Title :
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
fDate :
3/1/2010 12:00:00 AM
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;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2009.2039304
