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A reconfigurable array antenna based on a transmissive phased electromagnetic surface

An array antenna and electromagnetic surface technology, which is applied in specific array feeding systems, antennas, antenna arrays, etc., can solve problems such as system cost, weight increase, complex feeding network design, and low antenna radiation efficiency, reaching the scale of the array The effect of strong expandability, low profile, and small feed loss

Pending Publication Date: 2019-01-25
NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Electronically scanned phased array antenna can better overcome the above shortcomings. It not only has fast scanning speed and more flexible performance, but also has a planar or conformal structure that is more conducive to maintaining conformality with the carrier. However, the design of its feed network is complicated, especially when the antenna When the aperture increases, the feed loss is higher, the radiation efficiency of the antenna is lower, and the achievable gain is limited
Although the introduction of solid-state transceiver components in the unit can reduce the feed loss, the cost and weight of the system will be greatly increased, which limits its large-scale application

Method used

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Embodiment Construction

[0024] The technical solutions in the embodiments of the present invention are clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0025] In the following description, a lot of specific details are set forth in order to fully understand the present invention, but the present invention can also be implemented in other ways different from those described here, and those skilled in the art can do it without departing from the meaning of the present invention. By analogy, the present invention is therefore not limited to the specific examples disclosed below.

[0026] Such as figure ...

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Abstract

The invention provides a reconfigurable array antenna based on a transmissive phased electromagnetic surface, comprises a feed source and an array antenna assembly, wherein the feed source is used forproviding a space illumination source for the array antenna assembly and receiving scattered electromagnetic waves of the array antenna assembly, and has the advantages of small feeding loss, fast beam scanning speed, strong array scale expansion, simple structure, low profile, light weight, easy conformal and low cost.

Description

technical field [0001] The invention relates to the technical field of array antennas, in particular to a reconfigurable array antenna based on a transmissive phased electromagnetic surface. Background technique [0002] Beam reconfigurable array antennas with high-gain beam scanning characteristics have a wide range of applications in the field of near-field security imaging. The existing high-gain beam scanning antennas mainly include mechanical rotating parabolic antennas and electronically controlled phased array antennas. Among them, the rotating parabolic antenna has the advantages of simple structure, low cost, and high efficiency, but its shape is a special curved surface, bulky, heavy, and the beam scanning speed is slow, and the servo system requires high requirements. Electronically scanned phased array antenna can better overcome the above shortcomings. It not only has fast scanning speed and more flexible performance, but also has a planar or conformal structur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/38H01Q1/50H01Q3/38H01Q13/02H01Q21/00
CPCH01Q1/38H01Q1/50H01Q3/38H01Q13/02H01Q21/0006
Inventor 董建明
Owner NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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