Hysteretic SIS junction mixer

Details Hysteretic SIS junction mixer Hysteretic SIS junction mixer

1980-09-22

1982-04-13

Bookbinder, Marc E.

Telecommunications

Receiver or analog modulated signal frequency converter

Frequency modifying or conversion

307424, 330 45, 363157, 455325, H04B 126, H03F 700

Patent

active

043251447

ABSTRACT:
The present invention relates to a subharmonically pumped hysteretic superconductor-insulator-superconductor (SIS) junction mixer. The hysteretic junction (10), achieved by not suppressing the critical current I.sub.c of the junction, is responsive to a first source of a pump signal (12) at a frequency .omega..sub.p and a second source of an input signal (14) at a frequency .omega..sub.i, to produce a non-zero output signal at a frequency .omega..sub.o =.vertline..omega..sub.i -2.omega..sub.p .vertline., during either an overpumped or underpumped condition. The hysteretic nature of the junction allows the mixer to operate in a switching mode, thereby producing low-noise mixing with gain.

REFERENCES:
patent: 3281609 (1966-10-01), Rowell
patent: 3573632 (1971-04-01), Kuhn
patent: 3652940 (1972-03-01), Reiter et al.
patent: 3882396 (1975-05-01), Schneider
patent: 3895300 (1975-07-01), Goldstein et al.
patent: 4000469 (1976-12-01), McMaster
patent: 4188584 (1980-02-01), Hoogstraate
Quasiparticle Heterodyne Mixing in SIS Tunnel Junctions--P. L. Richards et al. Mar. 1, 1979, Applied Physics Letters, vol. 34, No. 5 pp. 345-347.
Millimeter Wave Receivers with Subharmonic Pump--T. F. McMaster et al. Dec. 1976--IEEE Trans. on Microwave Theory & Techniques vol. MTT--24, No. 12 pp. 948-952.
Harmonically Pumped Stripline Downconverter--M. V. Schneider et al.--Mar. 1975 IEEE Transactions on Microwave Theory & Techniques, vol. MT--23, No. 3, pp. 271-275.
Conversion Gain & Noise in a Josephson Mixer--Y. Taur et al., Jan. 1974 Revue de Physique Appliquee, vol. 9, No. 1 pp. 263-268.
Four Photon Parametric Amplification--P. T. Parrish et al., Jan. 1974, Revue de Physique Appliquee, vol. 9, No. 1 pp. 229-232.
Four Photon Processes Stimulated by a Fluctuating Pump--L. I. Pavlov Spring/Summer 1979, Applied Physics vol. 18 pp. 105-108.
Analog Applications of the Josephson Effect: Recent Developments and Future Prospects--R. Y. Chiao, Jan. 1979, IEEE Trans. on Magnetics, vol. MAG-15, No. 1 pp. 446-449.
An Integrated 18 GHz Receiver Front End Using a Dielectric Resonator Stabilized Generator and a Subharmonically Pumped Mixer--I. Tatsuguchi et al., 1979 Int'l. Comm. Conf., Conf. Record, Boston, Mass. Jun. 10-14, 1979 pp. 26.2.1-26.2.5.
Development of a 183 GHz Subharmonic Mixer--R. E. Forsythe et al.-Apr. 30-May 2, 1979, 1979 IEEE MTT-S Int'l. Microwave Symposium Digest, pp. 20-21.
Physics of Superconducting Devices--B. S. Deaver, Jr., 1973, The Science and Technology of Superconductivity, W. D. Gregory, Ed., Plenum Press, New York pp. 539-564.

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