Antenna and electronic device

Abstract

The application discloses an antenna and an electronic device, the antenna comprises a substrate, the substrate comprises a feeding point and a grounding point; an antenna radiator, the radiator comprises two radiation units which are electrically connected to each other, each radiation unit comprises a feeding support part and a grounding support part, each radiation unit is fixedly installed on the substrate through the feeding support part and is electrically connected to the feeding point of the substrate, and is fixedly installed on the substrate through the grounding support part and is electrically connected to the grounding point of the substrate.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of antennas, in particular to an antenna and an electronic device. BACKGROUND

[0002] The single-feed antenna only circulates at the resonance of a single frequency, and when the carrier wave deviates from the resonance of the single frequency, the antenna will increasingly appear on the antenna. For example, due to insufficient bandwidth, when the Wi-Fi antenna and the GPS antenna simultaneously receive signals, the antenna will also receive multipath signals, which are also elliptical, causing interference to the antenna, inaccuracy in statistics, and a decrease in the accuracy of the antenna. SUMMARY

[0003] The main purpose of the present application is to provide an antenna and an electronic device, which aims to improve the accuracy of the antenna.

[0004] To achieve the above purpose, the present application provides an antenna, which comprises:

[0005] a substrate, the substrate comprising a feed point and a grounding point;

[0006] an antenna radiator, the radiator comprising two radiation units electrically connected to each other, each radiation unit comprising a feed support part and a grounding support part, each radiation unit being fixedly installed on the substrate through the feed support part and electrically connected to the feed point of the substrate, and being fixedly installed on the substrate through the grounding support part and electrically connected to the grounding point of the substrate.

[0007] Optionally, each radiation unit further comprises:

[0008] an antenna radiator branch, the antenna radiator branch being arranged in a direction perpendicular to the substrate.

[0009] Optionally, the antenna radiator branch is arranged in a spaced manner with the substrate.

[0010] Optionally, the substrate is hollow at the position corresponding to the antenna radiator branch;

[0011] Alternatively, the substrate is provided with a groove at the position corresponding to the antenna radiator branch.

[0012] Optionally, each radiation unit is provided with at least one gap at the position corresponding to the antenna radiator branch.

[0013] Optionally, the two radiation units each comprise a radiation body, and the radiation body of one of the radiation units is arranged in a direction perpendicular to the substrate.

[0014] Another radiation body of the radiation unit is arranged along a direction parallel to the substrate.

[0015] Optionally, each radiation body is provided with an opening.

[0016] Optionally, the working frequency band of one of the two radiation units includes 2400-2500 MHz and 5150-5850 MHz.

[0017] The working frequency band of another radiation unit includes 6-9 GHz.

[0018] Optionally, the substrate includes:

[0019] The medium substrate is provided with conductive layers on both sides, and the conductive layers on both sides are electrically connected through a through hole.

[0020] The application further provides an electronic device comprising the antenna.

[0021] The application sets the antenna radiation bodies as two radiation units electrically connected to each other, each radiation unit includes a feeding support part and a grounding support part, each radiation unit is fixedly installed on the substrate through the feeding support part and electrically connected to the feeding point of the substrate, and is fixedly installed on the substrate through the grounding support part and electrically connected to the grounding point of the substrate. Compared with a single feeding antenna, it is difficult to meet the working bandwidth, and even if it is met, it cannot guarantee that the antenna is excluded from the multipath signal during operation. The application realizes the frequency band and bandwidth required by the entire antenna through a reasonable wiring mode, and switches the antenna frequency band relative to the physical switch. The application can complete adaptive switching without other external switches, and can greatly improve the cycle response of the entire bandwidth. Compared with a microstrip antenna, the performance gain of the antenna can reach more than 10 dBi, and the transmission distance is farther. The antenna has two forward-oriented dipoles, and when the signals of each dipole are combined into one, the full-bandwidth cycle response of the entire antenna can be increased after a 90-degree phase shift of a signal, and the exclusion of the multipath signal can be greatly improved, so the precision is higher than that of a single feeding antenna. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the application, and for those skilled in the art, other drawings can be obtained from the structures shown in the drawings without creative labor.

