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Directional circularly-polarized spiral array antenna and dual-circularly-polarized spiral array antenna

An array antenna and circular polarization technology, which is applied in the field of dual circularly polarized helical array antennas and directional circularly polarized helical array antennas, can solve the problems that cannot meet specific application requirements and the bandwidth of helical antennas is not wide enough.

Active Publication Date: 2021-07-09
GUANGDONG UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] This application provides a directional circularly polarized helical array antenna and a dual circularly polarized helical array antenna, which are used to solve the problem that the bandwidth of the existing helical antenna is not wide enough to meet specific application requirements and that the circularly polarized antenna cannot be used under the same caliber. Technical Problems Able to Realize UWB and Work Simultaneously

Method used

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  • Directional circularly-polarized spiral array antenna and dual-circularly-polarized spiral array antenna
  • Directional circularly-polarized spiral array antenna and dual-circularly-polarized spiral array antenna
  • Directional circularly-polarized spiral array antenna and dual-circularly-polarized spiral array antenna

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Embodiment Construction

[0030] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiment of the application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the application. Obviously, the described embodiment is only It is a part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0031] For ease of understanding, see figure 1 , a directional circularly polarized helical array antenna provided by the present application, including several helical units 10, 20, 30, 40 and a feeding network, and several helical units 10, 20, 30, 40 are connected through the feeding network;

[0032] Each helical unit includes two helical arms 11, 12, the two ...

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Abstract

The invention discloses a directional circularly-polarized spiral array antenna and a dual-circularly-polarized spiral array antenna. The directional circularly-polarized spiral array antenna comprises a plurality of spiral units and a feed network, and the plurality of spiral units are connected through the feed network; each spiral unit comprises two spiral arms, the two spiral arms are connected end to end, each spiral arm comprises at least two spiral line sections, and the spiral directions of the spiral line sections are opposite or the same; and at least one differential feed port is arranged in the plurality of spiral units, and the differential feed port is arranged at the joint of the two spiral arms. The dual-circularly-polarized spiral array antenna comprises two crossed antenna sub-arrays, each antenna sub-array is the directional circularly-polarized spiral array antenna, and each antenna sub-array can independently work in a left-handed or right-handed state, so that three different polarization states are realized, and the antenna sub-arrays can work at the same time without switching feed networks for time-sharing work.

Description

technical field [0001] The present application relates to the technical field of communication antennas, in particular to a directional circularly polarized helical array antenna and a dual circularly polarized helical array antenna. Background technique [0002] The helical antenna is an antenna with a helical shape that can radiate circularly polarized waves, and is composed of a metal helix with good electrical conductivity. Its radiation characteristics are divided into normal mode radiation and axial mode radiation. When the ratio of the diameter of the helix to the wavelength is small, the helical antenna works in the normal mode state. When the diameter and pitch meet certain conditions, the radiation circular pole can be realized. chemical wave. [0003] When the diameter of the helix of the helical antenna is large and the length of one circle is close to one wavelength, the antenna works in the axial mode state and can realize circularly polarized wave radiation. ...

Claims

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Application Information

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IPC IPC(8): H01Q21/00H01Q1/36H01Q1/50
CPCH01Q21/00H01Q1/50H01Q1/36Y02D30/70
Inventor 胡振欣黄雨萱叶亮华黄昆沓世我刘远吴泳晔
Owner GUANGDONG UNIV OF TECH
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