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Single-feed-point array combined phased-array antenna

A technology of phased array antennas and combined phases, which is applied in the directions of antenna arrays, antennas, and antenna couplings that are energized separately. Standing wave, solve the effect of high cross-polarization grating lobe

Active Publication Date: 2020-11-03
GUANGZHOU STARWAY COMM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention aims at overcoming at least one defect of the above-mentioned prior art, and provides a single-feed point array combined phased array antenna, which is used to solve the problem of narrow axis ratio bandwidth and large cross-polarization radiation in single-feed point circular polarization design. question

Method used

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  • Single-feed-point array combined phased-array antenna
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Embodiment 1

[0034] Such as figure 1 Shown is a schematic diagram of the design of a single-feed point array combined with a phased array antenna. The single-feed point antenna unit adopts a rectangular structure, and the single-feed point antenna unit is a circularly polarized antenna unit or an elliptical polarized antenna unit. The circularly polarized antenna unit is described, and the position of the single feed point is located near the midpoint on the side of the antenna unit, wherein the phased array antenna includes a first array combination and a second array combination, and the phased array antenna is composed of several described The first array combination and the second array combination are arranged horizontally and vertically staggeredly. For the arrangement of the first array combination and the second array combination, the details are as follows:

[0035] The first array combination consists of 2×2 single-feed point circularly polarized antenna elements, that is, figur...

Embodiment 2

[0049] Such as Figure 10 Shown is another implementation mode of a circularly polarized phased array antenna combined with a single-feed point array. In this embodiment, the phased-array antenna array is composed of two 2×2 single-feed point circularly polarized antenna unit arrays that are interleaved horizontally and vertically Arranged, that is, a dark gray array combination and a light gray array combination, wherein the feed point position in the dark gray array combination is oriented left and right, and the feed point position in the light gray array combination is oriented up and down, but you can It can be seen that the arrangement rule of the four 2×2 array combinations framed by the black solid line is also the same as that of the first array combination and the second array combination in the embodiment, that is to say, in this In embodiment 2, the phased array antenna array also includes the same first array combination and second array combination as in embodime...

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Abstract

The invention relates to the field of phased-array antennas, in particular to a single-feed-point array combined circularly polarized phased-array antenna. The antenna comprises a first array combination and a second array combination, wherein the first array combination consists of 2*2 single-feed-point circularly polarized antenna units, and the 2*2 single-feed-point circularly polarized antennaunits rotate clockwise or anticlockwise around the center of the first array combination for 0 degree, 90 degrees, 180 degrees and 270 degrees orderly; the second array combination is composed of 2*2single-feed-point circularly polarized antenna units, and the second array combination is obtained by translating each antenna unit of the first array combination clockwise or anticlockwise by 90 degrees around the center of the first array combination. The phased-array antenna is formed by arranging a plurality of first array combinations and a plurality of second array combinations in a staggered mode in the transverse direction and the longitudinal direction. The single-feed-point array combined circular polarization phased array antenna of the present invention is used for solving the problems of narrow axial ratio bandwidth, large cross polarization radiation and the like in single-feed-point circular polarization design.

Description

technical field [0001] The invention relates to the field of phased array antennas, in particular to a phased array antenna combined with a single feed point array. Background technique [0002] A phased array antenna refers to an antenna that changes the shape of the pattern by controlling the feed phase of the radiating elements in the array antenna. Controlling the phase can change the direction of the maximum value of the antenna pattern to achieve the purpose of beam scanning. Generally speaking, a phased array antenna consists of a plurality of antenna elements arranged uniformly and sequentially to form an antenna array. In order to efficiently realize circularly polarized radiation waves, the antenna unit usually adopts a double-feed point circular polarization or a single-feed point circular polarization design. Compared with a double-feed point, the single-feed point circular polarization unit has the advantage of There is no need for a phase-shifting network or h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q21/20H01Q21/06H01Q21/00H01Q1/52H01Q1/50
CPCH01Q21/061H01Q21/20H01Q1/523H01Q21/0006H01Q21/0075H01Q1/50
Inventor 穆继芒赖志涛
Owner GUANGZHOU STARWAY COMM TECH
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