A Simple Structure Dual-Band Dual-Circularly Polarized Antenna With Controlled Frequency Ratio

Xian Jing Lin; Zhen Hua Wu; Shan Jin Wang; Zeng Pei Zhong; Ying Xin Lai; Yao Zhang

doi:10.1109/ACCESS.2022.3225450

IEEE Access (Jan 2022)

A Simple Structure Dual-Band Dual-Circularly Polarized Antenna With Controlled Frequency Ratio

Xian Jing Lin,
Zhen Hua Wu,
Shan Jin Wang,
Zeng Pei Zhong,
Ying Xin Lai,
Yao Zhang

Affiliations

Xian Jing Lin: ORCiD; School of Electronic Engineering and Intelligence, Dongguan University of Technology, Dongguan, China
Zhen Hua Wu: School of Electronic Engineering and Intelligence, Dongguan University of Technology, Dongguan, China
Shan Jin Wang: School of Electronic Engineering and Intelligence, Dongguan University of Technology, Dongguan, China
Zeng Pei Zhong: Institute of Electromagnetics and Acoustics, Xiamen University, Xiamen, China
Ying Xin Lai: Institute of Electromagnetics and Acoustics, Xiamen University, Xiamen, China
Yao Zhang: Institute of Electromagnetics and Acoustics, Xiamen University, Xiamen, China

DOI: https://doi.org/10.1109/ACCESS.2022.3225450
Journal volume & issue: Vol. 10
pp. 126687 – 126694

Abstract

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This paper proposes a dual-band dual-circularly polarized (CP) aperture-coupled patch antenna with controlled frequency ratio. By simply etching a modified S-shaped slot at the central of a circular patch, dual-band dual-CP operation is realized. In addition, the frequency ratio of the two CP bands can be controlled by optimizing the length parameters of the S-shaped slot arms. As a result, the frequency ratio can be tuned from 1.12 to 1.46 according to different requirements. For demonstration, the circularly polarized patch antenna operating at 3.42 and 3.85 GHz is manufactured and tested. The measured 3-dB axial-ratio (AR) bandwidth is 1.1% and 2.3% for the right-hand circular polarization (RHCP) and left-hand circular polarization (LHCP), respectively. The measured gains at the lower and upper bands are 9.4 and 9.8 dBic, respectively.

Published in IEEE Access

ISSN: 2169-3536 (Online)
Publisher: IEEE
Country of publisher: United States
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering
Website: https://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=6287639

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