A broadband DRA filtering antenna and communication equipment

Abstract

This invention provides a broadband DRA filtering antenna and communication device. The broadband DRA filtering antenna includes a dielectric substrate, a metal plate attached to a first surface of the dielectric substrate, a feed microstrip attached to a second surface of the dielectric substrate, a fixing member, and a matrix DRA. The matrix DRA is mounted on the metal plate by the fixing member and is positioned directly above the feed microstrip. The matrix DRA includes multiple matrix-arranged DRAs and multiple bridging plates. The bridging plates are respectively connected between two DRAs. The bridging plates are covered with load patches, and the load patches have slots and multiple wing plates. The first end of the wing plate is mounted on the load patch, and the second end of the wing plate is attached to the DRA. This broadband DRA filtering antenna has excellent radiation performance and generates a bandpass filter through ground slots to filter out clutter of a specified frequency.

Description

Technical Field

[0001] This invention relates to the field of antenna technology, and in particular to a broadband DRA filter antenna and communication device. Background Technology

[0002] The traditional approach to designing filter arrays is to integrate them into the feed network. This means that the antenna feed and the filter feed network are designed separately, which usually achieves good filtering performance. However, designing the filter network and the antenna separately will result in a large insertion loss. If the antenna and the filter are combined into a filter antenna design, not only will the loss of the RF link be reduced, but also the cost and space will be reduced. Summary of the Invention

[0003] The main objective of this invention is to provide a broadband DRA filter antenna and communication device that solves the above-mentioned technical problems.

[0004] The present invention provides a broadband DRA filter antenna in a first aspect, comprising a dielectric substrate, a metal plate attached to a first surface of the dielectric substrate, a feed microstrip attached to a second surface of the dielectric substrate, a fixing member, and a matrix DRA. The matrix DRA is mounted on the metal plate by the fixing member and positioned directly above the feed microstrip. The matrix DRA includes a plurality of matrix-arranged DRAs and a plurality of bridging plates. The bridging plates are respectively connected between two DRAs. The bridging plates are covered with load patches. The load patches are provided with slots and a plurality of wing plates. The first end of the wing plate is mounted on the load patch, and the second end of the wing plate is attached to the DRA.

[0005] Preferably, there are nine DRAs, which are arranged in a matrix of three horizontal and three vertical lines.

[0006] Preferably, the gap between the three DRAs in the horizontal array is 2.3 mm, and the gap between the three DRAs in the vertical array is 2.6 mm.

[0007] Preferably, the DRA is a rectangular body.

[0008] Preferably, the first end of the wing plate is perpendicular to the load patch.

[0009] Preferably, the wing plate is a rectangular plate with a length of 1.6 mm and a width of 0.5 mm.

[0010] Preferably, the gap is located at the center of the load patch.

[0011] Preferably, the gap is a rectangular slot with a length of 1 mm and a width of 0.2 mm.

[0012] Preferably, the fixing member includes two fixing plates, each fixing plate is provided with a positioning post, and both the metal plate and the medium plate are provided with positioning holes for embedding the positioning post. The two fixing plates are used to install on both sides of the matrix DRA and clamp the matrix DRA.

[0013] In a second aspect, the present invention provides a communication device comprising a broadband DRA filter antenna as described in any of the above embodiments.

[0014] The beneficial effects of this invention are as follows: It provides a broadband DRA filtering antenna and communication device. The broadband DRA filtering antenna includes a dielectric substrate, a metal plate attached to a first surface of the dielectric substrate, a feed microstrip attached to a second surface of the dielectric substrate, a fixing member, and a matrix DRA. The matrix DRA is mounted on the metal plate by the fixing member and is positioned directly above the feed microstrip. The matrix DRA includes multiple matrix-arranged DRAs and multiple bridging plates. The bridging plates are respectively connected between two DRAs. The bridging plates are covered with load patches. The load patches are provided with slots and multiple wing plates. The first end of the wing plate is mounted on the load patch, and the second end of the wing plate is attached to the DRA. This broadband DRA filtering antenna has excellent radiation performance and generates a bandpass filter through ground slots to filter out clutter of a specified frequency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of an embodiment of the present invention. Figure 1 ;

[0016] Figure 2 This is a structural schematic diagram of an embodiment of the present invention. Figure 2 ;

[0017] Figure 3 This is a structural schematic diagram of an embodiment of the present invention. Figure 3 ;

[0018] Figure 4 This is an exploded view of an embodiment of the present invention;

[0019] Figure 5 The figures show the S-parameter curves and gain curves of an embodiment of the present invention.

[0020] Table of labels in the diagram:

[0021]

[0022] Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0024] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure pertains.

