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Circularly polarized antenna

A circularly polarized antenna, coupled line technology, applied in antennas, antenna unit combinations with different polarization directions, antenna arrays, etc., can solve the problem of large size of circularly polarized antennas

Inactive Publication Date: 2020-02-18
SZ DJI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the size of existing circularly polarized antennas is generally large, which limits their use

Method used

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Embodiment Construction

[0018] The following will clearly describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present 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.

[0019] It should be noted that when a component is said to be "fixed" to another component, it can be directly on the other component or there can also be an intervening component. When a component is said to be "connected" to another component, it may be directly connected to the other component or there may be intervening components at the same time.

[0020] see figure 1 , the present invention provides a circularly polarized antenna 100 , including a dielectric cylinder...

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Abstract

The invention provides a circularly polarized antenna. The circularly polarized antenna comprises a dielectric cylinder, a feed substrate, a feed network and a plurality of radiation oscillators; thefeed network is arranged on the front surface and the back surface of the feed substrate; the feed substrate is fixed in the dielectric cylinder; the plurality of radiation oscillators are spirally arranged on the outer surface of the dielectric cylinder, and one end of each radiation oscillator is electrically connected with the feed network; the feed network comprises a feed port and a pluralityof folded broadband baluns, one end of each broadband balun is electrically connected with one radiation oscillator, and the other end of each broadband balun is connected with the feed port. According to the invention, the circularly polarized antenna with a simple structure is designed and obtained, and the broadband balun is folded, so that the radial size of the circularly polarized antenna can be reduced, and the circularly polarized antenna with a relatively small size is obtained.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a circularly polarized antenna. Background technique [0002] With the continuous development of society, the performance requirements of antennas are getting higher and higher. In modern wireless application systems, it is difficult to meet people's needs with purely linearly polarized antennas. Circularly polarized antennas are more and more popular Widely concerned, and circularly polarized antennas are widely used in communication, remote sensing, radar, electronic reconnaissance and electronic jamming because of their special performance. However, the size of existing circularly polarized antennas is generally large, which limits their use. Contents of the invention [0003] The present invention provides a circularly polarized antenna. The circularly polarized antenna has a simple structure and a small volume, thereby better meeting actual application requirements. ...

Claims

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Application Information

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IPC IPC(8): H01Q1/38H01Q1/50H01Q21/00H01Q21/24
CPCH01Q1/38H01Q1/50H01Q21/0075H01Q21/24H01Q11/08H01Q1/362
Inventor 叶璐李栋
Owner SZ DJI TECH CO LTD
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