Flux-flow-type Josephson oscillator for millimeter and submillimeter wave region. II. Modeling

T. Nagatsuma, K. Enpuku, K. Yoshida, F. Irie

研究成果: ジャーナルへの寄稿学術誌査読

98 被引用数 (Scopus)


A theoretical study is made of a travelling-wave-type oscillator, which utilizes a flux flow in a long Josephson junction for use as a local oscillator in the integrated superconducting receiver system. An internal electromagnetic field of the oscillator junction in the flux-flow state is investigated both numerically and analytically. It is shown that the voltage amplitude of the internal oscillation increases gradually in the direction of the flux flow and reaches a maximum value at the junction end. An equivalent circuit of the oscillator is also obtained, which gives dependences of the emitted radiation on frequency, magnetic field, and load. It is shown that the output power attains the value of the order of 10-6 W in the frequency range between 100 and 500 GHz, and that the output power and the radiation frequency can be controlled by both the bias voltage and the applied magnetic field. These theoretical results explain quantitatively the experimental ones with a Pb-alloy long junction of length 24 λJ.

ジャーナルJournal of Applied Physics
出版ステータス出版済み - 1984

!!!All Science Journal Classification (ASJC) codes

  • 物理学および天文学(全般)


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