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Browsing by Author "Cheng, Yu-Liang"

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    A W-band Quadrature Hybrid Coupled Substrate Integrated Waveguide Diplexer
    (2015-01-01)
    Cheng, Yu-Liang
    ;
    Chen, Hung-Wei
    ;
    Huang, Peng-Da
    ;
    Chang, Chi-Yang
    ;
    電機工程學系
    A W-band quadrature hybrid coupled substrate integrated waveguide (SIW) diplexer is proposed in this paper. Instead of conventional 0.127 mm substrate for W-band circuitry, a 0.254 mm substrate is chosen for Q-value improvement. A WR-10 waveguide to 0.254 mm SIW transition is developed for measurement purpose. The diplexer comprises four Riblet short slot quadrature hybrids and two pairs of 3-pole SIW channel filters. The two passbands of the diplexer are 84 GHz 6% BW and 93 GHz 6% BW respectively. The measured results matched well with simulated ones.