Circularly polarized composite right/left-handed leaky-wave antenna

Author

Hashemi, Mohammed Reza M ; Itoh, Tatsuo

Author_Institution

Dept. of Electr. Eng., Univ. of California, Los Angeles, CA, USA

fYear

2010

fDate

Aug. 28 2010-Sept. 3 2010

Firstpage

1

Lastpage

4

Abstract

In this paper a circular polarized (CP) composite right/left-handed (CRLH) leaky-wave antenna (LWA) is presented. This CP CRLH LWA consists of two 25-cell conventional CRLH LWAs oriented orthogonal to each other which are connected to a quadrature hybrid coupler for 90° phase difference feeding purpose. This antenna maintains its CP characteristic while performing continuous frequency beam scanning from backward direction to forward direction including broadside radiation. To illustrate the scanning CP characteristics of this CRLH LWA, axial ratio and radiation patterns are obtained and shown for three frequencies of 3.4GHz (backward), 3.7GHz (broadside) and 4.3GHz (forward).

Keywords

antenna radiation patterns; leaky wave antennas; polarisation; axial ratio; broadside radiation; circularly polarized composite right/left-handed leaky-wave antenna; frequency 3.4 GHz; frequency 3.7 GHz; frequency 4.3 GHz; frequency beam scanning; quadrature hybrid coupler; radiation patterns; Antenna radiation patterns; Couplers; Dispersion; Leaky wave antennas; Microwave antennas; Microwave theory and techniques;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Information Technology and Systems (ICWITS), 2010 IEEE International Conference on

Conference_Location

Honolulu, HI

Print_ISBN

978-1-4244-7091-4

Type

conf

DOI

10.1109/ICWITS.2010.5612258

Filename

5612258