A close-range anti-crosstalk directional radio frequency antenna

Abstract

The utility model discloses a kind of close-range anti-interference directional radio frequency antennas, including antenna substrate, the upper surface of antenna substrate is fixedly installed by shielding structure, the lower surface of antenna substrate is fixedly installed with metal reflection backplate, the shielding structure includes wave-absorbing layer, baffle, the inner surface of baffle is embedded and installed with wave-absorbing layer, the antenna substrate includes radiating unit, substrate main body, the upper surface of substrate main body is equipped with radiating unit, the baffle is fixedly installed on the upper surface of substrate main body, and located at the periphery of radiating unit, the metal reflection backplate includes fixed plate, backplate main body, mounting hole, weight-reducing groove, storage groove, connecting shaft.The utility model said a kind of close-range anti-interference directional radio frequency antennas, signal can be concentrated radiation, transverse and downward signal can be shielded, reduce the rate of interreading, can reduce occupied area when transporting.

Description

Technical Field

[0001] This utility model relates to the field of directional radio frequency antennas, and in particular to a short-range anti-crosstalk directional radio frequency antenna. Background Technology

[0002] A directional radio frequency antenna is a type of radio frequency signal transmission device that radiates / receives signals with a clear direction. Its core function is to concentrate radio frequency energy in a specific spatial area (rather than omnidirectional diffusion) while suppressing signal leakage or interference in non-target directions, thereby improving signal transmission efficiency, reducing crosstalk, and adapting to scenarios that require "precise signal coverage".

[0003] When used at close range, traditional antennas can easily penetrate surrounding objects, causing crosstalk rates to rise in some scenarios. The installation structure of radio frequency antennas is mostly a fixed wing design, which is difficult to install and remove in narrow spaces (such as between equipment), resulting in insufficient adaptability. To address this, we propose a close-range anti-crosstalk directional radio frequency antenna. Utility Model Content

[0004] The main objective of this invention is to provide a short-range anti-crosstalk directional radio frequency antenna, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A near-range anti-crosstalk directional radio frequency antenna includes an antenna substrate, the upper surface of which is fixedly mounted with a shielding structure, and the lower surface of which is fixedly mounted with a metal reflective backplate.

[0007] Furthermore, the shielding structure includes an absorbing layer and a baffle, wherein the absorbing layer is embedded in the inner surface of the baffle.

[0008] Furthermore, the antenna substrate includes a radiating element and a substrate body, and the radiating element is provided on the upper surface of the substrate body.

[0009] Furthermore, the baffle is fixedly installed on the upper surface of the substrate body and is located around the radiation unit.

[0010] Furthermore, the metal reflective backplate includes a fixing plate, a backplate body, mounting holes, a weight-reducing groove, a storage groove, and a connecting shaft. The lower surface of the backplate body has a weight-reducing groove in the middle, and there are multiple sets of weight-reducing grooves. The lower surface of the backplate body has storage grooves on both sides. The storage grooves have connecting shafts embedded in the front and rear. The connecting shafts are rotatably connected to the fixing plate. The fixing plate has mounting holes on one side surface, both in the front and rear.

[0011] Furthermore, the backplate body is fixedly mounted on the lower surface of the substrate body.

[0012] In summary, due to the adoption of the above technical solution, the beneficial effects of this application are:

[0013] 1. By combining a metal reflective backplate and a shielding structure, the signal is concentrated in the close-range area directly above the radiating unit, and the beamwidth is controlled, which is conducive to achieving precise directional radiation;

[0014] 2. By using a shielding structure to absorb lateral signals and constraining downward signals with a reflective backplate, crosstalk rate is reduced at close range, which is significantly better than traditional antennas.

[0015] 3. The built-in storage slot and connecting shaft allow the fixing plate to be rotated into the storage slot, thereby reducing the space occupied and facilitating storage and transportation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a detailed view of the antenna substrate of this utility model;

[0018] Figure 3 Here is a detailed drawing of the shielding structure of this utility model;

[0019] Figure 4 This is a detailed view of the bottom of the metal reflective backplate of this utility model;

[0020] Figure 5 This is a cross-sectional view of the back panel of this utility model.

[0021] In the diagram: 1. Shielding structure; 101. Absorbing layer; 102. Baffle; 2. Antenna substrate; 201. Radiation element; 202. Substrate body; 3. Metal reflective backplate; 301. Fixing plate; 302. Backplate body; 303. Mounting hole; 304. Weight reduction groove; 305. Storage groove; 306. Connecting shaft. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the embodiments of this application. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0023] Reference Figure 1-5A near-range anti-crosstalk directional radio frequency antenna includes an antenna substrate 2, with a shielding structure 1 fixedly mounted on the upper surface of the antenna substrate 2 and a metal reflective backplate 3 fixedly mounted on the lower surface of the antenna substrate 2.

[0024] Specifically, the side signals of the antenna substrate 2 are shielded by the shielding structure 1, the bottom signals of the antenna substrate 2 are shielded by the metal reflective back plate 3, and the antenna substrate 2 is fixed by the metal reflective back plate 3.

[0025] In a preferred embodiment, the shielding structure 1 includes an absorbing layer 101 and a baffle 102, wherein the absorbing layer 101 is embedded in the inner surface of the baffle 102.

