Dual-Polarized Slot-Coupled Microstrip Antenna Array With Stable Active Element Pattern

Author

Yan Wang ; Zhengwei Du

Author_Institution

Dept. of Electron. Eng., Tsinghua Univ., Beijing, China

Volume

63

Issue

9

fYear

2015

Firstpage

4239

Lastpage

4244

Abstract

A dual-polarized slot-coupled microstrip antenna array with stable active element pattern is investigated. The antenna element of the array is a slot-coupled microstrip antenna with a reflector. The effect of the ground size on the radiation pattern of the antenna element is analyzed based on the electric field and current distributions. The method of adding copper pillars around the antenna element is proposed to mitigate the influence of the ground plane. A prototype of 1 × 3 microstrip antenna array is fabricated and measured. Its measured impedance bandwidth for VSWR <; 2 is 520 MHz (1.69-2.21 GHz). Within the operating band, the performances of low mutual coupling, low cross polarization, and stable active element pattern are achieved.

Keywords

antenna radiation patterns; microstrip antenna arrays; reflector antennas; active element pattern stability; antenna element radiation pattern; copper pillars; dual-polarized slot-coupled microstrip antenna array; low cross polarization; reflector; Antenna measurements; Antenna radiation patterns; Arrays; Copper; Microstrip; Microstrip antenna arrays; Microstrip antennas; Active element pattern; Slot-coupled feeding; active element pattern; array antenna; dual polarization; microstrip antenna; slot-coupled feeding;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/TAP.2015.2452958

Filename

7150347