A Dual-Band High-Gain Resonant Cavity Antenna With Orthogonal Polarizations

Author

Moghadas, Hamid ; Daneshmand, Mojgan ; Mousavi, Pedram

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of Alberta, Edmonton, AB, Canada

Volume

10

fYear

2011

fDate

7/3/1905 12:00:00 AM

Firstpage

1220

Lastpage

1223

Abstract

In this letter, a new study on the theory and the design of a dual-band dual-polarized high-gain resonant cavity antenna (RCA) is presented. The RCA includes two layers of orthogonal dipole arrays each located at a designated height above the ground plane of a microstrip patch antenna. A prototype is fabricated, and the measured results confirm the theory. The measured prototype has a lower-band gain of 19.6 dBi with the vertical polarization (V-pol) at 10 GHz and the upper band gain of 18 dBi with horizontal polarization (H-pol) at 11.6 GHz. The cross polarization (Xpol) is better than -27 dB at each band. It is demonstrated that the separation between the two bands is controlled arbitrarily.

Keywords

dipole antenna arrays; microstrip antenna arrays; microwave antenna arrays; multifrequency antennas; polarisation; RCA; cross polarization; dual-band high-gain resonant cavity antenna; frequency 10 GHz; frequency 11.6 GHz; microstrip patch antenna; orthogonal dipole arrays; orthogonal polarizations; vertical polarization; Antenna measurements; Dual band; Gain; Microstrip; Microstrip antennas; Patch antennas; Reflection; Aperture antennas; cavity resonators; frequency selective surfaces (FSSs); microstrip antennas; polarization;

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2011.2173454

Filename

6060853