Wideband Folded Reflectarray With Integrated Single-Layer Differential Slot Feed

A wideband folded reflectarray antenna (FRA) is proposed in this letter. The differential slot feed employs a 180° feeding network for in-phase radiation. It is inherently integrated with the main reflector of FRA in a single-layer printed circuit board (PCB). Meanwhile, multiresonance unit is desig...

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Published in:IEEE antennas and wireless propagation letters 2024-01, Vol.23 (1), p.74-78
Main Authors: Shen, Yizhu, Pan, Jiajia, Xue, Song, Hu, Sanming
Format: Article
Language:English
Subjects:
Antenna arrays
Antenna feeds
Antenna radiation patterns
Apertures
Bandwidths
Broadband
Circuit boards
Circuit design
Differential feed
Feeds
folded reflectarray antenna (FRA)
Impedance
integrated
Printed circuits
single-layer
Slot antennas
Wideband
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cited_by cdi_FETCH-LOGICAL-c294t-2d7c97fa34e02e39626344515e7f7a9429edf37c7f49fb50049173e51cf711a33
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container_title IEEE antennas and wireless propagation letters
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creator Shen, Yizhu
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Xue, Song
Hu, Sanming
description A wideband folded reflectarray antenna (FRA) is proposed in this letter. The differential slot feed employs a 180° feeding network for in-phase radiation. It is inherently integrated with the main reflector of FRA in a single-layer printed circuit board (PCB). Meanwhile, multiresonance unit is designed to achieve a wide bandwidth and a phase range exceeding 360°. To validate the proposed method, a 40 GHz FRA with an electrical size of 12.4 × 12.4 λ 0 2 is designed and fabricated. The measurement results show a 10 dB impedance bandwidth of 22.7% and a 3 dB gain bandwidth of 21.6%. Moreover, the maximum gain is 28.6 dBi with aperture efficiency of 39.3%. Compared with the published FRAs using planar integrated feed, the proposed FRA widely expands the impedance and gain bandwidth. It also features low profile, low cost, high aperture efficiency, and easy integration with active front ends.
doi_str_mv 10.1109/LAWP.2023.3317397
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source IEEE Electronic Library (IEL) Journals
subjects Antenna arrays
Antenna feeds
Antenna radiation patterns
Apertures
Bandwidths
Broadband
Circuit boards
Circuit design
Differential feed
Feeds
folded reflectarray antenna (FRA)
Impedance
integrated
Printed circuits
single-layer
Slot antennas
Wideband
title Wideband Folded Reflectarray With Integrated Single-Layer Differential Slot Feed
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