ISSTT Proceedings

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Theoretical and Experimental Studies of Nb-Based Tuning Circuits for THz SIS Mixers

Authors:
V. Yu. Belitsky, S.W. Jacobsson, L.V. Filippenko, E.L. Kollberg
Abstract:
Three Nb-A10x-Nb SIS mixers tuned to operate in the 400-550, 550-700 and 600-750 GHz frequency bands have been investigated by modeling and experimentally by employing Fourier Transform Spectrometer (FTS) technique and mixer measurements. The mixers were of quasioptical type with spiral antennas and twin junction tuning circuits integrated onto the apex area of the antenna arms. Modeling was employed for optimizing the tuning circuits and evaluating its performance. The comprehensive model for the SIS mixer bases on Tucker-Feldman theory of quasiparticle SIS mixer and Mattis-Bardeen theory of anomalous skin-effect. Very good agreement between modeling, FTS measurements and mixer experiment results was achieved. Accuracy in prediction of the tuning band and the coupling efficiency for the tuning circuits is better or about 15% within 400-1000 GHz band.
Categories:
SIS Receivers
Year:
1995
Session:
2
Full-text:
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Page Number(s):
87-102