A Compact Wideband Millimeter-Wave Polarization-Reconfigurable Antenna Array

IF 3.7 2区计算机科学 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Antennas and Wireless Propagation Letters Pub Date : 2024-12-09 DOI:10.1109/LAWP.2024.3512792

Maharana Pratap Singh;Takashi Tomura;Jiro Hirokawa;Saptarshi Ghosh

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引用次数: 0

Abstract

This letter presents a wideband polarization-reconfigurable millimeter-wave antenna array using a compact feed network. The proposed geometry employs a Y-shaped feedline with a pair of p-i-n diodes to demonstrate a switching operation among three distinct polarizations: left-handed circular polarization (LHCP), right-handed circular polarization (RHCP), and linear polarization (LP). Two similar radiating segments, each comprising a pair of parasitic trapezoidal patches and three suspended metallic vias in a multilayer design, are excited through an aperture coupling technique. By careful optimization, the structure achieves the LHCP operation with a 3 dB axial ratio bandwidth (ARBW) of 24.0% and an impedance bandwidth (|S₁₁| < −10 dB) of 30.3%, the RHCP operation with corresponding parameters as 21.7% and 24.0%, and the LP response with an impedance bandwidth of 27.45%, as well as attains a good peak gain of 6.7 ± 1.0 dBic/dBi for all states in the broadside direction. To further enhance the performance, an antenna array with 2 × 2 elements is developed with an innovative feed network, showing an ARBW of 19.61% and 23.87% for LHCP and RHCP radiation, respectively, and a significant gain enhancement of 11.7 ± 1.0 dBic/dBi. The geometries have been fabricated and measured, showing satisfactory resemblance between the responses.

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来源期刊

IEEE Antennas and Wireless Propagation Letters 工程技术-电信学

CiteScore

8.00

自引率

9.50%

发文量

529

审稿时长

1.0 months

期刊介绍： IEEE Antennas and Wireless Propagation Letters (AWP Letters) is devoted to the rapid electronic publication of short manuscripts in the technical areas of Antennas and Wireless Propagation. These are areas of competence for the IEEE Antennas and Propagation Society (AP-S). AWPL aims to be one of the "fastest" journals among IEEE publications. This means that for papers that are eventually accepted, it is intended that an author may expect his or her paper to appear in IEEE Xplore, on average, around two months after submission.