Circularly-polarized high-gain antenna based on folded plane reflective array technology

A planar reflector array and high-gain antenna technology, applied to antennas, electrical components, etc., can solve the problems of less research on secondary reflectors, achieve good linear polarization-circular polarization conversion characteristics, and low profile effects

Pending Publication Date: 2021-10-26
NANJING UNIV OF POSTS & TELECOMM
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  • Abstract
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Problems solved by technology

The current research work mainly focuses on the improvement of the performance of the main reflector, but there are few studies on the secondary reflector

Method used

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  • Circularly-polarized high-gain antenna based on folded plane reflective array technology
  • Circularly-polarized high-gain antenna based on folded plane reflective array technology
  • Circularly-polarized high-gain antenna based on folded plane reflective array technology

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Embodiment Construction

[0031] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] FSS is a two-dimensional or three-dimensional periodic array structure composed of identical resonant units arranged on a dielectric substrate. In theoretical analysis, FSS is usually regarded as an infinite planar periodic structure. In terms of frequency selection, FSS can transmit electromagnetic waves of a certain frequency band while reflecting electromagnetic waves of another frequency band. In terms of polarization selection, it is sensitive to polarization, and FSS can reflect TE polarized waves and transmit TM polarized waves, or reflect TM polarized waves and transmit TE polarized waves, thereby achieving single-polarized transmission. Therefore, FSS is essentially a combination of "spatial filter" and "spatial reflector". The feed...

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Abstract

The invention discloses a circularly-polarized high-gain antenna based on a folded plane reflective array technology, and relates to the technical field of electromagnetic fields and microwaves. The circularly-polarized high-gain antenna comprises a feed source, a main reflecting surface and an auxiliary reflecting surface. The feed source is located at the phase center of the main reflecting surface, the feed source is arranged at one side of the main reflecting surface, and the auxiliary reflecting surface is arranged at the other side of the main reflecting surface; the auxiliary reflecting surface directly faces the feed source and is parallel to the main reflecting surface; the main reflecting surface consists of a plurality of main reflecting surface units which are arranged into an array, and the auxiliary reflecting surface consists of a plurality of auxiliary reflecting surface units which are arranged into an array in order; the auxiliary reflecting surface unit comprises a first dielectric substrate, a second dielectric substrate, a top emission layer, a middle ground layer, a bottom receiving layer and a first bonding layer. According to the antenna, single-polarization transmission is realized, and meanwhile, the antenna has the function of a polarization converter; the antenna has the characteristics of high gain, low profile and narrow beam, and can radiate circularly polarized waves within a certain frequency band.

Description

technical field [0001] The invention relates to the field of electromagnetic field and microwave technology, in particular to a circularly polarized high-gain antenna based on folded planar reflection array technology. Background technique [0002] Circularly polarized antennas are very effective at combating multipath interference or fading and reducing the "Faraday rotation" effect of the ionosphere. Therefore, circularly polarized antennas are required in applications such as satellite communications and mobile communications. In satellite communication, radio astronomy, radar communication, deep space exploration and other engineering applications, the demand for antennas with high gain, narrow beam, low profile and miniaturization is also increasing. The traditional parabolic antenna is still a widely used high-gain antenna. It has the advantages of simple structure, strong directivity and low sidelobes. There are great limitations in applications in circuits with rel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q19/185H01Q15/24
CPCH01Q19/185H01Q15/244
Inventor 张盼盼朱熙铖
Owner NANJING UNIV OF POSTS & TELECOMM
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