CN-122026100-A - Dual-frequency positioning antenna and wireless communication system

CN122026100ACN 122026100 ACN122026100 ACN 122026100ACN-122026100-A

Abstract

The invention discloses a dual-frequency positioning antenna and a wireless communication system, which relate to the technical field of antennas, wherein the antenna comprises a first radiation layer, a second radiation layer and a metal stratum, the first radiation layer comprises at least two first edge parts which are symmetrically arranged, each first edge part comprises two non-linear structures which alternate in relief, the two non-linear structures of the same first edge part are mutually connected and are symmetrically arranged, each first edge part is provided with a first metal substrate, the second radiation layer is electrically connected with the first radiation layer and is oppositely arranged with the first radiation layer, the first metal substrate is positioned between the first radiation layer and the second radiation layer, a first dielectric layer is arranged between the first metal substrate and the second radiation layer, the first dielectric layer is used for connecting the first metal substrate with the second radiation layer, the metal stratum is connected with the second radiation layer, and the first radiation layer is provided with two feed parts which are electrically connected with the metal stratum.

Inventors

FENG BOTAO
MO SHU
Xiao Gengbo
DING XIAO
Shu guoxiang
YANG WEI

Assignees

深圳大学

Dates

Publication Date: 20260512
Application Date: 20260410

Claims (10)

1. A dual-band positioning antenna, comprising: The first radiation layer comprises at least two first edge parts, wherein the at least two first edge parts are symmetrically arranged about an X direction and/or a Y direction, each first edge part comprises two non-linear structures which alternate in relief, the two non-linear structures of the same first edge part are mutually connected, and the two non-linear structures are symmetrically arranged about an angular bisector forming a right angle with the Y direction; The first metal substrate is smaller than the first radiation layer and smaller than the second radiation layer, the first metal substrate is positioned between the first radiation layer and the second radiation layer, a first dielectric layer is arranged between the first metal substrate and the second radiation layer, and the first dielectric layer connects the first metal substrate with the second radiation layer; the first radiation layer is provided with two feed parts, and the two feed parts are electrically connected with the metal stratum.
2. The dual-band positioning antenna of claim 1, wherein each of the nonlinear structures comprises a plurality of concave portions and a plurality of convex portions, the plurality of concave portions and the plurality of convex portions being alternately connected; Each nonlinear structure is provided with at least one first branch, the first branches extend along the Z direction and are electrically connected with the second radiation layer, the first branches of the two nonlinear structures of the same first edge part are symmetrically arranged about the angular bisector, the first branches of the two adjacent first edge parts are symmetrically arranged about the X direction or the Y direction, and the first branches of the opposite two first edge parts are symmetrically arranged about the X direction or the Y direction.
3. The dual-band positioning antenna of claim 2, wherein each of the structures is provided with three first branches, wherein the three first branches of one of the nonlinear structures of the same first edge are arranged along the X direction and are spaced apart, and the three first branches of the other nonlinear structure are arranged along the Y direction and are spaced apart.
4. The dual-band positioning antenna of claim 1, wherein the first radiation layer is provided with radiation grooves corresponding to each of the first edge portions, and at least two of the radiation grooves are symmetrically arranged with respect to the X direction or the Y direction.
5. The dual-band positioning antenna of claim 4, wherein each of the radiating slots comprises a first slot segment, a second slot segment, a third slot segment, a fourth slot segment, a fifth slot segment, and a sixth slot segment; The first groove section, the third groove section and the fifth groove section extend along the X direction; the second groove section, the fourth groove section and the sixth groove section extend along the Y direction; the second groove section and the fourth groove section are oppositely arranged along the X direction, and the third groove section and the fifth groove section are oppositely arranged along the Y direction; The second groove section is communicated with the first groove section and the third groove section, the fourth groove section is communicated with the third groove section and the fifth groove section and the sixth groove section.
6. The dual-band positioning antenna of any of claims 1-5, wherein the second radiation layer comprises at least two second edge portions, the number of second edge portions is set corresponding to the number of first edge portions, each second edge portion is provided with a second metal substrate, the area of the second metal substrate is smaller than the area of the second radiation layer and smaller than the area of the metal stratum, the second metal substrate is arranged between the second radiation layer and the metal stratum, a second dielectric layer is arranged between each second metal substrate and the metal stratum, and the second dielectric layer connects the second metal substrate with the metal stratum.
7. The dual-band positioning antenna of claim 6, wherein a third dielectric layer is disposed on a side of the metal ground layer facing the second radiation layer, each of the second edge portions is provided with at least one second branch extending in the Z direction and inserted into the third dielectric layer, and the second branches of two adjacent second edge portions are symmetrically disposed about the angular bisector, and the second branches of two opposite second edge portions are symmetrically disposed about the X direction or the Y direction.
8. The dual-band positioning antenna of claim 7, wherein each of the second edge portions has three second branches, and the three second branches of the same second edge portion are arranged along the X-direction or the Y-direction at intervals.
9. A dual-band positioning antenna according to claim 8, wherein the metal layer is provided with an annular groove at a position corresponding to the second edge, and/or The cross section of the second branch is rectangular, and rectangular gaps are formed in positions, corresponding to the second branch, of the metal stratum.
10. A wireless communication system comprising a dual-band positioning antenna according to any of claims 1-9.

