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A Normal Array of Series-fed Circularly Polarized Antennas

A circularly polarized antenna and circularly polarized technology, applied in the direction of antenna arrays, antenna arrays energized separately, antennas, etc., can solve the problems of unfavorable array formation, large weight, and large array element area, and achieve interference elimination and good circle Effect of Polarization Properties

Active Publication Date: 2022-01-14
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

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  • A Normal Array of Series-fed Circularly Polarized Antennas
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  • A Normal Array of Series-fed Circularly Polarized Antennas

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Embodiment Construction

[0025] The embodiments of the present invention are described in detail below. This embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following implementation example.

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

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

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Abstract

The invention discloses a normal array of serially fed circularly polarized antennas, including N serially fed circularly polarized patch antennas with dual ports, and each patch antenna is provided with a At the first port and the second port, N patch antennas are arranged at equal intervals along the normal direction of the radiation pattern to form a multi-layer columnar structure. The present invention increases the gain by radiating the normal direction of the array, and at the same time only increases the thickness without changing the plane size (normal projection), which is beneficial to further planar formation, 4-unit formation, and the gain increase exceeds 4dB. The radiation efficiency of the normal array is much higher than that of the unit itself. The normal array radiation has better circular polarization characteristics than the unit. After forming an array, left-handed / right-handed circular polarization can still be switched easily. The number of series feed units: N can be freely selected according to the needs, so it also provides a feasible solution for building a three-dimensional array. The cable is wrapped with absorbing material, which can effectively eliminate the interference of polarized waves.

Description

technical field [0001] The invention relates to an antenna technology, in particular to a normal array of serially fed circularly polarized antennas. Background technique [0002] According to the form of polarized wave, the antenna can be divided into horizontal polarization, vertical polarization, oblique polarization, elliptical polarization, circular polarization, etc. According to the feeding form, it can be divided into series feed and parallel feed. It is a circular array, a linear array, a planar array, a conformal array, etc. [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. [0004] In order to ensure that the antenna has a large scanning capability without grating lobes in the azimuth or elevati...

Claims

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Application Information

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Patent Type & Authority Patents(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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