Title :
Refractory submillimeter Josephson effect sources
Author :
Wan, K. ; Bi, B. ; Jain, A.K. ; Fetter, L.A. ; Han, S. ; Mallison, W.H. ; Lukens, J.E.
Author_Institution :
Dept. of Phys., State Univ. of New York, Stony Brook, NY, USA
fDate :
3/1/1991 12:00:00 AM
Abstract :
Niobium Josephson effect array oscillators have been fabricated and tested. These devices deliver about 1 μW of power in the submillimeter-wave range to 20-60 Ω load resistors. The present upper frequency limit of about 500 GHz appears to be set by losses in the superconducting microstrip. Data on the submillimeter-wave surface impedance of the niobium microstrip and details of the trilayer junction processing, which gives value of Vm at 2 K up to 800 mV, are presented
Keywords :
Josephson effect; microwave oscillators; niobium; solid-state microwave circuits; superconducting junction devices; 20 to 60 ohm; Josephson effect array oscillators; Nb microstrip; losses; submillimeter-wave range; submillimeter-wave surface impedance; superconducting microstrip; trilayer junction processing; upper frequency limit; Frequency; Josephson effect; Josephson junctions; Microstrip; Niobium; Oscillators; Phased arrays; Resistors; Submillimeter wave devices; Surface impedance;
Journal_Title :
Magnetics, IEEE Transactions on
