Slot-Array Receiving Antennas Fed by Coplanar Waveguide for 700 GHz Submillimeter-Wave Radiation

Hiroaki KOBAYASHI  Yasuhiko ABE  Yoshizumi YASUOKA  

IEICE TRANSACTIONS on Electronics   Vol.E82-C    No.7    pp.1248-1252
Publication Date: 1999/07/25
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Issue on Microwave and Millimeter Wave Technology)
Category: Phased Arrays and Antennas
array antenna,  coplanar waveguide,  slot antenna,  submillimeter wave,  thin-film antenna,  

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Thin-film slot-array receiving antennas fed by coplanar waveguide (CPW) were fabricated on fused quartz substrates, and the antenna properties were investigated at 700 GHz. It was confirmed that the transmission efficiency of CPW was 0.83/λm, and the rate of radiated power from a slot antenna was 0.5 at 700 GHz. The fabricated antennas worked as expected from the theory based on the transmission line model, and the two-dimensional 83 slot-array antenna fed by CPW increased the power gain by 11 dB over a single-slot antenna. The power gain of the antenna was 13 dBi and the aperture efficiency was 40% when the 700 GHz-submillimeter wave was irradiated through the substrate.