low-frequency structure; the low-frequency structure includes a first conductive layer 1 and a second conductive layer 2, the first conductive layer 1 and the second conductive layer 2 are opposite to each other and are spaced apart to form a resonant cavity 5, and the first conductive layer 1 is electrically connected to the second conductive layer 2, and the resonant cavity 5 is used to generate low-frequency resonance; the high-frequency structure includes a third conductive layer 3 and a feeding component 4, the third conductive layer 3 is arranged between the first conductive layer 1 and the second conductive layer 2, and is spaced apart from the first conductive layer 1 and the second conductive layer 2 respectively, and is electrically connected to the first conductive layer 1, and the feeding component 4 is used to excite the third conductive layer 3 to generate high-frequency resonance.

[0029] Based on this, the antenna proposed in the first embodiment of the present disclosure, by setting a low-frequency structure including a first conductive layer 1 and a second conductive layer 2, and the first conductive layer 1 and the second conductive layer 2 are arranged oppositely and spaced to form a resonant cavity 5, low-frequency resonance can be generated by means of the resonant cavity 5, and by setting a high-frequency structure including a third conductive layer 3 and a feeding component 4, the third conductive layer 3 is arranged between the first conductive layer 1 and the second conductive layer 2, and is spaced from the first conductive layer 1 and the second conductive layer 2 respectively, and is electrically connected to the first conductive layer 1, and the third conductive layer 3 is excited by means of the feeding component 4 to generate high-frequency resonance. In this way, low-frequency resonance is generated by means of the low-frequency structure, and high-frequency resonance is generated by means of the high-frequency structure, so that the dual-frequency resonance of the antenna can be achieved. The dual-frequency resonance means that the antenna has a high efficiency at two resonant frequencies and a small reflection coefficient, and wireless communication can be performed, and by setting the high-frequency structure and the low-frequency structure to form a parasitic layer structure, the volume of the antenna can be reduced, the space occupied by the antenna can be reduced, and the structure of the antenna is compact, so that the antenna can be built-in in the smart terminal, so as to improve the structural reliability and appearance of the smart terminal.

[0030] Furthermore, by arranging the first conductive layer 1 and the second conductive layer 2 opposite to each other and at intervals to form a resonant cavity 5 and arranging the third conductive layer 3 between the first conductive layer 1 and the second conductive layer 2, the antenna can be used as a directional antenna, thereby improving the gain of the antenna.

[0031] In practical applications, antennas can be divided into directional antennas and omnidirectional antennas according to the shape of the far-field radiation pattern of the antenna. Generally, the maximum gain of a directional antenna is greater than the maximum gain of an omnidirectional antenna, and the communication distance of a directional antenna is greater than the communication distance of an omnidirectional antenna. Therefore, by placing the first conductive layer 1 and the second conductive layer 2 opposite to each other and at intervals to form a resonant cavity 5, and placing the third conductive layer 3 between the first conductive layer 1 and the second conductive layer 2, the antenna can be used as a directional antenna, thereby improving the gain of the antenna. Antennas can be divided into linearly polarized antennas and circularly polarized antennas according to the terminal trajectory of the far-field electric field vector of the antenna. Since the antenna size of the terminal electronic device is small, the terminal electronic device has higher requirements for the gain and beam width of the antenna than for the polarization of the antenna.

[0032] Optionally, the material of the first conductive layer 1 may include metal.

[0033] Optionally, the first conductive layer 1 may be in the shape of a sheet.

[0034] Optionally, the material of the second conductive layer 2 may include metal.

[0035] Optionally, the second conductive layer 2 may be in the shape of a sheet.

[0036] In the first embodiment of the present disclosure, the distance between the first conductive layer 1 and the second conductive layer 2 may be 0.01 wavelength to 0.25 wavelength, where the wavelength is the wave speed / the working resonant frequency of the antenna.

