Microstrip Line Fed Wideband Circularly-Polarized Dielectric Resonator Antenna Array for Microwave Image Sensing

被引：2

作者：

Rana, Biswarup ^{[1
]}

Parui, Susanta Kumar ^{[1
]}

机构：

[1] Indian Institute of Engineering Science and Technology, Shibpur, Howrah, India

来源：

IEEE Sensors Letters | 2017年 / 1卷 / 03期

关键词：

Antenna arrays - Antenna feeders - Bandwidth - Dielectric resonators - Electric impedance - Microstrip lines - Microwave antennas - Microwave filters - Microwave resonators - Microwave sensors;

D O I：

10.1109/LSENS.2017.2696580

中图分类号：

学科分类号：

摘要：

A high-gain circularly-polarized (CP) wideband rectangular dielectric resonator antenna (DRA) array, fed by microstrip lines, has been proposed for microwave image sensing. Initially, two orthogonal microstrip lines have been used to feed a single element DRA for obtaining circular polarization. A four element linear array has been conceived with such CP-DRA for obtaining higher directive gain, as well as circular polarization. Both single element DRA and four elements DRA array have been fabricated with Arlon AD270 substrate and Emerson & Cuming make Eccostock HIK materials. A 17 (6.27.35 GHz) measured impedance bandwidth and 10 (6.26.85 GHz) measured axial-ratio have been noticed for the proposed DRA array. The peak gain of the proposed DRA array varies between 12.113.6dBi over the entire axial-ratio bandwidth with a maximum gain of 13.6dBi. The simulated and measured results show good agreement. © 2017 IEEE.

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