LITHOGRAPHIC DIPOLE ANTENNA PROPERTIES AT 10 MU-M WAVELENGTH - COMPARISON OF METHOD-OF-MOMENTS PREDICTIONS WITH EXPERIMENT

Dipole antennas designed for operation at 10 mu m wavelength have been fabricated by optical lithography and their properties measured by de tection of CO2 laser radiation in integrated thin-film bolometers. We find a remarkably strong increase in cross-polarized signal as the ant enna linewidth is increased. The measured beam pattern is a saddle poi nt at broadside (local minimum in the H-plane, local maximum in the E- plane) as predicted by standard method-of-moments theory.