[0037] For example, the propagation speed of electromagnetic waves in a vacuum (i.e., the wave speed) is approximately equal to the speed of light, which is 3*108m / s. The working resonant frequencies of the antenna proposed in the embodiment of the present disclosure may include 2GHz and 2.2GHz. A lower working resonant frequency may be selected, and the wavelength is (3*108m / s) / 2GHz.

[0038] Optionally, the length of the first conductive layer 1 may be 0.2 wavelengths to 30 wavelengths.

[0039] Optionally, the width of the first conductive layer 1 may be 0.01 wavelength to 20 wavelength.

[0040] Optionally, the length of the second conductive layer 2 may be 0.2 wavelengths to 30 wavelengths.

[0041] Optionally, the width of the second conductive layer 2 may be 0.01 wavelength to 20 wavelength.

[0042] Optionally, the size of the first conductive layer 1 and the size of the second conductive layer 2 may be the same or different.

[0043] Optionally, the shape of the first conductive layer 1 and the shape of the second conductive layer 2 may be the same or different.

[0044] like Figure 1-Figure 5 , Figure 8 and Fig. 9 As shown, in the first embodiment of the present disclosure, the low-frequency structure may further include an electrical connector 6 , which is disposed between the first conductive layer 1 and the second conductive layer 2 , and the first conductive layer 1 and the second conductive layer 2 are electrically connected via the electrical connector 6 .

[0045] For example, Figure 8 and Fig. 9 As shown, the electrical connector 6 can be disposed in the resonant cavity 5 and can be electrically connected to the first conductive layer 1 and the second conductive layer 2 respectively, so that the first conductive layer 1 and the second conductive layer 2 are electrically connected through the electrical connector 6 .

[0046] In practical applications, the resonant frequency of the low-frequency resonance of the antenna can be adjusted by adjusting the spacing between the first conductive layer 1 and the second conductive layer 2 and the position of the electrical connector 6, and the resonant frequency of the high-frequency resonance of the antenna can be adjusted by adjusting the size and position of the third conductive layer 3, thereby realizing, adjusting and optimizing the resonant frequency of the dual-frequency resonance of the antenna.

[0047] Optionally, the material of the electrical connector 6 may include metal.

[0048] like Figure 8 and Fig. 9 As shown, in the first embodiment of the present disclosure, the electrical connector 6 can separate the resonant cavity 5 into a first sub-cavity 51 and a second sub-cavity 52 , and the high-frequency structure is disposed in the first sub-cavity 51 or in the second sub-cavity 52 .

[0049] For example, Figure 8 and Fig. 9 As shown, the portion of the resonant cavity 5 located on the left side of the electrical connector 6 (only the illustrated direction does not represent the actual direction) may be the first sub-cavity 51, and the portion of the resonant cavity 5 located on the right side of the electrical connector 6 (only the illustrated direction does not represent the actual direction) may be the second sub-cavity 52, and the high-frequency structure is arranged in the first sub-cavity 51. In practical applications, when the high-frequency structure is located in the first sub-cavity 51, setting other devices in the first sub-cavity 51 or changing the structure of the first sub-cavity 51 may affect the performance of the antenna, for example, it may cause the resonant frequency of the antenna to shift, while setting other devices in the second sub-cavity 52 or changing the structure of the second sub-cavity 52 will not affect the performance of the antenna. However, the high-frequency structure is not limited to being arranged in the first sub-cavity 51, and may also be arranged in the second sub-cavity 52. ​​When the high-frequency structure is located in the second sub-cavity 52, setting other devices in the second sub-cavity 52 or changing the structure of the second sub-cavity 52 may affect the performance of the antenna, for example, it may cause the resonant frequency of the antenna to shift, while setting other devices in the first sub-cavity 51 or changing the structure of the first sub-cavity 51 will not affect the performance of the antenna.

[0050] In the first embodiment of the present disclosure, the number of the electrical connectors 6 may be multiple, such as Figure 1-Figure 5 As shown, a plurality of electrical connectors 6 are arranged at intervals, and a side of each electrical connector 6 facing the first conductive layer 1 is electrically connected to the first conductive layer 1 , and a side facing the second conductive layer 2 is electrically connected to the second conductive layer 2 .

