Title :
Characterization of leaky wave antenna and active gain enhancement
Author :
Chen, Min ; Chang, Howard Z. ; Houshmand, Bijan ; Itoh, Tatsuo
Author_Institution :
Department of Electrical Engineering, University of California, Los Angeles, 405 Hilgard Avenue, Los Angeles, CA 90095, USA
Abstract :
The leaky wave antenna has been characterized using the 3-D FDTD method, and its employment of the active gain enhancement scheme has been experimentally investigated. The structure analyzed in the FDTD analysis is a rectangular dielectric rod periodically loaded with metal strips, and launching effects are included into the analysis. In the active gain enhancement experiment, the antenna is made of a periodically loaded microstrip line with active gain elements placed to compensate for radiation as well as waveguide loss. This novel antenna possesses a larger effective aperture, higher gain, and narrower beam width as compared to a passive antenna with similar dimensions. Results of the FDTD analysis and active gain enhancement investigation are confirmed by experiments.
Keywords :
Antennas and propagation; Aperture antennas; Dielectric losses; Dielectric substrates; Finite difference methods; Leaky wave antennas; Loaded antennas; Microstrip antennas; Propagation losses; Time domain analysis;
Conference_Titel :
Microwave Conference, 1996. 26th European
Conference_Location :
Prague, Czech Republic
DOI :
10.1109/EUMA.1996.337647
