Title :
Slot-array antennas fed by coplanar waveguide for millimeter-wave radiation
Author :
Kobayashi, Hiroaki ; Yasuoka, Yoshizumi
Author_Institution :
Dept. of Electron. Eng., Nat. Defense Acad., Yokosuka, Japan
fDate :
6/1/1998 12:00:00 AM
Abstract :
Slot-array antennas with parasitic slots, slot-array antennas fed by coplanar waveguide (CPW), and two-dimensional slot-array antennas fed by CPW were fabricated on fused quartz substrates, and the receiving properties of the antennas were investigated at 94 GHz with the goal of increasing the power gain of the slot antennas. It was found that the power gain of the slot antenna could be increased by 11 dB over a single-slot antenna by using a two-dimensional (8×3) slot-array antenna fed by CPW. It was confirmed that the improvement of the power gain was caused by decreasing surface-wave power in the substrate and by sharpening antenna patterns perpendicular to the substrate
Keywords :
antenna feeds; antenna radiation patterns; coplanar waveguides; millimetre wave antenna arrays; slot antenna arrays; 94 GHz; CPW feed; EHF; MM-wave slot-array antennas; SiO2; coplanar waveguide feed; fused quartz substrates; millimeter-wave radiation; parasitic slots; pattern sharpening; power gain improvement; surface-wave power; two-dimensional slot-array antennas; Coplanar waveguides; Dielectric substrates; Dielectric thin films; Dipole antennas; Microstrip antennas; Millimeter wave communication; Millimeter wave technology; Receiving antennas; Slot antennas; Submillimeter wave communication;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
