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A novel dual-band dual-polarized shared-aperture antenna with high isolation

Part of: EuMW Special issue 2019

Published online by Cambridge University Press:  04 May 2020

Jiachen Xu Open the ORCID record for Jiachen Xu [Opens in a new window] ,
Bozhang Lan ,
Jiakai Zhang ,
Chenjiang Guo  and
Jun Ding
Jiachen Xu*
Affiliation:
School of Electronics and Information, Northwestern Polytechnic University, Xi'an 710129, China
Bozhang Lan
Affiliation:
School of Electronics and Information, Northwestern Polytechnic University, Xi'an 710129, China
Jiakai Zhang
Affiliation:
School of Electronics and Information, Northwestern Polytechnic University, Xi'an 710129, China
Chenjiang Guo
Affiliation:
School of Electronics and Information, Northwestern Polytechnic University, Xi'an 710129, China
Jun Ding
Affiliation:
School of Electronics and Information, Northwestern Polytechnic University, Xi'an 710129, China
*
Author for correspondence: JiaChen Xu, E-mail: xujiachen9151@outlook.com
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Abstract

This paper presents a novel dual-band (DB) dual-polarized (DP) shared aperture antenna with high isolation by using a combination of microstrip dipoles and dielectric resonator antennas (DRAs) for S and C bands, respectively. In the S band, two sets of proximity coupled stacked microstrip dipoles which crossed at the center are employed to achieve dual-linear polarization (DLP) and obtain desired bandwidth (BW), isolation, and pure polarization. The rectangle DRA with hybrid feed is selected as the C band element for its advantages of small base area and high isolation, and a 2 × 2 array is presented with the “pair-wise” anti-phase feed technique to achieve a low cross-polarized level. Moreover, benefited from the back feed scheme, the proposed antenna has a symmetrical structure and has the potential of expanding into a larger aperture. The proposed antenna has been manufactured and measured, and the results agree well with simulations, which prove the validity of the proposed design.

Keywords

Dielectric resonator antennasdual-band dual-polarizedshared-apertureisolation
Type
Antenna Design, Modelling and Measurements
Information
International Journal of Microwave and Wireless Technologies , Volume 12 , Special Issue 7: EuMW 2019 Special Issue , September 2020 , pp. 652 - 659
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Copyright
Copyright © Cambridge University Press and the European Microwave Association 2020

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