Title :
Influence of the bias supply lines on the performance of RSFQ circuits
Author :
Tolkacheva, Elena ; Engseth, Henrik ; Kataeva, Irina ; Kidiyarova-Shevchenko, Anna
Author_Institution :
Microtechnol. & Nanosci. Dept., Chalmers Univ. of Technol., Gothenburg, Sweden
fDate :
6/1/2005 12:00:00 AM
Abstract :
Two effects of the bias supply line on the performance of RSFQ circuits have been studied: inductive coupling between the bias supply line and circuit inductances; effect of the mirrored current in the ground plane. The following results of the study are presented: 3D calculations and experimental measurements of inductive coupling between parallel and perpendicular microstrips in presence of one and two ground planes; calculated margins dependence on the external magnetic field in RSFQ cell. Bias current density extraction method has been developed and implemented in RSFQ circuit design flow.
Keywords :
current density; electromagnetic coupling; quantum gates; superconducting logic circuits; 3D calculations; RSFQ circuits; bias current density extraction method; bias supply line; circuit inductances; current distribution; external magnetic field; ground planes; inductive coupling; magnetic coupling; parallel microstrips; perpendicular microstrips; Coupling circuits; Inductance; Large scale integration; Magnetic circuits; Magnetic flux; Microstrip; SQUIDs; Strips; Superconducting magnets; Wiring; Bias supply line; RSFQ; current distribution; magnetic coupling;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2005.849788