[0051] However, the number of electrical connectors 6 is not limited to one. For example, optionally, the number of electrical connectors 6 can also be one. When the number of electrical connectors 6 is one, the side of one electrical connector 6 facing the first conductive layer 1 can be electrically connected to the first conductive layer 1, and the side facing the second conductive layer 2 can be electrically connected to the second conductive layer 2, thereby realizing that the electrical connector 6 is electrically connected to the first conductive layer 1 and the second conductive layer 2, respectively.

[0052] Optionally, when the number of the electrical connector 6 is one, the electrical connector 6 may be in a sheet shape.

[0053] Optionally, when there are multiple electrical connectors 6, each electrical connector 6 can be columnar or block-shaped, and multiple electrical connectors 6 are arranged at intervals. The side of each columnar or block-shaped electrical connector 6 facing the first conductive layer 1 is electrically connected to the first conductive layer 1, and the side facing the second conductive layer 2 is electrically connected to the second conductive layer 2, thereby achieving that each electrical connector 6 is electrically connected to the first conductive layer 1 and the second conductive layer 2, respectively.

[0054] Optionally, when there are multiple electrical connectors 6, the multiple electrical connectors 6 can be arranged at intervals along an arc, a straight line or a curve, or the multiple electrical connectors 6 can be arranged at intervals at discrete points.

[0055] like Figure 8 and Fig. 9 As shown, optionally, the first conductive layer 1 and the second conductive layer 2 may be arranged in parallel, and the electrical connector 6 may be arranged perpendicular to the first conductive layer 1 and the second conductive layer 2, respectively.

[0056] like Figure 1-Figure 6 , 8 and Fig. 9 As shown, in the first embodiment of the present disclosure, the third conductive layer 3 may include a conductive layer portion 31 and a conductive connection portion 32. The conductive layer portion 31 is spaced apart from the first conductive layer 1 and the second conductive layer 2, respectively. The conductive connection portion 32 is electrically bent and connected to the conductive layer portion 31. The conductive layer portion 31 is electrically connected to the first conductive layer 1 through the conductive connection portion 32.

[0057] For example, Figure 8 and Fig. 9 As shown, the conductive layer portion 31 can be arranged in the resonant cavity 5, and can be respectively opposite to and spaced apart from the first conductive layer 1 and the second conductive layer 2, the conductive connecting portion 32 can be arranged in the resonant cavity 5, and electrically connected to the conductive layer portion 31, and bent relative to the conductive layer portion 31, and electrically connected to the first conductive layer 1, so that the conductive layer portion 31 and the first conductive layer 1 are electrically connected through the conductive connecting portion 32, and then the third conductive layer 3 and the first conductive layer 1 are electrically connected.

[0058] Optionally, the material of the conductive layer portion 31 may include metal.

[0059] Optionally, the conductive layer portion 31 may be in a sheet shape.

[0060] Optionally, the material of the conductive connection portion 32 may include metal.

[0061] Optionally, the length of the conductive layer portion 31 may be 0.1 wavelength to 2 wavelengths.

[0062] Optionally, the width of the conductive layer portion 31 may be 0.01 wavelength to 20 wavelength.

[0063] Optionally, the distance between the conductive layer portion 31 and the first conductive layer 1 may be 0.01 wavelength to 0.25 wavelength.

[0064] like Figure 8 and Fig. 9 As shown, in the first embodiment of the present disclosure, the conductive connection portion 32 may be electrically connected to one side of the conductive layer portion 31 and may be vertically disposed relative to the conductive layer portion 31 .

[0065] For example, Figure 8 and Fig. 9 As shown, the third conductive layer 3 may be in an inverted “L” shape. However, the third conductive layer 3 is not limited to the conductive connection portion 32 being electrically connected to one side of the conductive layer portion 31 . For example, the conductive layer connection portion may also be electrically connected to the middle of the conductive layer portion 31 .

