Receiving properties of slot array antennas with parasitic slots on dielectric substrates

Abstract

With a view to improving the gain of the slot antenna on a dielectric substrate operating in the millimeter and submillimeter wave regions, slot array antennas with parasitic elements for 94 and 700 GHz have been designed and fabricated. The power gains and the receiving patterns of the antennas have been experimentally derived and compared with theoretical results. It is found that the experimental values of the fabricated six‐slot antennas agree well with the theoretical ones, and the gain is improved by about 6 dB over that for the single slot. © 1998 Scripta Technica, Electron Comm Jpn Pt 1, 81(10): 9–18, 1998

Receiving properties of folded‐slot array antennas for 94‐GHz millimeter wave radiation

“…The folded-slot antenna works as a half-wavelength antenna, and is 0.5 O m long and 0.04 O m wide. The distance between the slots is 0.6 O m in order to reduce the loss of power to the surface wave [10], where O m is the mean wavelength between the air and the substrate, and O d is the dielectric wavelength [11]. The array antenna is formed on the surface of a substrate whose dielectric constant is H r , and whose thickness is odd times O d / 4 [11].…”