[0023] Figure 1Structure diagram of an embodiment of the antenna of the present application;

[0024] Figure 2 Structure diagram of another view of the antenna of the present application;

[0025] Figure 3 Structure diagram of an embodiment of the antenna of the present application; Figure 1 Structure diagram of an embodiment of the antenna of the present application;

[0026] Figure 4 Structure diagram of another view of the antenna of the present application; Figure 1 Structure diagram of another view of the antenna of the present application;

[0027] Figure 5 Reflection loss curve of the antenna of the present application;

[0028] Figure 6 Performance curve of the double-fed antenna of the present application.

[0029] Explanation of reference numerals:

[0030] Reference Name Reference Name 100 Substrate 221 Second feed support 200 Antenna radiator 222 Second ground support 210 First radiating element 230 First antenna radiator branch 211 First feed support 240 Second antenna radiator branch 212 First ground support 250 Relief structure 220 Second radiating element

[0031] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without any creative work under the premise that the specific working conditions are changed, should fall within the protection scope of the present application.

[0033] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between the components in a certain specific posture (as shown in the drawings). If the specific posture is changed, the directional indications will also change accordingly.

[0034] In addition, if the description of "first", "second" and the like is involved in the embodiments of the present application, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of various embodiments can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor within the protection scope required by the present application.

[0035] The term "and / or" herein is only a description of the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent three cases of A alone, A and B together, and B alone. In addition, the character " / " herein generally represents that the front and rear associated objects are in an "or" relationship.

[0036] The present application provides an antenna applied to an electronic device.

[0037] Referring to Figure 1 In an embodiment of the present application, the antenna comprises:

[0038] A substrate 100, the substrate 100 comprising a feeding point and a grounding point;

[0039] An antenna radiator 200, the antenna radiator 200 comprising two radiation units electrically connected to each other, each of the radiation units comprising a feeding support part and a grounding support part, each of the radiation units being fixedly installed on the substrate 100 through the feeding support part and electrically connected to the feeding point of the substrate 100, and being fixedly installed on the substrate 100 through the grounding support part and electrically connected to the grounding point of the substrate 100.

[0040] In the embodiment, the two radiation units are a first radiation unit 210 and a second radiation unit 220, wherein the first radiation unit 210 is used to realize the WiFi antenna function, and the second radiation unit 220 is used to realize the UWB antenna function. The working frequency band of the first radiation unit 210 includes 2400-2500 MHz and 5150-5850 MHz. The working frequency band of the second radiation unit 220 includes 6-9 GHz. The two antenna radiation units can be integrally formed, that is, the antenna radiation body 200 can be an integral structure, and the shape of the two radiation units is formed by stamping, bending and other processes. Alternatively, the two separate radiation units are fixed and electrically connected by conductive glue, welding process and the like. Each radiation unit is provided with a feeding support part and a grounding support part. The feeding support part of the first radiation unit 210 is a first feeding support part 211, and the grounding support part of the first radiation unit 210 is a first grounding support part 212. The first radiation unit 210 is electrically connected to the feeding network arranged on the substrate 100 through the first feeding support part 211 to realize feeding, and the first feeding support part 211 is also used to fix and support the antenna radiation body 200, so that the antenna radiation body 200 is fixed on the substrate 100. The first radiation unit 210 is electrically connected to the grounding plate arranged on the substrate 100 through the first grounding support part 212 to realize grounding, and the first grounding support part 212 is also used to fix and support the antenna radiation body 200, so that the antenna radiation body 200 is fixed on the substrate 100. The feeding support part of the second radiation unit 220 is a second feeding support part 221, and the grounding support part of the second radiation unit 220 is a second grounding support part 222. The second radiation unit 220 is electrically connected to the feeding network arranged on the substrate 100 through the second feeding support part 221 to realize feeding, and the second feeding support part 221 is also used to fix and support the antenna radiation body 200, so that the antenna radiation body 200 is fixed on the substrate 100. The second radiation unit 220 is electrically connected to the grounding plate arranged on the substrate 100 through the second grounding support part 222 to realize grounding, and the second grounding support part 222 is also used to fix and support the antenna radiation body 200, so that the antenna radiation body 200 is fixed on the substrate 100.

