Single flux quantum technology(SFQ) is a very promising
beyond-CMOS technology with lower power consumption and with proven
frequencies up to 370 GHz for small circuits. Conventional SFQ circuits
are biased with resistors which result in large static power dissipation
along with joule heating. Energy-efficient rapid single flux quantum
(ERSFQ) circuits solve this problem. In this talk, a simulation analysis
of energy-efficient rapid single flux quantum (ERSFQ) biasing is
presented. To overcome the problems of scaling and circuit margins of an
SFQ circuit, a new superconducting magnetic FPGA fabric is designed by the
use of magnetic Josephson junctions (MJJ) to implement a switch. Designs
of all FPGA sub-circuits are developed and are verified through circuit
Verilog HDL models are also developed for all FPGA circuit blocks to facilitate large-scale FPGA simulations for the implementation of the desired circuit on the proposed FPGA fabric. An innovative clock-choking mechanism using MJJs is also proposed in the case of no logic circuit activity for a current-recycling circuit block, which would help in eliminating the dynamic power consumed due to the switching of bias junctions of the logic circuit.
Naveen Kumar Katam received both B.Tech. and M.Tech. degrees from Indian Institute of Technology Kanpur, India, in 2012. After graduating from IIT Kanpur, he joined Taiwan Semiconductor Manufacturing Company in Hsinchu, Taiwan, as a Product Engineer and worked closely with circuit designers and fabrication in CMOS image sensor program. Since 2014, he has been working with Prof. Massoud Pedram at the Department of Electrical Engineering, University of Southern California, Los Angeles, CA, USA, with a research focus on CAD tools, circuit design and analysis, and applied superconductivity and receives Ph.D. in 2019. He is also associated with HYPRES, Elmsford, NY, USA, for some of his research work during Ph.D. He is the recipient of 2018 IEEE CSC graduate study fellowship. His research interests include superconducting electronics, organic electronics, and renewable energy applications.