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Title: Low-RCS reflectarray with phase controllable absorptive frequency-selective reflector
Authors: Huang, Hao
Shen, Zhongxiang
Keywords: Engineering::Electrical and electronic engineering
Issue Date: 2019
Source: Huang, H. & Shen, Z. (2019). Low-RCS reflectarray with phase controllable absorptive frequency-selective reflector. IEEE Transactions On Antennas and Propagation, 67(1), 190-198.
Journal: IEEE Transactions on Antennas and Propagation
Abstract: This paper presents a methodology to control the reflection phase response from a 3-D bandstop structure backed with an absorbing material. An absorptive frequency-selective reflection structure using the cascaded arc-shaped strip resonators and absorbers is utilized to obtain an absorption-reflection-absorption response. The reflection phase response of the structure within the reflection band is then flexibly controlled by top-loaded metallic patches with variable size. An application of this methodology is demonstrated by designing a high-gain and low-radar cross section (RCS) reflectarray. The in-band phase profile of the reflecting surface is constructively designed to collimate the beam in the far field. Meanwhile, the out-of-band scattering from the planar reflector is significantly reduced. Compared with a conventional reflectarray, the radiation performance of the proposed antenna is maintained with an aperture efficiency of 50.1% and directivity of 23.5 dBi. Significant RCS reduction has been achieved with a fractional bandwidth of 76.9% and 17.1% for the lower and upper bands with reduction levels of 10 and 8 dB, respectively.
ISSN: 0018-926X
DOI: 10.1109/TAP.2018.2876708
Rights: © 2018 IEEE. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:EEE Journal Articles

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