[0066] like Figure 8 and Fig. 9 As shown, optionally, the conductive layer portion 31 can be arranged in parallel with the first conductive layer 1 and the second conductive layer 2 respectively, and the conductive connection portion 32 can be arranged perpendicular to the conductive layer portion 31 and the first conductive layer 1 respectively.

[0067] In the first embodiment of the present disclosure, at least a portion of the feeding component 4 may be located between the first conductive layer 1 and the second conductive layer 2 , and electrically connected to the second conductive layer 2 , and disposed corresponding to the third conductive layer 3 .

[0068] By making at least part of the feeding component 4 located between the first conductive layer 1 and the second conductive layer 2 and electrically connected to the second conductive layer 2 and arranged corresponding to the third conductive layer 3 , the feeding component 4 can be used to excite the third conductive layer 3 to generate high-frequency resonance.

[0069] like Figure 1 and Figure 8 As shown, in the first embodiment of the present disclosure, the feeding component 4 may include a feeding element 41, at least part of which is located between the first conductive layer 1 and the second conductive layer 2, the second conductive layer 2 and the third conductive layer 3 are electrically connected through the feeding element 41, and the feeding element 41 is used to directly excite the third conductive layer 3 to generate high-frequency resonance.

[0070] For example, Figure 8 As shown, the feeding element 41 can be directly electrically connected to the second conductive layer 2 and the third conductive layer 3 respectively, so that the third conductive layer 3 can be directly excited to generate high-frequency resonance by means of the feeding element 41 .

[0071] like Figure 2-Figure 5 , Figure 7 and Fig. 9As shown, in the first embodiment of the present disclosure, the feeding component 4 may include a feeding element 41 and a coupling element 42. At least a portion of the feeding element 41 is located between the first conductive layer 1 and the second conductive layer 2, and is electrically connected to the second conductive layer 2 and the coupling element 42, respectively. The coupling element 42 is located between the second conductive layer 2 and the third conductive layer 3, and is arranged relatively spaced from the third conductive layer 3. The coupling element 42 is used for coupling and exciting the third conductive layer 3 to produce high-frequency resonance.

[0072] For example, Fig. 9 As shown, the feeding element 41 can be directly electrically connected to the second conductive layer 2 and the coupling element 42 respectively, but not directly electrically connected to the third conductive layer 3. The coupling element 42 can be arranged in the resonant cavity 5 and located between the second conductive layer 2 and the third conductive layer 3, and respectively opposite to and spaced from the second conductive layer 2 and the third conductive layer 3, and electrically connected to the feeding element 41. In this way, the third conductive layer 3 can be coupled and excited to produce high-frequency resonance with the help of the coupling element 42. By coupling and exciting the third conductive layer 3 to produce high-frequency resonance, the working bandwidth of the antenna can be broadened.

[0073] In practical applications, the feeding element 41 may extend from the side of the second conductive layer 2 facing away from the first conductive layer 1 through the second conductive layer 2 to between the first conductive layer 1 and the second conductive layer 2. The feeding element 41 may partially protrude relative to the side of the second conductive layer 2 facing away from the first conductive layer 1, or may not protrude at all relative to the side of the second conductive layer 2 facing away from the first conductive layer 1.

[0074] Optionally, the feeding element 41 may include a feeding probe.

[0075] Optionally, the feeding element 41 may include a coaxial line, a microstrip line or a stripline.

[0076] Optionally, the material of the feeding element 41 may include metal.

[0077] Optionally, the material of the coupling member 42 may include metal.

[0078] Optionally, the coupling member 42 may be in the shape of a sheet.

[0079] Optionally, the coupling member 42 may be circular, square or polygonal in shape.

[0080] Optionally, the radial dimension of the feeding element 41 may be 0.001 wavelength to 1 wavelength.

[0081] Optionally, the axial dimension of the feeding element 41 may be 0.01 wavelength to 0.25 wavelength.

