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The use of Josephson-type superconducting tunnel junctions (two superconductors separated by a very thin insulating layer) as generators of radiation in the range 5 GHz to 1000 GHz is discussed. To this end, the results of recent experiments on the observation of X-band radiation from such junctions are presented, along with a complete discussion of the theory of such junctions. Their potential use as detectors, voltage sources, and harmonic multipliers is also discussed.
Langenberg et al. (Sat,) studied this question.