A Cavity-Backed Slot Espar E-Plane Array

Keywords

beam steering; cavity-backed antennas; phased arrays; slot antennas; tunable circuits and devices

Abstract

A three-element cavity-backed slot ESPAR E-plane array is proposed in this paper. As with conventional ESPAR antennas, the parasitic cavities are fed by mutually coupling to the center cavity and each parasitic cavity is terminated with a tunable capacitor that provides the necessary phase shift for the desired beam scanning performance. Due to the difficulty of achieving E-plane coupling while simultaneously controlling the coupling level and phase, there have been few reported E-plane ESPAR antennas in the literature. In this paper, it is shown that these challenges can be overcome by exploiting the cavity geometry to achieve the desired coupling values; the required phase shift is achieved by changing the load impedance of the parasitic cavities. In full-wave simulations, it is observed that the proposed ESPAR E-plane array is able to steer the beam from-30 to 30 degrees, which is comparable to the beam-steering range of ESPAR antennas operating in the H-plane.

Publication Date

5-16-2017

Publication Title

2017 IEEE 18th Wireless and Microwave Technology Conference, WAMICON 2017

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.1109/WAMICON.2017.7930255

Socpus ID

85021445559 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/85021445559

This document is currently not available here.

Share

COinS