[0041] The antenna radiator 200 can be made of metal materials such as copper, aluminum, steel, etc. The antenna radiator 200 can have a plate-like structure, and the outer contour of the antenna radiator 200 can be circular, square or polygonal. Of course, in other embodiments, the shape of the antenna radiator 200 can not be limited, as long as it can form a double-fed radiator. The feed support and the ground support can be used to fix and support the antenna radiator 200, and in this embodiment, conductive glue, solder, etc. can be used to fix the antenna radiator 200 on the substrate 100 and electrically connect it with the feed network, ground plate, etc. provided on the substrate 100 to access the feed signal. In this embodiment, the overall outer contour of the antenna radiator 200 is in the shape of a rectangular parallelepiped, and the size of the entire antenna radiator 200 is 15mm*9mm*6mm. The antenna radiator 200 can be realized by sheet metal, and through stamping, bending, cutting and other processes, the main body of the two radiation units, the feed support and the ground support, etc. are formed on the sheet metal. The two radiation units are integrally formed by profile, which is simple to manufacture and can effectively reduce the cost. Moreover, the integrally formed antenna radiator 200 can have a smaller thickness and be light in weight, which is conducive to mass production. In addition, the integrally formed antenna radiator 200 can reduce the welding points between the two radiation units, and the integrally formed antenna radiator 200 is easy to install, which is conducive to batch production and application. In an embodiment, the substrate 100 includes a dielectric substrate 100, and the two side surfaces of the dielectric substrate 100 are paved with conductive layers, and the conductive layers on the two side surfaces are electrically connected through a through hole.

[0042] In this embodiment, the substrate 100 can be a PCB board or a board material with a certain dielectric constant, such as epoxy, silicon oxide, etc. The thickness of the substrate 100 can be 0.7 mm, and the RF4 dielectric material can be used to realize the substrate 100. The dielectric plate body has a first side surface and a second side surface arranged oppositely. The first side surface and the second side surface are both provided with a conductive layer. The two conductive layers can be electrically connected through a metal via. The conductive layer can be made of copper or other non-metallic conductor materials. The conductive layer can be in the form of a patch arranged on the dielectric plate body, or can be a plated layer etched by photolithography. For example, the conductive layer can be formed on the two side surfaces of the dielectric plate body by a printed circuit wiring process. Specifically, the conductive layer can be formed on the dielectric plate body by copper cladding and etching. Alternatively, the conductive layer can be attached to the dielectric plate body or pressed onto the dielectric plate body by other processes. The conductive layer can be made of copper foil or other metal materials or non-metallic conductive materials. The thickness, size and shape of each layer of the dielectric plate body can be set according to the actual application product and application environment to meet different application requirements. In a specific embodiment, the shape of the dielectric plate body can be square, such as rectangular or square. The conductive layer can be used to set the ground plate and the feed network of the antenna. In this embodiment, the feed network can be realized by microstrip line, CPW (coplanar waveguide) line, etc. The feed network is arranged on the substrate 100 and can be located on the same side of the antenna radiator 200, that is, on the same side of the antenna radiator 200, and the feed network can be directly connected to the antenna radiator 200 through circuit wiring, or the feed network can be located on the other side of the substrate 100, that is, the feed network and the antenna radiator 200 are arranged oppositely, and the feed network and the antenna radiator 200 are electrically connected through a metallized via. The feed network has at least two feed lines, which output a feed source to the antenna radiator 200 from the two feed support parts of the antenna radiator 200, so that the two feed lines are electrically connected to the two groups of antenna radiation units respectively, thereby exciting the antenna radiator 200. The structure of the feed network can be flexibly designed according to the position of the antenna radiation unit port and the shape, size and position of the antenna radiator 200. According to the different arrangement positions of the ground plate and the feed network, the fixing connection mode of the feed support part and the ground support part to the substrate 100 can also be different. For example, the feed support part and the ground support part can penetrate the substrate 100 and be fixedly and electrically connected to the conductive layer arranged on the side surface away from the antenna radiator 200, or the feed support part and the ground support part can be fixedly and electrically connected to the conductive layer arranged on the side surface close to the antenna radiator 200 through conductive glue. When the antenna is applied to electronic devices such as sound, VR, doorbell, camera, router, etc., the main board of these electronic devices can also be used to realize the antenna.

