Title :
Post-wall waveguide slot array antennas
Author :
Hirokawa, Jiro ; Ando, Makoto
Author_Institution :
Dept. of Electrical & Electronic Eng., Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku. 152-8552, Japan
Abstract :
This paper presents the up-to-date results of the post-wall waveguide slot array antennas. The guide wavelength of post-wall waveguide is discussed as a function of the post diameter and the post spacing by solving an eigen-value problem. The efficiency of the post-wall waveguide fed parallel plate slot array antennas is presented as a function of the antenna size. The center-feed is proposed in the parallel-plate antenna to fix the main-beam direction and enhance the gain bandwidth. We describe the beam-switching antenna by integrating a Butler matrix with slot array antennas in a single-layer dielectric substrate.
Keywords :
Antenna arrays; Antenna feeds; Antennas and propagation; Bandwidth; Butler matrix; Current; Dielectric substrates; Directive antennas; Slot antennas; Waveguide components;
Conference_Titel :
Antennas and Propagation, 2006. EuCAP 2006. First European Conference on
Conference_Location :
Nice
Print_ISBN :
978-92-9092-937-6
DOI :
10.1109/EUCAP.2006.4584866
