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Series-feed circularly-polarized antenna normal array

A circularly polarized antenna, circularly polarized technology, applied to antenna arrays, individually powered antenna arrays, antennas, etc., can solve the problems of unfavorable array formation, large weight, large array element area, etc., and achieve good circular polarization characteristics , the effect of eliminating interference

Active Publication Date: 2019-09-13
CHINA ELECTRONIC TECH GRP CORP NO 38 RES INST
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Problems solved by technology

[0003] In various radar or communication fields, the characteristics of light weight, small shape, and planar structure are often of application value, especially in the case of low frequency, the conventional design method makes the array element large in size and heavy in weight, which is not conducive to formation

Method used

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  • Series-feed circularly-polarized antenna normal array
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  • Series-feed circularly-polarized antenna normal array

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Embodiment Construction

[0025] The embodiments of the present invention will be described in detail below. This embodiment is implemented on the premise of the technical solution of the present invention. Detailed implementation modes and specific operation procedures are given, but the protection scope of the present invention is not limited to the following implementations. example.

[0026] Such as figure 1 with figure 2 As shown, this embodiment includes four series-fed circularly polarized patch antennas 3 with dual ports. Each patch antenna 3 is provided with a first port 1 and a second port 2 located on a 90° central angle arc. , N patch antennas 3 are arranged in a multilayer columnar structure at equal intervals along the normal direction of the radiation pattern.

[0027] The radius of the ground and the reflector plate is rg=182.7mm (in Ansoft HFSS modeling, when the circle is divided into 4, the reflector plate becomes a square with a side length of 258.4mm). The length of the RF coaxial cab...

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Abstract

The invention discloses a series-feed circularly-polarized antenna normal array. The series-feed circularly-polarized antenna normal array comprises N series-feed circularly-polarized patch antennas,wherein each series-feed circularly-polarized patch antenna is provided with dual ports, a first port and a second port are arranged on each patch antenna and are arranged on a 90-degree central anglearc line, and the N patch antennas are normally arranged at equal distance to form a multi-layer columnar structure along a radiation direction diagram. By the radiation normal array, the gain is improved, meanwhile, only the thickness is increased, while the planar size (normal projection) is not changed, further planar array is facilitated, the gain increment quantity of four unit arrays exceeds 4dB; the radiation efficiency of the normal array is farther higher than radiation of the units, the normal array has better circularly-polarized characteristic than those of the units, left-handed / right-handed circularly-polarized switching still can be easily achieved after arraying, the series-feed unit number N can be freely selected according to a demand, and thus, a feasible scheme for building a three-dimensional array also is provided. A wave absorption material wraps a cable, and the interference of the polarization wave can be effectively eliminated.

Description

Technical field [0001] The invention relates to an antenna technology, in particular to a series-fed circularly polarized antenna normal array. Background technique [0002] According to the polarized wave form, the antenna can be divided into horizontal polarization, vertical polarization, oblique polarization, elliptical polarization, circular polarization, etc. According to the feed form, it can be divided into series feed and parallel feed, and it can be divided according to the array form. It is a circular array, linear array, planar array, common type array, etc. [0003] In the fields of various types of radar or communications, the characteristics of light weight, small shape, and planar structure often have application value. Especially in the case of low frequency, conventional design methods make the area of ​​the array element large and heavy, which is not conducive to Team up. [0004] In the azimuth or elevation direction, in order to ensure that the antenna has a lar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/38H01Q1/48H01Q1/50H01Q1/52H01Q15/24H01Q17/00H01Q19/10H01Q21/00H01Q21/20
CPCH01Q15/24H01Q1/50H01Q1/52H01Q17/00H01Q1/48H01Q19/10H01Q21/20H01Q21/0006H01Q1/38
Inventor 查林周伟华
Owner CHINA ELECTRONIC TECH GRP CORP NO 38 RES INST
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