Home // SPACOMM 2013, The Fifth International Conference on Advances in Satellite and Space Communications // View article

Development of Wideband Dual Polarized of Microstrip Antennas for Microwave Remote Sensing

Authors:
Akbar Eslami
Manohar Deshpande
James Lee
Henry Mishoe
Jamiiru Luttamaguzi
Ehsan Sheybani

Keywords: microstrip; L-band antenna; microwave; NASA.

Abstract:
A novel wideband dual polarized L-band antenna for NASA’s microwave remote sensing applications has been designed, fabricated, and validated. The novel antenna structure consists of a rectangular microstrip antenna excited by capacitive coupled four probes. One of the linear polarizations is obtained by feeding two diagonally opposite probes with equal but out of phase signals. Other orthogonal polarization is obtained by feeding other remaining probes with equal but out of phase signals. The novel structure provides the band width in excess of 500 MHz (with the center frequency of 1.3 GHz) and the cross polarization below -40 dB. For validation purpose, two prototype antennas were fabricated and tested. The test results collected show relatively good agreement with simulation results. For achieving wider band width, it is required to use, in our design, the probes with diameter larger than conventional coaxial connector. A novel feed structure using larger size cylindrical via is designed. The new feed structure design is fabricated and validated before its integration with the antenna.

Pages: 23 to 27

Copyright: Copyright (c) IARIA, 2013

Publication date: April 21, 2013

Published in: conference

ISSN: 2308-4480

ISBN: 978-1-61208-264-6

Location: Venice, Italy

Dates: from April 21, 2013 to April 26, 2013