Title :
45° linearly polarised post-wall waveguide-fed parallel-plate slot arrays
Author :
Hirokawa, J. ; Ando, M.
Author_Institution :
Dept. of Electr. & Electron. Eng., Tokyo Inst. of Technol., Japan
fDate :
12/1/2000 12:00:00 AM
Abstract :
A new configuration of three slots is proposed to radiate a 45° linearly polarised wave in post-wall waveguide-fed parallel plate slot arrays. The configuration consists of one radiating slot tilted to give the desired polarisation and two parallel λ/2-spaced reflection-cancelling slots without radiation in the boresight. A uniform aperture field is designed in a 76 GHz antenna. A good cross-polarisation level below -28 dB is achieved in the boresight. A gain of 29.8 dBi is obtained with 46.4% efficiency in a 5 cm square antenna
Keywords :
antenna radiation patterns; electromagnetic wave polarisation; millimetre wave antenna arrays; parallel plate waveguides; slot antenna arrays; 29 dB; 45° linearly polarised wave; 46.4 percent; 76 GHz; 76 GHz antenna; antenna gain; boresight; cross-polarisation level; parallel λ/2-spaced reflection-cancelling slots; post-wall waveguide-fed parallel-plate slot arrays; radiating slot; three slots configuration; uniform aperture field;
Journal_Title :
Microwaves, Antennas and Propagation, IEE Proceedings
DOI :
10.1049/ip-map:20000795
