Title :
Operation of a 64-bit superconducting shift register at 8 GHz
Author_Institution :
Hypres Inc., Elmsford, NY, USA
fDate :
3/1/1993 12:00:00 AM
Abstract :
A 64 b superconducting shift register based on edge-triggered gates has been tested up to 8.45 GHz with two-phase sine wave clocks. The edge-triggered gates are made by serial connection of a Josephson junction and a modified variable threshold gate, fabricated by an Nb-AlO/sub x/-Nb process. Wide operating margins and simple two-phase clocks make this shift register relatively easy to test. Power dissipation is 10 mu W/b.<>
Keywords :
Josephson effect; niobium; shift registers; superconducting junction devices; superconducting logic circuits; 8 to 8.4 GHz; Josephson junction; MVTL gate; Nb-AlO/sub x/-Nb process; edge-triggered gates; modified variable threshold gate; superconducting shift register; two-phase sine wave clocks; Circuit testing; Clocks; Heating; Josephson junctions; Microstrip; Niobium; Phased arrays; Resistors; Shift registers; Signal design;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