[0026] Specifically, the enclosure is achieved by a baffle 102, which is made of copper foil with an L-shaped cross-section. The absorbing layer 101 is made of ferrite material with a thickness of 1-2 mm.

[0027] In a preferred embodiment, the antenna substrate 2 includes a radiating element 201 and a substrate body 202, and the radiating element 201 is provided on the upper surface of the substrate body 202.

[0028] Specifically, the radiating unit 201 is fixed by attaching it to the substrate body 202. The radiating unit 201 is a strip-shaped microstrip patch structure with a length of 78-80mm and a width of 5-7mm. A feed point is provided in the middle of the radiating unit 201. The feed point is connected to the signal terminal of an external reader via a coaxial cable. A tuning notch is provided at the end of the radiating unit 201 away from the feed point. The tuning notch is an isosceles triangle. The substrate body 202 is an FR-4 epoxy glass cloth substrate.

[0029] In a preferred embodiment, the baffle 102 is fixedly mounted on the upper surface of the substrate body 202 and is located around the radiation unit 201;

[0030] Specifically, by fixing the baffle 102 to the substrate body 202, the baffle 102 and the absorbing layer 101 absorb and shield the lateral signal. The horizontal section of the baffle 102 is fixedly connected to the substrate body 202, and the vertical section extends away from the substrate body 202.

[0031] In a preferred embodiment, the metal reflective backplate 3 includes a fixing plate 301, a backplate body 302, mounting holes 303, weight-reducing grooves 304, storage grooves 305, and connecting shafts 306. The lower surface of the backplate body 302 has a weight-reducing groove 304 in the middle, and there are multiple sets of weight-reducing grooves 304. The lower surface of the backplate body 302 has storage grooves 305 on both sides. The storage grooves 305 have connecting shafts 306 embedded in the front and rear sides. The fixing plate 301 is rotatably connected between the connecting shafts 306. The fixing plate 301 has mounting holes 303 on one side surface of the fixing plate 301 at both the front and rear sides.

[0032] Specifically, by using aluminum alloy for the backplate body 302, downward-radiated signals can be reflected to the upper working area, reducing signal leakage. By opening a weight-reducing groove 304 at the bottom of the backplate body 302, the weight is reduced while ensuring the shielding effect. By opening a storage groove 305 on the side at the bottom of the backplate body 302, the fixing plate 301 can be rotated into the storage groove 305 during storage or transportation, thereby reducing the space occupied. When installation and use are required, the fixing plate 301 can be rotated out from the inside of the storage groove 305 and installed and fixed through the mounting hole 303.

[0033] In a preferred embodiment, the backplate body 302 is fixedly mounted on the lower surface of the substrate body 202;

[0034] Specifically, by fixing the backplate body 302 below the substrate body 202 and fixing it parallel to the radiation unit 201 on the lower surface of the substrate body 202, the downward signal is reflected.

[0035] It should be noted that during use, the signal radiated by the radiating unit 201 is absorbed by the absorbing layer 101 and the baffle 102, and the downward signal is reflected by the back plate body 302. When storage or transportation is required, the fixing plate 301 can be rotated into the storage slot 305 to reduce the space occupied. When it is needed for use, the fixing plate 301 can be unfolded and installed and fixed by the mounting hole 303.

[0036] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A short-range anti-crosstalk directional radio frequency antenna, characterized in that: The antenna substrate (2) includes an antenna base plate (2), the upper surface of which is fixedly mounted with a shielding structure (1), and the lower surface of which is fixedly mounted with a metal reflective backplate (3).

2. The near-range anti-crosstalk directional radio frequency antenna according to claim 1, characterized in that: The shielding structure (1) includes an absorbing layer (101) and a baffle (102), wherein the absorbing layer (101) is embedded on the inner surface of the baffle (102).

3. A near-range anti-crosstalk directional radio frequency antenna according to claim 2, characterized in that: The antenna substrate (2) includes a radiating element (201) and a substrate body (202), and the upper surface of the substrate body (202) is provided with the radiating element (201).

4. A near-range anti-crosstalk directional radio frequency antenna according to claim 3, characterized in that: The baffle (102) is fixedly installed on the upper surface of the substrate body (202) and is located around the radiation unit (201).

5. A near-range anti-crosstalk directional radio frequency antenna according to claim 4, characterized in that: The metal reflective backplate (3) includes a fixing plate (301), a backplate body (302), mounting holes (303), a weight-reducing groove (304), a storage groove (305), and a connecting shaft (306). The weight-reducing groove (304) is provided in the middle of the lower surface of the backplate body (302). There are multiple sets of weight-reducing grooves (304). The storage grooves (305) are provided on both sides of the lower surface of the backplate body (302). The connecting shafts (306) are embedded in the storage grooves (305) at the front and rear. The fixing plate (301) is rotatably connected between the connecting shafts (306). The mounting holes (303) are provided on one side surface of the fixing plate (301) at the front and rear.

6. A near-range anti-crosstalk directional radio frequency antenna according to claim 5, characterized in that: The backplate body (302) is fixedly installed on the lower surface of the substrate body (202).

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