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A broadband Butler-based dual-polarized omni-directional antenna

Published online by Cambridge University Press:  05 April 2023

Xiaoqing Wu Open the ORCID record for Xiaoqing Wu [Opens in a new window] ,
Lin-Ping Shen  and
Lijun Zhang
Xiaoqing Wu*
Affiliation:
School of Electronic and Information Engineering, Soochow University, Suzhou, China
Lin-Ping Shen
Affiliation:
Antenna Research Group, Communication Components Antenna Inc (CCAI), Ottawa, Ontario K2K 2T8, Canada
Lijun Zhang
Affiliation:
School of Electronic and Information Engineering, Soochow University, Suzhou, China
*
Author for correspondence: Xiaoqing Wu, E-mail: [email protected]
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Abstract

This paper presents a broadband Butler-based slant ±45° dual-polarized omni-directional antenna working at the frequency band of 1.69–2.69 GHz for extending wireless communication network capacity in the limited service size. The proposed antenna realizes a 360° full coverage with wider bandwidth in a compact cylinder and increases the network capacity to 6 × 6 MIMO instead of using three traditional 2 × 2 MIMO omni-directional antennas. Theoretical analysis, simulation, and fabrication are conducted to validate the idea of the proposed omni-directional antenna. The measured results show 46% bandwidth with 15 dB return loss, 2.2 dB azimuth null and 8.9–10.5 dBi gain for port-C with 0° phase increment, and 14.1 dB azimuth null and 9.6–10.6 dBi gain for port-L/R (left/right) with ±120° phase increment, respectively.

Keywords

Antenna designmodeling and measurementspassive components and circuits
Type
Passive Components and Circuits
Information
International Journal of Microwave and Wireless Technologies , Volume 15 , Issue 9 , November 2023 , pp. 1507 - 1513
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Copyright
Copyright © The Author(s), 2023. Published by Cambridge University Press in association with the European Microwave Association

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