A Millimeter-Wave Communication Experiment Incorporating with a Superconducting SIS Receiver

Abstract

The first demonstration has been made of a millimeter-wave communication system based on a 100-GHz superconducting SIS (superconductor-insulator-superconductor) receiver. The SIS receiver has an intermediate frequency (IF) band of 1.1-1.7 GHz and an equivalent input noise temperature of about 300 K, while the transmitter is a 93-GHz varactor-tunable Gunn oscillator with its output frequency modulated via an 11-MHz signal source. In addition, results of two analog FM demodulation techniques were compared in this experiment.