A Reflectarray Antenna Designed with Gain Filtering and Low RCS Properties

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Abstract

This paper presents a reflectarray (RA) antenna operating at X-band with gain filtering and low radar cross section (RCS) properties. The unit cell (UC) for the proposed RA antenna design combines a band-notched absorber unit and a dielectric lens unit together, where the dielectric lens unit serving as a phase shift is seamlessly coating on the absorber unit to achieve co-design. Importantly, it is required that the UCs should still maintain the high notch-band-edge selectivity property that the band-notched absorber originally has when the profile of the dielectric lens unit is varied to cover a full phase-cycle (2π) for the proposed RA antenna design. For demonstration, an absorber is presented with a high notch-band-edge selectivity and a wide absorption bandwidth performance in vertical and horizontal polarization, respectively; a dielectric lens based on square posts is rigorously designed to be coated on the absorber seamlessly to construct the desired UC. The simulated results show that the proposed RA antenna has a bandpass-like gain filtering performance and pencil-beam radiation patterns within the notch band, which is experimentally verified by the measured results. In addition, the measured results also reveal the RCSs of the proposed RA antenna are reduced significantly compared to counterparts of the conventional RA antenna in horizontal polarization and out of the notch band in vertical polarization.
Original languageEnglish
JournalI E E E Transactions on Antennas and Propagation
ISSN0018-926X
DOIs
Publication statusE-pub ahead of print - 17 Apr 2019

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Radar cross section
Antennas
Lenses
Polarization
Phase shift
Demonstrations
Bandwidth
Coatings

Cite this

@article{e7515977d2b8456d899e6a8d2de0533f,
title = "A Reflectarray Antenna Designed with Gain Filtering and Low RCS Properties",
abstract = "This paper presents a reflectarray (RA) antenna operating at X-band with gain filtering and low radar cross section (RCS) properties. The unit cell (UC) for the proposed RA antenna design combines a band-notched absorber unit and a dielectric lens unit together, where the dielectric lens unit serving as a phase shift is seamlessly coating on the absorber unit to achieve co-design. Importantly, it is required that the UCs should still maintain the high notch-band-edge selectivity property that the band-notched absorber originally has when the profile of the dielectric lens unit is varied to cover a full phase-cycle (2π) for the proposed RA antenna design. For demonstration, an absorber is presented with a high notch-band-edge selectivity and a wide absorption bandwidth performance in vertical and horizontal polarization, respectively; a dielectric lens based on square posts is rigorously designed to be coated on the absorber seamlessly to construct the desired UC. The simulated results show that the proposed RA antenna has a bandpass-like gain filtering performance and pencil-beam radiation patterns within the notch band, which is experimentally verified by the measured results. In addition, the measured results also reveal the RCSs of the proposed RA antenna are reduced significantly compared to counterparts of the conventional RA antenna in horizontal polarization and out of the notch band in vertical polarization.",
author = "Peng Mei and Shuai Zhang and Yang Cai and Xianqi Lin and Pedersen, {Gert Fr{\o}lund}",
year = "2019",
month = "4",
day = "17",
doi = "10.1109/TAP.2019.2911342",
language = "English",
journal = "I E E E Transactions on Antennas and Propagation",
issn = "0018-926X",
publisher = "IEEE",

}

A Reflectarray Antenna Designed with Gain Filtering and Low RCS Properties. / Mei, Peng; Zhang, Shuai; Cai, Yang; Lin, Xianqi; Pedersen, Gert Frølund.

In: I E E E Transactions on Antennas and Propagation, 17.04.2019.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - A Reflectarray Antenna Designed with Gain Filtering and Low RCS Properties

AU - Mei, Peng

AU - Zhang, Shuai

AU - Cai, Yang

AU - Lin, Xianqi

AU - Pedersen, Gert Frølund

PY - 2019/4/17

Y1 - 2019/4/17

N2 - This paper presents a reflectarray (RA) antenna operating at X-band with gain filtering and low radar cross section (RCS) properties. The unit cell (UC) for the proposed RA antenna design combines a band-notched absorber unit and a dielectric lens unit together, where the dielectric lens unit serving as a phase shift is seamlessly coating on the absorber unit to achieve co-design. Importantly, it is required that the UCs should still maintain the high notch-band-edge selectivity property that the band-notched absorber originally has when the profile of the dielectric lens unit is varied to cover a full phase-cycle (2π) for the proposed RA antenna design. For demonstration, an absorber is presented with a high notch-band-edge selectivity and a wide absorption bandwidth performance in vertical and horizontal polarization, respectively; a dielectric lens based on square posts is rigorously designed to be coated on the absorber seamlessly to construct the desired UC. The simulated results show that the proposed RA antenna has a bandpass-like gain filtering performance and pencil-beam radiation patterns within the notch band, which is experimentally verified by the measured results. In addition, the measured results also reveal the RCSs of the proposed RA antenna are reduced significantly compared to counterparts of the conventional RA antenna in horizontal polarization and out of the notch band in vertical polarization.

AB - This paper presents a reflectarray (RA) antenna operating at X-band with gain filtering and low radar cross section (RCS) properties. The unit cell (UC) for the proposed RA antenna design combines a band-notched absorber unit and a dielectric lens unit together, where the dielectric lens unit serving as a phase shift is seamlessly coating on the absorber unit to achieve co-design. Importantly, it is required that the UCs should still maintain the high notch-band-edge selectivity property that the band-notched absorber originally has when the profile of the dielectric lens unit is varied to cover a full phase-cycle (2π) for the proposed RA antenna design. For demonstration, an absorber is presented with a high notch-band-edge selectivity and a wide absorption bandwidth performance in vertical and horizontal polarization, respectively; a dielectric lens based on square posts is rigorously designed to be coated on the absorber seamlessly to construct the desired UC. The simulated results show that the proposed RA antenna has a bandpass-like gain filtering performance and pencil-beam radiation patterns within the notch band, which is experimentally verified by the measured results. In addition, the measured results also reveal the RCSs of the proposed RA antenna are reduced significantly compared to counterparts of the conventional RA antenna in horizontal polarization and out of the notch band in vertical polarization.

U2 - 10.1109/TAP.2019.2911342

DO - 10.1109/TAP.2019.2911342

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JO - I E E E Transactions on Antennas and Propagation

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SN - 0018-926X

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