Asymmetrical Low-RCS FSS-Based Antenna for Tri-Band Shared-Aperture Array

This letter proposes an asymmetrical low-radar cross section (RCS) frequency selective surface (FSS)-based low-band (LB: 1.7-2.7 GHz) antenna for the application in tri-band shared-aperture array. In the array, high-band 1 (HB1: 3.3-3.8 GHz) antennas and HB2 (4.8-5 GHz) antennas are distributed on t...

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Bibliographic Details
Published in:IEEE antennas and wireless propagation letters Vol. 23; no. 5; pp. 1563 - 1567
Main Authors: Chen, Jian-Xin, Wang, Xiao-Fan, Yang, Ling-Ling, Wang, Xue-Ren, Gu, Xiao-Feng, Yang, Wen-Wen
Format: Journal Article
Language:English
Published: New York IEEE 01.05.2024
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects:
Antenna arrays
Antenna measurements
Antenna radiation patterns
Antennas
Aperture antennas
Apertures
Arrays
Asymmetrical antenna/array
Bandwidth
electromagnetic (EM) transparency
frequency selective surface (FSS)-based antenna
Frequency selective surfaces
Loaded antennas
low radar cross section (RCS)
Radar cross sections
tri-band array
Unit cell
ISSN:1536-1225, 1548-5757
Online Access:Get full text
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Summary:This letter proposes an asymmetrical low-radar cross section (RCS) frequency selective surface (FSS)-based low-band (LB: 1.7-2.7 GHz) antenna for the application in tri-band shared-aperture array. In the array, high-band 1 (HB1: 3.3-3.8 GHz) antennas and HB2 (4.8-5 GHz) antennas are distributed on the two sides of the asymmetric LB antenna with four FSS unit cells. The bandpass property of the FSS unit cell is formed after inserting a patch into the square loop, meanwhile, it can be controlled by cutting the patch into more pieces. To respectively suppress the blockage effect of the LB antenna on the two-side HB1 and HB2 antennas, a low-RCS FSS-based LB antenna is constructed asymmetrically by placing two kinds of low-RCS FSS unit cells with different patch pieces. Importantly, the low-RCS characteristic of the FSS unit cells on both bands and LB working performance can be independently controlled, so that good performance for both them can be obtained, without time-consuming optimization. Finally, the LB blockage effect on the entire HB1 and HB1 has been significantly reduced as expected and good agreement is achieved between the simulation and experiment.
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ISSN:1536-1225
1548-5757
DOI:10.1109/LAWP.2024.3362745