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Broadband circular polarization transmission array antenna based on dielectric structure

A medium structure, circularly polarized technology, applied to antenna unit combinations, antennas, antenna arrays, etc. with different polarization directions, it can solve the problems of insufficient axial ratio bandwidth and narrow axial ratio bandwidth, etc., and achieve high gain and wide axial ratio. Bandwidth and stable performance

Active Publication Date: 2022-03-08
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the existing circularly polarized transmissive array antenna schemes have the disadvantage of narrow axial ratio bandwidth, which is caused by the fact that most designs rely on metal structures and the working principle is based on the principle of resonance. The related antennas that have been reported so far can achieve The wider axial ratio bandwidth is generally about 20%, and there is a shortcoming of insufficient axial ratio bandwidth in broadband communication applications

Method used

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  • Broadband circular polarization transmission array antenna based on dielectric structure
  • Broadband circular polarization transmission array antenna based on dielectric structure
  • Broadband circular polarization transmission array antenna based on dielectric structure

Examples

Experimental program
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Embodiment

[0039] A broadband circularly polarized transmissive array antenna based on a dielectric structure, such as figure 1 As shown, it includes a transmission array surface 11 and a feed source 12;

[0040] Wherein, the transmission array surface 11 includes 8 types, multiple array elements 13 arranged in a linear form with different sizes; the feed source 12 is a broadband linearly polarized antenna;

[0041] The feed source 12 is located on the central axis of the transmission array surface 11 , illuminates the transmission array surface 11 vertically, and forms an angle of 45 degrees with the transmission array surface 11 in the horizontal direction.

[0042] figure 2 and image 3 Shown are a full view and a side view of the front unit 13, respectively, and the front unit 13 includes a dielectric block 21, a support structure 22 and a matching structure 23 connected sequentially from top to bottom;

[0043] The dielectric block 21, the supporting structure 22 and the matching...

Embodiment 2

[0062] A broadband circularly polarized transmissive array antenna based on a dielectric structure, such as figure 1 As shown, it includes a transmission array surface 11 and a feed source 12;

[0063] Wherein, the transmission array surface 11 includes 8 types, multiple array elements 13 arranged in a linear form with different sizes; the feed source 12 is a broadband linearly polarized antenna;

[0064] The feed source 12 is located on the central axis of the transmission array surface 11 , illuminates the transmission array surface 11 vertically, and forms an angle of 45 degrees with the transmission array surface 11 in the horizontal direction.

[0065] figure 2 and image 3 Shown are a full view and a side view of the front unit 13, respectively, and the front unit 13 includes a dielectric block 21, a support structure 22 and a matching structure 23 connected sequentially from top to bottom;

[0066] The dielectric block 21, the supporting structure 22 and the matchi...

Embodiment 3

[0070] A broadband circularly polarized transmissive array antenna based on a dielectric structure, such as figure 1 As shown, it includes a transmission array surface 11 and a feed source 12;

[0071] Wherein, the transmission array surface 11 includes 8 types, multiple array elements 13 arranged in a linear form with different sizes; the feed source 12 is a broadband linearly polarized antenna;

[0072] The feed source 12 is located on the central axis of the transmission array surface 11 , illuminates the transmission array surface 11 vertically, and forms an angle of 45 degrees with the transmission array surface 11 in the horizontal direction.

[0073] figure 2 and image 3 Shown are a full view and a side view of the front unit 13, respectively, and the front unit 13 includes a dielectric block 21, a support structure 22 and a matching structure 23 connected sequentially from top to bottom;

[0074] The dielectric block 21, the supporting structure 22 and the matchi...

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Abstract

The invention discloses a broadband circular polarization transmission array antenna based on a dielectric structure. The transmission array antenna comprises a transmission array plane and a feed source; wherein the transmission array surface comprises eight and a plurality of array surface units which have different sizes and are arranged in a linear form; the feed source is a broadband linearly polarized antenna; the feed source is located on the central axis of the transmission array plane, vertically irradiates the transmission array plane, and forms a 45-degree included angle with the transmission array plane in the horizontal direction. According to the invention, an all-dielectric structure is adopted, and a broadband circularly polarized transmission array antenna design is provided. In principle, the antenna is a circularly polarized antenna in a traveling wave form and is not limited by the resonance principle in the traditional design, so that the antenna has a relatively wide axial ratio bandwidth, and the bandwidth can reach 51.8% and is far superior to the current technical level. In addition, the antenna is stable in performance in a working frequency band and has the characteristic of high gain.

Description

technical field [0001] The invention relates to the technical field of antennas, in particular to a wide-band circularly polarized transmission array antenna based on a dielectric structure. Background technique [0002] In recent years, with the continuous development of wireless communication technology, circularly polarized transmissive array antennas have attracted extensive attention from academia and industry. This kind of antenna generally has the advantages of high directivity, high gain, anti-interference, anti-multipath effect and avoiding polarization mismatch to a certain extent, and is often widely used in satellite communication, navigation and positioning, mobile communication and other fields. In practical applications, broadband antennas usually have the advantages of large communication capacity, high transmission rate, and high spectrum utilization. Therefore, broadband circularly polarized transmissive array antennas are an important research direction. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q21/24H01Q1/00H01Q3/34H01Q3/44H01Q15/02H01Q21/00
CPCH01Q21/245H01Q21/0006H01Q15/02H01Q3/34H01Q3/44H01Q1/002
Inventor 马自龙肖新风
Owner SOUTH CHINA UNIV OF TECH
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