An innovative way of using coherently radiating periodic structures for phased arrays with reduced number of phase shifters

Date

2021

Authors

Juárez, Elizvan
Panduro, Marco A.
Covarrubias, David H.
Reyna, Alberto
Sánchez, Brian

Director

Publisher

IEEE
Acceso abierto / Sarbide irekia
Artículo / Artikulua
Versión aceptada / Onetsi den bertsioa

Project identifier

Impacto

Abstract

This article presents an innovative design technique for feeding phase antenna arrays using coherently radiating periodic structure (CORPS) technology for reducing the number of phase shifters (PSs) in limited-scan applications with low sidelobe level (SLL). The proposed configuration is implemented taking advantage of the phase interpolation property of a CORPS network of one layer. This configuration is built by interconnecting 2×3 CORPS networks in a strategic way in order to provide a reduction in the number of PSs while maintaining the scanning capability. Experimental results and full-wave simulations based on CST Microwave Studio reveal that the proposed design technique reduces the recombination losses and generates a better phase slope with respect to the basic CORPS network providing a reduction in the number of PSs. As a novel contribution, this article provides the full antenna system design in order to analyze and study the PSs reduction performance and scanning capabilities of the proposed technique to feed linear antenna arrays. The proposed design technique provides a reduction in the number of PSs for a scanning range of ±25° in linear arrays. The array design model includes the application of the raised cosine amplitude distribution to generate a radiation pattern with minimum SLL. The linear array system was validated by experimental measurements of the full system prototype and full-wave simulations results are provided to verify the accuracy of the array model and to take mutual coupling into account. The proposed case provides a good design compromise with respect to other cases in the state of the art.

Description

Keywords

Phased array, CORPS network, Linear array, Planar array, Beam-scanning, Side lobe level

Department

Institute of Smart Cities - ISC

Faculty/School

Degree

Doctorate program

item.page.cita

E. Juárez, M. A. Panduro Mendoza, D. H. Covarrubias, A. R. Maldonado, B. Sanchez and C. d. Rio, 'An Innovative Way of Using Coherently Radiating Periodic Structures for Phased Arrays With Reduced Number of Phase Shifters,' in IEEE Transactions on Antennas and Propagation, vol. 70, no. 1, pp. 307-316, Jan. 2022, doi: 10.1109/TAP.2021.3096989.

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