[0082] Optionally, the radial dimension of the coupling element 42 may be 0.05 wavelength to 1 wavelength.

[0083] Optionally, the distance between the feeding element 41 and the electrical connecting element 6 may be 0.01 wavelength to 20 wavelength.

[0084] like Figure 1 and Figure 2 As shown, in the first embodiment of the present disclosure, the antenna may further include an intermediate dielectric layer 7, which is disposed in the resonant cavity 5, and has a first surface and a second surface that are opposite to each other, the first conductive layer 1 is disposed on the first surface, and the second conductive layer 2 is disposed on the second surface.

[0085] In practical applications, the first conductive layer 1 can be printed on the first surface of the intermediate dielectric layer 7, and the second conductive layer 2 can be printed on the second surface of the intermediate dielectric layer 7. In this case, the distance between the first conductive layer 1 and the second conductive layer 2 (i.e., the height of the resonant cavity 5) can be the thickness of the intermediate dielectric layer 7, and the length of the feeding element 41 can be less than the thickness of the intermediate dielectric layer 7.

[0086] Optionally, a plurality of through holes may be provided in the intermediate dielectric layer 7 , and the plurality of electrical connectors 6 may pass through the plurality of through holes in a one-to-one correspondence.

[0087] Optionally, the intermediate dielectric layer 7 may be a mixture of one or more of FR-4 epoxy board, F4b board and Rogers 5880 board.

[0088] Optionally, the communication technologies that the antenna proposed in Embodiment 1 of the present disclosure can be applied to include but are not limited to satellite communication system communication technology, global positioning system communication technology, Beidou navigation system communication technology, Bluetooth communication system communication technology, wireless fidelity communication system communication technology, global mobile communication system communication technology, and 6G / 5G / 4G communication technology.

[0089] In practical applications, the antenna's |S11| parameter is the inverse of the return loss, and its unit is dB. Usually, if the return loss is greater than or equal to 10dB (that is, |S11| is less than or equal to –10dB), it is large enough to achieve communication. Fig.11 As shown, the |S11| parameters of the antenna proposed in the first embodiment of the present disclosure, wherein the |S11| of the antenna at 2 GHz is less than -15dB, and the |S11| at 2.2 GHz is less than -10dB. The bandwidth of the antenna at 2 GHz is 30 MHz, and the bandwidth at 2.2 GHz is 20 MHz. Therefore, the antenna proposed in the first embodiment of the present disclosure can achieve dual-frequency resonance and can cover two frequency bands of satellite communications.

[0090] like Fig.12 and Fig.13As shown, they are the E-plane radiation patterns of the antenna proposed in the first embodiment of the present disclosure at 2 GHz and 2.2 GHz, respectively. The antenna radiates vertically polarized waves at both 2 GHz and 2.2 GHz, and the cross-polarization ratio is greater than 20 dB. The maximum gain of the antenna at 2 GHz is 7.10 dB, and the maximum gain at 2.2 GHz is 7.14 dB. Compared with the traditional satellite communication antenna, the maximum gain of the antenna proposed in the first embodiment of the present disclosure is larger. The 3dB beam width of the antenna proposed in the first embodiment of the present disclosure is 48° at 2 GHz, and the 3dB beam width at 2.2 GHz is 45°. The 5dB beam width at 2 GHz is 109°, and the 5dB beam width at 2.2 GHz is 99°. Compared with the traditional satellite communication antenna, the antenna proposed in the first embodiment of the present disclosure has a larger gain and a longer communication distance.

[0091] Embodiment 2

[0092] like Figure 1-Figure 10 As shown, the second embodiment of the present disclosure provides an electronic device, which includes the antenna provided in the first embodiment of the present disclosure.

[0093] Based on this, the electronic device proposed in the second embodiment of the present disclosure can achieve dual-frequency resonance of the antenna and improve the gain of the antenna with the help of the antenna proposed in the first embodiment of the present disclosure, and can realize the integration of the antenna in the smart terminal to improve the structural reliability and appearance of the smart terminal.

