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45° linearly polarised post-wall waveguide-fed parallel-plate slot arrays

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2 Author(s)
Hirokawa, J. ; Dept. of Electr. & Electron. Eng., Tokyo Inst. of Technol., Japan ; Ando, M.

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

Published in:

Microwaves, Antennas and Propagation, IEE Proceedings  (Volume:147 ,  Issue: 6 )

Date of Publication:

Dec 2000

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