The Periodic Half-Width Microstrip Leaky-Wave Antenna With a Backward to Forward Scanning Capability

Author

Li, Yuanxin ; Xue, Quan ; Yung, Edward Kai-Ning ; Long, Yunliang

Author_Institution

Dept. of Electron. & Commun. Eng., Sun Yat-Sen Univ., Guangzhou, China

Volume

58

Issue

3

fYear

2010

fDate

3/1/2010 12:00:00 AM

Firstpage

963

Lastpage

966

Abstract

The periodic half-width microstrip leaky wave antenna (MLWA) with a backward to forward scanning capability is presented in this paper. The proposed antenna consists of a series of half-width MLWA. The radiating periods place on the different sides of the transmission line. The radiating period works in cutoff region of the first higher order mode, the periodic construction radiates the slow wave out along the edge. The experimental results show the main lobe scans electronically and continuously from 149?? to 28?? in H-plane ( y-z plane) toward end fire (+ z direction) when the operating frequency increases from 4.2-.9 GHz.

Keywords

antenna radiation patterns; leaky wave antennas; microstrip antennas; microstrip lines; scanning antennas; backward to forward scanning; frequency 4.2 GHz to 9 GHz; half-width MLWA; lobe scans; periodic half-width microstrip leaky-wave antenna; transmission line; Attenuation; Automobiles; Consumer products; Fires; Frequency; Helium; Leaky wave antennas; Microstrip antennas; Phased arrays; Radar antennas; Structural beams; Backward to forward; half-width microstrip leaky wave antenna (MLWA); periodic;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/TAP.2009.2039304

Filename

5361344