[0094] like Fig.10 As shown, in the second embodiment of the present disclosure, the electronic device may further include a back plate 101 and a circuit board 102 (PCB), the back plate 101 and the circuit board 102 are arranged opposite to each other, and the antenna is arranged between the back plate 101 and the circuit board 102.

[0095] like Fig.10 As shown, in the second embodiment of the present disclosure, the electronic device may further include a frame 103, and the frame 103 is arranged around the antenna.

[0096] For example, the frame 103 may include a first side, a second side, a third side and a fourth side, and the first side, the second side, the third side and the fourth side are arranged opposite to each other in pairs. For example, the first side and the second side are arranged opposite to each other, and the first side and the second side are respectively arranged on opposite sides of the antenna, that is, the first side is arranged outside the first side of the antenna, and the second side is arranged outside the second side of the antenna, and the first side and the second side of the antenna are opposite sides of the antenna, and the third side and the fourth side are arranged opposite to each other, and the third side and the fourth side are respectively arranged on opposite sides of the antenna, that is, the third side is arranged outside the third side of the antenna, and the fourth side is arranged outside the fourth side of the antenna, and the third side and the fourth side of the antenna are opposite sides of the antenna.

[0097] Optionally, the material of the frame 103 may be metal or non-metal, or a mixture of the two.

[0098] Optionally, the frame 103 and the first conductive layer 1 may be in contact with each other or have a gap therebetween.

[0099] Optionally, the frame 103 and the second conductive layer 2 may be in contact with each other or have a gap therebetween.

[0100] Optionally, the length of the border 103 may be 0.5 wavelength to 30 wavelength.

[0101] Optionally, the width of the border 103 may be 0.01 wavelength to 20 wavelength.

[0102] Optionally, the height of the border 103 may be 0.01 wavelength to 5 wavelengths.

[0103] Optionally, the distance between the frame 103 and the first conductive layer 1 may be 0 wavelength to 10 wavelength.

[0104] Optionally, the distance between the frame 103 and the second conductive layer 2 may be 0 wavelength to 10 wavelength.

[0105] Optionally, the distances between the frame 103 and each side of the first conductive layer 1 may be the same or different.

[0106] Optionally, the distances between the frame 103 and each side of the second conductive layer 2 may be the same or different.

[0107] like Fig.10 As shown, optionally, the electronic device may also include a screen 104 and a front transparent cover plate 105, wherein the screen 104 is arranged on a side of the circuit board 102 away from the rear back plate 101 and is arranged opposite to the circuit board 102, and the front transparent cover plate 105 is arranged on a side of the screen 104 away from the circuit board 102 and is arranged opposite to the screen 104.

[0108] Optionally, the front transparent cover plate 105 may include a glass cover plate.

[0109] Optionally, the frame 103 may also be arranged around the circuit board 102 and the screen 104 .

[0110] Optionally, the electronic device may also include a battery, a camera, a charging structure, and an earpiece.

[0111] Optionally, the frame 103 may have an opening, a groove, or a slit.

[0112] Optionally, the electronic device proposed in Embodiment 2 of the present disclosure may be, but is not limited to, a mobile phone, a tablet, a computer, a smart watch, a smart glasses, a wireless router, a television, a smart refrigerator, a vehicle-mounted radar, a vehicle-mounted terminal, a smart bicycle, and a smart home appliance.

[0113] Optionally, the communication technologies that can be used by the electronic device proposed in Embodiment 2 of the present disclosure include but are not limited to satellite communication system communication technology, global positioning system communication technology, Beidou navigation system communication technology, Bluetooth communication system communication technology, wireless fidelity communication system communication technology, global mobile communication system communication technology, and 6G / 5G / 4G communication technology.

[0114] In summary, the antenna and electronic device proposed in the embodiments of the present disclosure can achieve dual-frequency resonance of the antenna and improve the gain of the antenna, and can realize the integration of the antenna in a smart terminal to improve the structural reliability and appearance of the smart terminal.

