High frequency system including a superconductive device and tem

Details High frequency system including a superconductive device and tem High frequency system including a superconductive device and tem

1996-05-13

1998-05-26

Callahan, Timothy P.

Oscillators

Solid state active element oscillator

Significant distributed parameter resonator

331 69, 327527, 327528, 257 31, 257 32, 257 33, 257 34, 257 35, 257 36, H04B 318

Patent

active

057572437

ABSTRACT:
An effective high frequency oscillator is made of a plurality of Josephson devices. A high frequency converter as a high frequency circuit is made of the high frequency oscillator, nonlinear superconductor devices, and transmission line. Josephson devices are connected in parallel to make a superconductor module. Then superconductive modules are connected in series for high frequency via a phase locking circuit such as a thin film type capacitor to make the high frequency oscillator. Consequently, the high frequency oscillator is used as a local oscillator for a frequency converter. The high frequency system comprises a high frequency package housing a high frequency circuit, a cooling unit including a low temperature stage in thermal contact with the high frequency package, and a shielding case for housing the high frequency circuit and the low temperature stage. The high frequency system of the present invention provides a small-sized and power-saving high frequency circuit having operational stability.

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patent: 5114912 (1992-05-01), Benz
patent: 5339457 (1994-08-01), Kawasaki et al.
Satchell, et al."Arrays of High Temperature Superconductor Josephson Junctions", IEEE Transactions on Applied Superconductivity, vol. 3, No. 1, Mar. 1993, pp. 2273-2276.

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