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S-band high-gain circularly polarized antenna

A circularly polarized antenna and high-gain technology, applied in the field of satellite communication antennas, can solve problems such as low gain and insufficient gain, and achieve the effects of expanding frequency band bandwidth, low cost and simple structure

Pending Publication Date: 2019-03-22
CHENGDU GUORONG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the commonly used "communication in motion" antenna units are mainly in the form of microstrip antennas, dipole antennas, and helical antennas. These antennas have their own advantages, but they are insufficient in terms of gain.
As mentioned in the patent document (CN207409651U), a circularly polarized antenna with a regular polygon patch has the advantages of a ground profile and a simple structure, but has the disadvantage of low gain

Method used

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  • S-band high-gain circularly polarized antenna

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Embodiment Construction

[0023] The technical solution of the present invention will be further introduced below in conjunction with specific implementation methods and accompanying drawings.

[0024] This specific embodiment discloses an S-band high-gain circularly polarized antenna, including at least one antenna unit, such as image 3 As shown, there are four antenna units in this embodiment. The number of antenna units can be set as required.

[0025] Such as figure 1 As shown, the antenna unit includes an antenna dipole combination 1, and the antenna dipole combination 1 includes four rotationally symmetrical antenna dipoles, as shown in figure 2 and Figure 8 As shown, they are the first antenna element 11 , the second antenna element 12 , the third antenna element 13 and the fourth antenna element 14 . Such as Figure 8 As shown, the tops of the four antenna elements are separated and the bottoms are connected together, and several slots are opened in each antenna element. The antenna un...

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Abstract

The invention discloses an S-band high-gain circularly polarized antenna, which comprises at least one antenna unit, a supporting column and a feed network, wherein the antenna unit comprises four rotationally symmetric antenna oscillators, the top parts of the four antenna oscillators are separated, the bottom parts thereof are connected, a plurality of grooves are formed in each antenna oscillator, the supporting column is connected with the four antenna oscillators, the supporting column is further connected with a metal bottom plate, and the feed network is used for feeding the antenna oscillators. According to the S-band high-gain circularly polarized antenna, a butterfly antenna is realized through separating the top parts of the four antenna oscillators and connecting the bottom parts thereof, a fractal antenna is realized through forming the plurality of grooves in each antenna oscillator, and the butterfly antenna is combined with the fractal antenna, such that the frequency bandwidth is effectively expanded, the structure is simple and the cost is low.

Description

technical field [0001] The invention relates to a satellite communication antenna, in particular to an S-band high-gain circularly polarized antenna. Background technique [0002] With the increasing popularity of satellite communication, satellite communication terminals using "communication in motion" technology can realize uninterrupted communication during the movement of the carrier, and at the same time have many advantages such as strong mobility, strong anti-interference ability, and strong confidentiality. increasingly widespread applications. Among all kinds of "communication in motion" antennas, phased array antennas rely on fast beam scanning to keep the beams on the satellite in real time during the movement of the carrier, and are not affected by the movement posture of the carrier. Among them, the antenna unit is a phased array The key components of the antenna, its bandwidth, gain and other performance will directly affect the overall performance of the phas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/36H01Q1/50H01Q1/12
CPCH01Q1/12H01Q1/36H01Q1/50
Inventor 袁东项阳肖旭葛宇
Owner CHENGDU GUORONG TECH
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