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Compact line source generator for feeding continuous transverse stub arrays

Published online by Cambridge University Press:  22 December 2021

Houtong Qiu Open the ORCID record for Houtong Qiu [Opens in a new window] ,
Xue-Xia Yang ,
Meiling Li  and
Zixuan Yi
Houtong Qiu
Affiliation:
School of Communication and Information Engineering, Shanghai University, Shanghai 200444, China
Xue-Xia Yang*
Affiliation:
School of Communication and Information Engineering, Shanghai University, Shanghai 200444, China Key Laboratory of Specialty Fiber Optics and Optical Access Networks, Shanghai University, Shanghai 200444, China
Meiling Li
Affiliation:
School of Communication and Information Engineering, Shanghai University, Shanghai 200444, China
Zixuan Yi
Affiliation:
School of Communication and Information Engineering, Shanghai University, Shanghai 200444, China
*
Author for correspondence: Xue-Xia Yang, E-mail: yang.xx@shu.edu.cn
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Abstract

Based on a substrate integrated lens (SIL), a compact line source generator (LSG) for feeding continuous transverse stub (CTS) arrays with linear-polarized (LP) beam scanning and dual-polarized (DP) operations is presented in this paper. The SIL consists of metamaterial cells with different sizes being arranged as concentric annulus and is printed on the center surface of two substrate layers. The SIL can convert the cylindrical wave generated by the feed probe of SIW-horn to the planar wave for feeding the CTS array. This rotationally symmetric SIL can be used conveniently to design LSG for feeding CTS arrays with the continuous beam scanning and DP operations, which has been verified by the fabrications and measurements. By simply rotating the SIW-horn along the edge of SIL, the 10-element LP-CTS array obtains a measured beam scanning range of ±35° with the highest gain of 20.6 dBi. By setting two orthogonal SIW-horns at the edge of the proposed SIL, the nine-element DP-CTS array with orthogonal radiation stubs is excited. The DP array obtains the gain of 20.3 dBi at the center frequency with the isolation of 28 dB and the cross-polarization level <−25 dB.

Keywords

Line source generator (LSG)Continuous transverse stub (CTS)Substrate-integrated lens (SIL)Substrate integrated waveguide (SIW)Dual-polarized (DP)Beam scanning
Type
Antenna Design, Modelling and Measurements
Information
International Journal of Microwave and Wireless Technologies , Volume 14 , Issue 9 , November 2022 , pp. 1087 - 1098
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Copyright
Copyright © The Author(s), 2021. Published by Cambridge University Press in association with the European Microwave Association

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