Abstract
A unified theory of the singly and doubly degenerate Josephson-junction parametric amplifier is presented. Experiments with single junctions on both amplifier modes at frequencies 10, 35, and 70 GHz are discussed. Low-noise temperature (∼100 K, single sideband (SSB)) and reasonable gain (∼8 dB) were obtained at 35 GHz in the singly degenerate mode. On the basis of the theory and experiments, a general procedure for optimizing junction parameters is discussed and illustrated by the specific design of a 100-GHz amplifier.
Original language | English |
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Journal | I E E E Transactions on Electron Devices |
Volume | 27 |
Issue number | 10 |
Pages (from-to) | 1928-1934 |
ISSN | 0018-9383 |
DOIs | |
Publication status | Published - 1980 |