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Wideband and high-gain circularly-polarized L-shaped slot antenna array using metamaterial

Published online by Cambridge University Press:  02 July 2020

Qiang Chen Open the ORCID record for Qiang Chen [Opens in a new window] ,
Guolin Zhang ,
Changhui He ,
Ya Fan ,
Zhenbo Zhu ,
Di Zhang ,
Jing Li  and
Yuanqing Zhao
Qiang Chen*
Affiliation:
Air Force Early Warning Academy, Wuhan, Hubei430019, China
Guolin Zhang
Affiliation:
School of Mathematical and Computer Science, Yichun University, Yichun, Jiangxi336000, China
Changhui He
Affiliation:
Air Force Early Warning Academy, Wuhan, Hubei430019, China
Ya Fan
Affiliation:
Air Force Early Warning Academy, Wuhan, Hubei430019, China
Zhenbo Zhu
Affiliation:
Air Force Early Warning Academy, Wuhan, Hubei430019, China
Di Zhang
Affiliation:
Air Force Early Warning Academy, Wuhan, Hubei430019, China
Jing Li
Affiliation:
Air Force Early Warning Academy, Wuhan, Hubei430019, China
Yuanqing Zhao
Affiliation:
The 93552 Troop of Chinese People's Liberation Army, Shijiazhuang, China
*
Author for correspondence: Qiang Chen, E-mail: cqky1989@126.com
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Abstract

This research involves a compact wideband circularly-polarized antenna array, which consists of a sequential rotating phase feed network, 2 × 2 mushroom-type metamaterial (MTM) unit, and so on. Each antenna array unit contains a microstrip feedline, an L-shaped slot antenna, and so on. The MTM-based antennas were incorporated with a sequential-phase network of sequentially rotated series-parallel feed to achieve wideband operation. The operational bandwidth and the radiation model in the high-frequency area were improved through the adjustment of spacing between the L-shaped slots while maintaining the size and structure of the MTM. The proposed design had dimensions of 80 mm × 80 mm × 3.5 mm (~1.64 λ0 × 1.64 λ0 × 0.072 λ0 at 6.15 GHz), and it was simulated, fabricated, and tested.

Keywords

Circularly polarizedL-shaped slotmushroom metamaterialwideband
Type
Metamaterials and Photonic Bandgap Structures
Information
International Journal of Microwave and Wireless Technologies , Volume 13 , Issue 4 , May 2021 , pp. 359 - 364
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Copyright
Copyright © Cambridge University Press and the European Microwave Association 2020

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