Description

Dual-frequency positioning antenna and wireless communication system Technical Field The present invention relates to the field of antenna technologies, and in particular, to a dual-band positioning antenna and a wireless communication system. Background With the rapid development of satellite positioning technology, antennas with low cost, ground profile, high gain, circular polarization and other characteristics are receiving high attention in various satellite positioning wireless communication systems, and a great deal of research has been conducted. However, most of the positioning antennas at present have the problems of high cost, low gain, few covered satellite frequency bands, too high section and the like, so that the application scenes of the positioning antennas are limited. Along with the increasing performance requirements of the industry on the positioning antenna, the positioning antenna with high gain, low cost, low profile and multiple satellite frequency point coverage is designed, and has important application value. In realizing the dual-band positioning antenna, a laminated structure is generally adopted, which causes an increase in the volume of the antenna, and the antenna at the bottom loses a large part of energy because good radiation is not obtained, so that the advantages of miniaturization and high gain of the antenna are lost. In order to improve the gain, a plurality of antennas are usually made of plates with smaller loss, but the cost of the antennas is increased remarkably, and the antennas are not beneficial to civil mass production. Therefore, it is a difficulty in achieving miniaturization, high gain, and low cost at the same time in the dual-band positioning antenna. Disclosure of Invention The invention mainly aims to provide a double-frequency positioning antenna and a wireless communication system, and aims to achieve miniaturization, high gain and low cost of the double-frequency positioning antenna. In order to achieve the above object, the dual-band positioning antenna according to the present invention includes: The first radiation layer comprises at least two first edge parts, wherein the at least two first edge parts are symmetrically arranged about an X direction and/or a Y direction, each first edge part comprises two non-linear structures which alternate in relief, the two non-linear structures of the same first edge part are mutually connected, and the two non-linear structures are symmetrically arranged about an angular bisector forming a right angle with the Y direction; The first metal substrate is smaller than the first radiation layer and smaller than the second radiation layer, the first metal substrate is positioned between the first radiation layer and the second radiation layer, a first dielectric layer is arranged between the first metal substrate and the second radiation layer, and the first dielectric layer connects the first metal substrate with the second radiation layer; the first radiation layer is provided with two feed parts, and the two feed parts are electrically connected with the metal stratum. In an embodiment, each of the nonlinear structures includes a plurality of concave portions and a plurality of convex portions, and the plurality of concave portions and the plurality of convex portions are alternately connected; Each nonlinear structure is provided with at least one first branch which extends along the Z direction and is connected with the second radiation layer, the first branches of the two nonlinear structures of the same first edge part are symmetrically arranged about the angular bisector, the first branches of the two adjacent first edge parts are symmetrically arranged about the X direction or the Y direction, and the first branches of the two opposite first edge parts are symmetrically arranged about the X direction or the Y direction. In one embodiment, each nonlinear structure is provided with three first branches, wherein the three first branches of one nonlinear structure of the same first edge part are arranged along the X direction and are arranged at intervals, and the three first branches of the other nonlinear structure are arranged along the Y direction and are arranged at intervals. In an embodiment, the first radiation layer is provided with radiation grooves corresponding to each of the first edge portions, and at least two radiation grooves are symmetrically arranged with respect to the X direction or the Y direction. In an embodiment, each of the radiation slots includes a first slot segment, a second slot segment, a third slot segment, a fourth slot segment, a fifth slot segment, and a sixth slot segment; The first groove section, the third groove section and the fifth groove section extend along the X direction; the second groove section, the fourth groove section and the sixth groove section extend along the Y direction; the second groove section and the fourth groove section are oppositely arranged a