[0043] The antenna radiator 200 is arranged as two radiation units which are electrically connected to each other, each radiation unit comprises a feeding support part and a grounding support part, each radiation unit is fixedly installed on the substrate 100 through the feeding support part and is electrically connected to the feeding point of the substrate 100, and is fixedly installed on the substrate 100 through the grounding support part and is electrically connected to the grounding point of the substrate 100. Compared with a single-feed antenna, it is difficult to meet the working bandwidth of the single-feed antenna, and even if it is met, it cannot guarantee that the antenna is excluded from the multipath signal during operation. The antenna has two forward-oriented dipoles. When the signals of each dipole are combined into one, the full-bandwidth cycle response of the entire antenna can be increased after a 90-degree phase shift of a signal, and the exclusion of the multipath signal can be greatly improved. Therefore, the precision of the antenna is higher than that of the single-feed antenna. Through a reasonable wiring mode, the frequency band and bandwidth required by the entire antenna are realized. Compared with the antenna frequency band switching using a physical switch, the present application can complete adaptive switching without other external switches, and can greatly improve the cycle response of the entire bandwidth. Figure 5 As shown in Figure 5 FIG. 2 is a return loss curve S11 of the antenna, wherein 201 is the return loss of WiFi 2.4G & UWB, and 202 is the return loss of WiFi 5G. The abscissa is frequency / MHz, and the ordinate is S11 (dB). As shown in Figure 6 As shown in Figure 6 FIG. 3 is a performance curve Gain of the double-feed antenna, wherein the unit is dBi. Compared with a microstrip antenna, the performance gain of the antenna can reach more than 10 dBi, and the transmission distance is farther.

[0044] In an embodiment, each of the radiation units further comprises:

[0045] An antenna radiator branch is arranged in a direction perpendicular to the substrate 100.

[0046] In the embodiment, each radiation unit is provided with an antenna radiator branch, i.e., a first antenna radiator branch 230 and a second antenna radiator branch 240. The first antenna radiator branch 230 is used to control the branch of the Wi-Fi antenna, and the second antenna radiator branch 240 is used to control the branch of the UWB antenna. The two antenna radiator branches are oppositely arranged, and further, the second antenna radiator branch 240 is arranged at a position opposite to the first antenna radiator branch 230, i.e., the two antenna radiator branches are arranged in parallel. The first antenna radiator branch 230 is located on one side of the antenna radiator 200, and the second antenna radiator branch 240 is located on the other side of the antenna radiator 200. The shapes and lengths of the two antenna radiator branches are different, which can produce different resonant frequencies, i.e., the two antenna radiators 200 can produce radiation modes with different resonant frequencies, which is beneficial to widening the bandwidth of the double-feed antenna.

[0047] In an embodiment, the antenna radiator branch is arranged spaced apart from the substrate 100.

[0048] The substrate 100 is provided with a hollow structure corresponding to the position of the antenna radiator branch.

[0049] Alternatively, the substrate 100 is provided with a groove corresponding to the position of the antenna radiator branch.

[0050] In the embodiment, one side surface of the substrate 100 can be provided with a ground plate, which can be a metal ground plate or a ground plate made of other conductive materials, and the ground plate is a common ground for the entire antenna structure. The metal ground plate can be arranged on the two opposite surfaces of the substrate 100 with the antenna radiator 200, or can be arranged on the same surface as the antenna radiator 200, and the antenna radiator 200 and the ground plate are insulated. The antenna radiator branch and the substrate 100 are insulated to avoid direct contact between the antenna radiator branch and the ground plate. An avoiding structure 250 is arranged at the position corresponding to the antenna radiator branch to avoid direct contact between the metal ground plate and the antenna radiator branch. The avoiding structure 250 can be a through hole or a groove, which makes the metal ground plate and the antenna radiator branch not connected, and realizes the insulation between the metal ground plate and the antenna radiator 200.

[0051] In an embodiment, each of the radiation units is provided with at least one gap corresponding to the position of the antenna radiator branch.

[0052] The first antenna radiator branch 230 is arranged on one side close to the first feeding support part 211, and a gap is formed between the first antenna radiator branch 230 and the antenna radiator 200. The side of the antenna radiator 200 close to the feeding support part is located at one end of the entire antenna radiator 200, the first antenna radiator branch 230 is connected to the antenna radiator 200, and the first antenna radiator branch 230 is bent downward from the antenna radiator 200 to extend. The second antenna radiator branch 240 is arranged at one end away from the second feeding support part 221, and a long gap is formed between the second antenna radiator branch 240 and the antenna radiator 200. By providing the gap, the resonance of the first antenna radiator branch 230 can be increased, which is beneficial to widen the working bandwidth of the antenna and better meet the working mode requirements of the antenna frequency band.

