Title :
Inductive coupling of a flux-flow type Josephson oscillator to a stripline
Author :
Yoshida, K. ; Qin, J. ; Enpuku, K.
Author_Institution :
Dept. of Electron., Kyushu Univ., Fukuoka, Japan
fDate :
3/1/1989 12:00:00 AM
Abstract :
A theoretical and experimental study of the coupling of the flux-flow-type Josephson oscillator (FFO) to an external stripline has been carried out to overcome the large impedance mismatch between them. For efficient coupling and impedance matching at millimeter and submillimeter wavelengths, the authors have proposed a scheme where the Josephson oscillator is inductively coupled to the stripline by a thin superconducting electrode. Theoretical modeling of the coupling section and the design of the stripline impedance-transformer have been carried out. In a preliminary experiment, the authors obtained a power of about 10-7 W emitted from the FFO into the stripline in the frequency range from 184 GHz to 193 GHz
Keywords :
Josephson effect; equivalent circuits; impedance matching; microwave oscillators; solid-state microwave circuits; strip line components; submillimetre wave devices; superconducting junction devices; 10-7 W; 184 to 193 GHz; EHF; Josephson oscillator; MM-wave type; external stripline; flux-flow type; impedance matching; inductive coupling; junction device; millimetre wavelengths; modeling; stripline impedance-transformer; submillimeter wavelengths; thin superconducting electrode; Coupling circuits; Electrodes; Frequency; Impedance matching; Inductance; Josephson junctions; Oscillators; Stripline; Superconducting devices; Superconducting thin films;
Journal_Title :
Magnetics, IEEE Transactions on
