Operation of the SUPARAMP at 33GHz

Author:: Chiao, R. Y.
Published:: JAN 1, 1975.
Physical Description:: 1 electronic document
Additional Creators:: Parrish, P. T.

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Summary:

A 9mm degenerate parametric amplifier was constructed using a linear, series array of unbiased Josephson junctions as the active, nonlinear element. A balanced diode mixer was used as a synchronous detector, with a single source serving both as the pump and as the mixer local oscillator. A stable, net gain of 15 dB in an instantaneous bandwith (FWHM) of 3.4 GHz was achieved. A system noise temperature of 220 K + or - 5 K (DSB) was measured with a SUPARAMP contribution of only 20 K x or - 10 K. Output saturation was observed and complicates the interpretation of the noise temperature measurements and may render them upper limits. A comparison was made with the results of an earlier 3 cm suparamp. The data is in substantial agreement with theoretical predictions.

Other Subject(s):

ELECTRONICS AND ELECTRICAL ENGINEERING

Collection:

NASA Technical Reports Server (NTRS) Collection.

Note:

Document ID: 19760007292.
Accession ID: 76N14380.
NASA-CR-145983.

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