[0025] The terms "first," "second," and similar words used in this patent application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. The terms "comprising" or "including," and similar words, mean that the elements or objects preceding "comprising" or "including" encompass the elements or objects listed following "comprising" or "including," and do not exclude other elements or objects. The terms "connected" or "linked," and similar words, are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Above," "below," "left," "right," etc., are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] See appendix Figure 1 - Appendix Figure 5The present invention provides a broadband DRA filter antenna in a first aspect, comprising a dielectric substrate 100, a metal plate 200 attached to a first surface of the dielectric substrate 100, a feed microstrip 300 attached to a second surface of the dielectric substrate 100, a fixing member 400, and a matrix DRA 500. The matrix DRA 500 is mounted on the metal plate 200 via the fixing member 400 and positioned directly above the feed microstrip 300. The matrix DRA 500 includes a plurality of matrix-arranged DRAs 501 and a plurality of bridging plates 502. The bridging plates 502 are respectively connected between two DRAs 501. The bridging plates 502 are covered with load patches 503. The load patches 503 are provided with slots 504 and a plurality of wing plates 505. The first end of the wing plate 505 is mounted on the load patch 503, and the second end of the wing plate 505 is attached to the DRA 501.

[0028] Specifically, DRA stands for dielectric resonator. In this embodiment, the matrix DRA500 is a third-order matrix, meaning there are nine DRA501s arranged in a three-by-three matrix configuration. It's important to note that the four sides of the DRA501 at the center of the matrix are connected via bridging plates 502. Therefore, the remaining four corner DRA501s are connected to the other DRA501s in the longitudinal direction via bridging plates 502. Furthermore, only the DRA501 at the center of the matrix can connect to the four sides; the other DRA501s can only connect to each other in the longitudinal direction. (See attached diagram.) Figure 3 As shown, the DK (dielectric constant) of the DRA501 at the center of the matrix is ​​21. The DRA501 is a rectangular body with a length of 3.1 mm, a width of 2.8 mm, and a height of 3.3 mm. The gap between the three DRA501s in the horizontal array is 2.3 mm, and the gap between the three DRA501s in the vertical array is 2.6 mm.

[0029] Furthermore, the first end of the wing plate 505 is mounted on the load patch 503 and is perpendicular to the load patch 503. The wing plate 505 is a rectangular plate with a length of 1.6 mm and a width of 0.5 mm. The slot 504 is located in the center of the load patch 503 and is a rectangular slot with a length of 1 mm and a width of 0.2 mm.

[0030] Specifically, a zero point will be generated when the gap 504 begins on the load patch 503. A zero point refers to an area where interference effects occur in certain directions, resulting in a region where the amplitude of the electric or acoustic field is zero at a specific location. The wing plate 505 is metal, therefore it will also generate a zero point. Gaps also exist on the feed microstrip 300, as shown in the attached diagram. Figure 2 As shown, this will also produce a zero point, but as attached... Figure 5As can be seen from the S-parameter curve, there are 4 zeros. However, at 26GHz, due to the slotted design of the feed structure, the broadband DRA filter antenna generates a bandpass filter and cancels out one of its zeros. Therefore, the broadband DRA filter antenna has excellent filtering performance, and its gain effect at the canceled zero is 10dB higher than before.

[0031] Furthermore, the fastener 400 includes two fixing plates 401, with positioning posts 402 on the fixing plates 401. The metal plate 200 and the medium plate 100 are both provided with positioning holes 600 for embedding the positioning posts 402. The two fixing plates 401 are used to install on both sides of the matrix DRA500 and clamp the matrix DRA500.

[0032] Specifically, the mounting plate 401 needs to have a low dielectric constant to avoid affecting the performance of DRA501.

[0033] The present invention provides a communication device in a second aspect, which includes a broadband DRA filter antenna according to any of the above-described schemes.

[0034] The above description is merely an embodiment of the present invention. It should be noted that those skilled in the art can make improvements without departing from the inventive concept, but these improvements all fall within the protection scope of the present invention.

Claims

1. A broadband DRA filter antenna, characterized in that, include: Medium plate; A metal plate attached to the first surface of the dielectric plate; A feed microstrip attached to the second surface of the dielectric substrate; Fasteners; A matrix DRA is mounted on the metal plate via the fastener and positioned directly above the feed microstrip. The matrix DRA includes multiple matrix-arranged DRAs and multiple bridging plates. The bridging plates are connected between two DRAs respectively. The bridging plates are covered with load patches, which have slots and multiple wing plates. The first end of each wing plate is mounted on the load patch, and the second end of each wing plate is attached to a DRA. There are nine DRAs arranged in a matrix of three horizontal and three vertical arrays. The gap between three DRAs in the horizontal array is 2.3 mm, and the gap between three DRAs in the vertical array is 2.6 mm. The wing plates are rectangular plates with a length of 1.6 mm and a width of 0.5 mm, and the slots are rectangular slots with a length of 1 mm and a width of 0.2 mm.

2. The broadband DRA filter antenna according to claim 1, characterized in that, The DRA is a rectangular shape.

3. The broadband DRA filter antenna according to claim 1, characterized in that, The first end of the wing plate is perpendicular to the load patch.

4. The broadband DRA filter antenna according to claim 1, characterized in that, The gap is located at the center of the load patch.

5. The broadband DRA filter antenna according to claim 1, characterized in that, The fastener includes two fixing plates, each with a positioning post. Both the metal plate and the medium plate have positioning holes for embedding the positioning post. The two fixing plates are used to install on both sides of the matrix DRA and clamp the matrix DRA.

6. A communication device, characterized in that, Includes the broadband DRA filter antenna as described in any one of claims 1-5 above.

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