Side-fed dual-polarized all-metal Vivaldi array antenna
An array antenna, vertically polarized antenna technology, applied in the direction of antenna, antenna array, antenna grounding switch structure connection, etc., can solve the problems of dielectric material loss dispersion, low structural strength of printed board, difficult modular expansion, etc., to achieve longevity Long, easy modular assembly, high structural strength effect
Active Publication Date: 2021-01-01
扬州船用电子仪器研究所
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Problems solved by technology
However, with the deepening of the research, the traditional printed board type Vivaldi antenna also exposed some shortcomings, for example, the loss dispersion phenomenon caused by the dielectric material; the pattern distortion caused by the medium surface wave; it is difficult to modularize and expand; the printed board structure Low strength and easy damage; in dual-polarization applications, electrical connection problems caused by splicing two polarized printed boards, etc.
Method used
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[0028] like figure 1 As shown, a side-fed dual-polarized all-metal Vivaldi array antenna includes several central metal antenna units 1 arranged on the metal base plate 2 in a rectangular grid array and surrounding the central metal antenna unit 1 on the metal base plate 2. A ring of edge metal antenna elements 12. The function of the metal bottom plate 2 is mainly to increase gain and directivity, improve receiving sensitivity, block and shield electromagnetic waves from opposite directions, and is beneficial to improve the directivity of antenna radiation.
[0029] like figure 2 As shown, the central metal antenna unit 1 includes a horizontally polarized antenna board 3 and a vertically polarized antenna board 4 arranged on a mounting board 5 . Wherein, the horizontally polarized antenna board 3 , the vertically polarized antenna board 4 and the mounting board 5 are integrally processed. The mounting plate 5 is fixed on the metal base plate 2 by screws 7 . The horizonta...
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Abstract
The invention discloses a side-fed dual-polarized all-metal Vivaldi array antenna, and the antenna comprises a plurality of central metal antenna units arranged on a metal bottom plate in an array manner and edge metal antenna units arranged on the metal bottom plate around the central metal antenna units; each central metal antenna unit comprises a horizontally-polarized antenna plate and a vertically-polarized antenna plate which are arranged on an installation plate, wherein the horizontally-polarized antenna plate and the vertically-polarized antenna plate are crossed in pairs to form a cross wedge shape, and radio frequency connectors are arranged on the horizontally-polarized antenna plate and the vertically-polarized antenna plate and used for achieving coaxial feeding; in order tofacilitate feeding and reduce the thickness of the antenna plate, the metal structural part in the middle of the antenna plate protrudes towards the side surface, and a radio frequency connector is installed in a hole formed in the center of the protruding part to form a side feed structure. The antenna has the advantages of wide working frequency band (triple frequency), capability of realizing two-dimensional large-angle (+ / -45 degrees) scanning, capability of meeting various polarization requirements, easiness in batch processing and manufacturing, and easiness in modular expansion.
Description
technical field [0001] The invention belongs to the technical field of radar electronic warfare antennas, in particular to a side-fed dual-polarized all-metal Vivaldi array antenna. Background technique [0002] With the development of modern radar communication technology, phased array antennas have been used more and more widely. Compared with radar communication systems, electronic warfare systems have more stringent requirements on the performance of array antennas. Wider operating frequency band, larger scanning angle, fast switching of multiple polarizations, and modular and scalable structure requirements all face greater challenges in the design of array antennas. [0003] As a common broadband phased array antenna unit, Vivaldi antenna has been widely used in various broadband electronic warfare, radar, in the communication system. However, with the deepening of the research, the traditional printed board type Vivaldi antenna also exposed some shortcomings, for e...
Claims
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IPC IPC(8): H01Q21/00H01Q1/36H01Q1/38H01Q1/50
CPCH01Q21/00H01Q1/36H01Q1/38H01Q1/50
Inventor 李哲陶静李祥祥叶正浩许露
Owner 扬州船用电子仪器研究所