Nonreciprocal Properties of Vacuum-Deposited InSb Films at 87 GHz (Short Papers)

Room-temperature measurernetits were taken at 87 GHz on isolators fabricated by using thin vacuum-deposited hot-wire-recrystallized InSb films in both the Faraday-rotation mode and the field-displacement mode. In the Faraday-rotation mode, an insertion loss of 9 dB, a nonreciprocity of 10 dB, and an isolation of 19 dB were obtained in an external magnetic field of 8 kOe.