[0053] In an embodiment, the two radiation units each include a radiation body, and the radiation body of one of the radiation units is arranged in a direction perpendicular to the substrate 100.

[0054] The radiation body of the other radiation unit is arranged in a direction parallel to the substrate 100.

[0055] Each radiation body is provided with an opening.

[0056] In the embodiment, the antenna radiation body 200 is provided with an opening in the central region and the edge region, through which the slot antenna radiation can be realized, the current path is constrained to a certain extent, the port isolation and impedance matching are improved, the equivalent current path of the edge of the antenna radiation body 200 can be effectively extended, the resonance mode of the radiation unit can be excited, and the working frequency band of the antenna can be expanded.

[0057] The application further provides an electronic device comprising the antenna.

[0058] The detailed structure of the antenna can refer to the above-mentioned embodiments, and will not be described here again; it can be understood that, since the above-mentioned antenna is used in the electronic device of the application, the embodiments of the electronic device of the application include all the technical solutions of all the embodiments of the above-mentioned antenna, and the technical effects achieved are also completely the same, and will not be described here again.

[0059] The electronic device can be a sound, a VR, a doorbell, a camera, a router, etc., in the embodiment, the electronic device is provided with an electric control assembly, the electric control assembly is provided with different functional modules according to different functions realized by the electronic device, for example, when the electronic device is a VR device, the electric control assembly includes a display module, an electric control board, a camera, a battery, a loudspeaker, a microphone, a wireless communication module, etc., wherein the wireless communication module in the electric control assembly can at least include a WIFI module, a UWB positioning module, etc., the wireless communication module is electrically connected with the above-mentioned antenna, so as to receive and return data through the antenna.

[0060] The above-mentioned is only the optional embodiment of the application, and does not limit the patent scope of the application, any equivalent structural transformation made according to the content of the specification and the drawings of the application, or direct / indirect application in other related technical fields under the inventive concept of the application is included in the patent protection scope of the application.

Claims

1. An antenna, characterized by The antenna comprises: a substrate comprising a feeding point and a grounding point; an antenna radiator comprising two radiation units electrically connected to each other, each of the radiation units comprising a feeding support part and a grounding support part, each of the radiation units being mounted on the substrate through the feeding support part and electrically connected to the feeding point of the substrate, and being mounted on the substrate through the grounding support part and electrically connected to the grounding point of the substrate; each of the radiation units further comprises: an antenna radiator branch arranged along a direction perpendicular to the substrate; the antenna radiator branches corresponding to the two radiation units are used to generate different resonances, so that the two corresponding antenna radiators generate radiation modes with different resonance frequencies; a position of the antenna radiator branch corresponding to each of the radiation units is provided with at least one notch; each of the radiation units comprises a radiation body, a radiation body of one of the radiation units is arranged along a direction perpendicular to the substrate; a radiation body of the other radiation unit is arranged along a direction parallel to the substrate; the antenna radiator branch is formed by bending and extending downward from the antenna radiator.

2. The antenna of claim 1, wherein The antenna radiator branch is arranged in a spaced manner with respect to the substrate.

3. The antenna of claim 2, wherein The substrate is provided with a hollow structure at a position corresponding to the antenna radiator branch. Alternatively, the substrate is provided with a groove at a position corresponding to the antenna radiator branch.

4. The antenna of claim 1, wherein Each of the radiation bodies is provided with an opening.

5. The antenna according to claim 1, wherein In the two radiation units, a working frequency band of one of the radiation units comprises 2400-2500 MHz and 5150-5850 MHz. A working frequency band of the other radiation unit comprises 6-9 GHz.

6. The antenna according to any one of claims 1 to 5, wherein The substrate comprises: a dielectric substrate, both sides of the dielectric substrate are provided with conductive layers, and the conductive layers on both sides are electrically connected through a through hole.

7. An electronic device, comprising: The antenna comprises the antenna according to any one of claims 1 to 6.

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