An edge type thin-film warm carrier device which had a contact area le
ss than 8x10(-10)cm2 was fabricated by the electron beam lithographic
method associated with the precisely controlled dry etching, and the d
etection properties of the device were investigated at 9.6 and 94GHz.
It was confirmed that the fabricated device operates as an antenna cou
pled detector in the microwave and millimeter wave regions, which rect
ifies the signal induced on the thin-film antenna with its nonlinear I
-V characteristic which persists up to at least 94GHz.