Abstract
We have investigated the effect of a dc-power (DCP) layer on the performance of single fluxquantum (SFQ) circuits by changing the film thickness of a ground plane (GP). TheDCP layer was placed below the GP and was used as bias current feeds. Twomeasurements were conducted. One was direct detection of the magnetic fluxabove the GP by using SQUIDs. The results indicated that the GPs with filmthicknesses of more than 400 nm were effective to completely suppress the fluxunder the condition that the return current was extracted from the ground plane.The other was evaluation of the operating margins of the 408 bit shift registercircuits (SRs) with 8032 Josephson junctions and a total designed bias current of1.05 A. The results showed that a 500 nm thick GP had an advantage over a 300 nmthick GP in the dependence of the upper margin on the bias current port of theSR.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
