Sp. Benz et Paa. Booi, HIGH-FREQUENCY OSCILLATORS USING PHASE-LOCKED ARRAYS OF JOSEPHSON-JUNCTIONS, IEEE transactions on ultrasonics, ferroelectrics, and frequency control, 42(5), 1995, pp. 964-966
We present a basic description of Josephson junctions and discuss thei
r use as GHz and THz oscillators. The resistively shunted junction mod
el is used to calculate the available power, linewidth, and operating
frequency of the oscillators. We discuss how phase-locked arrays of ju
nctions are used to achieve higher power and narrower linewidth. Two e
xperimental examples of phase-locked emission are shown: one from on-c
hip detection circuits at 150 GHz and one detected off-chip showing a
13-kHz linewidth at 88.8 GHz.