[0115] The preferred embodiments of the present disclosure are described above with reference to the accompanying drawings, but the scope of the present disclosure is not limited thereby. Any modification, equivalent substitution and improvement made by those skilled in the art without departing from the scope and essence of the present disclosure shall be within the scope of the present disclosure.

Claims

1. An antenna, characterized in that: comprising a low frequency structure and a high frequency structure parasitic with the low frequency structure; The low-frequency structure comprises a first conductive layer and a second conductive layer, the first conductive layer and the second conductive layer are opposite to each other and spaced apart to form a resonant cavity, and the first conductive layer and the second conductive layer are electrically connected, and the resonant cavity is used to generate low-frequency resonance; The high-frequency structure includes a third conductive layer and a feeding component. The third conductive layer is arranged between the first conductive layer and the second conductive layer, and is spaced apart from the first conductive layer and the second conductive layer respectively, and is electrically connected to the first conductive layer. The feeding component is used to excite the third conductive layer to generate high-frequency resonance.

2. The antenna according to claim 1, characterized in that The low-frequency structure further includes an electrical connector, which is disposed between the first conductive layer and the second conductive layer, and the first conductive layer is electrically connected to the second conductive layer through the electrical connector.

3. The antenna according to claim 2, characterized in that: The electrical connector divides the resonant cavity into a first sub-cavity and a second sub-cavity, and the high-frequency structure is arranged in the first sub-cavity or the second sub-cavity.

4. The antenna according to claim 2, characterized in that: There are multiple electrical connectors, which are arranged at intervals. The side of each electrical connector facing the first conductive layer is electrically connected to the first conductive layer, and the side facing the second conductive layer is electrically connected to the second conductive layer.

5. The antenna according to claim 1, characterized in that The third conductive layer includes a conductive layer portion and a conductive connection portion, the conductive layer portion is spaced apart from the first conductive layer and the second conductive layer respectively, the conductive connection portion is electrically bent and connected to the conductive layer portion, and the conductive layer portion is electrically connected to the first conductive layer through the conductive connection portion.

6. The antenna according to claim 5, characterized in that The conductive connection portion is electrically connected to one side of the conductive layer portion and is vertically disposed relative to the conductive layer portion.

7. The antenna according to claim 1, characterized in that: The feeding component includes a feeding element, at least part of which is located between the first conductive layer and the second conductive layer, the second conductive layer is electrically connected to the third conductive layer through the feeding element, and the feeding element is used to directly excite the third conductive layer to generate the high-frequency resonance.

8. The antenna according to claim 1, characterized in that: The feeding component includes a feeding element and a coupling element. At least a portion of the feeding element is located between the first conductive layer and the second conductive layer, and is electrically connected to the second conductive layer and the coupling element respectively. The coupling element is located between the second conductive layer and the third conductive layer, and is arranged relatively spaced from the third conductive layer. The coupling element is used for coupling and exciting the third conductive layer to generate the high-frequency resonance.

9. The antenna according to claim 1, characterized in that: The antenna further includes an intermediate dielectric layer, which is disposed in the resonant cavity and has a first surface and a second surface that are opposite to each other, the first conductive layer is disposed on the first surface, and the second conductive layer is disposed on the second surface.

10. The antenna according to claim 1, characterized in that: The distance between the first conductive layer and the second conductive layer is 0.01 wavelength to 0.25 wavelength, where the wavelength is the speed of light / the working resonant frequency of the antenna.

11. An electronic device, characterized in that: Comprising the antenna as described in any one of claims 1-9.

12. The electronic device according to claim 11, characterized in that: The electronic device further comprises a back plate and a circuit board, wherein the back plate and the circuit board are arranged opposite to each other, and the antenna is arranged between the back plate and the circuit board.

13. The electronic device according to claim 11, characterized in that: The electronic device further includes a frame, and the frame is arranged around the antenna.

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