Phase-mode circuits for high-performance logic

Takeshi Onomi, Yoshinao Mizugaki, Hideki Satoh, Tsutomu Yamashita, Koji Nakajima

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


We present two types of ICF (INHIBIT Controlled by Fluxon) gates as the basic circuits of the phase-mode logic family, and fabricate an adder circuit. The experimental result demonstrates that the carry operation followed up to 99 GHz input pulses. The performance of Josephson devices is improved by the use of junctions with high current density (Jc). We may use the high-Jc junctions without external resistive shunt in the phase-mode logic circuits because of reduction of the junction hysteresis. One of the ways to overcome the large area occupancy for geometric inductance is to utilize the effective inductance of a Josephson junction itself. We investigate a circuit construction with high-Jc inductor junctions, intrinsically overdumped junctions and junction-type resistors for the compactness of circuit integration, and discuss various aspects of the circuit construction.

Original languageEnglish
Pages (from-to)1608-1616
Number of pages9
JournalIEICE Transactions on Electronics
Issue number10
Publication statusPublished - 1998 Jan 1


  • Integrated circuit
  • Josephson junction
  • Logic circuit
  • Single flux quantum
  • Superconductive electronics

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering


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