Hg. Meyer et al., MICROWAVE CIRCUIT FOR THE GENERATION OF JOSEPHSON VOLTAGES AT LOW-FREQUENCIES, Superconductor science and technology, 7(5), 1994, pp. 327-329
Using a double-resonator microwave circuit with 216 Josephson junction
s driven at a frequency of 11.1 GHz we have obtained overlapping Shapi
ro steps up to 0.16 V with step widths of about 25 muA. Chaotic instab
ilities can be tuned out by the microwave power.