Kazumasa TAKAGI


Circuit Simulation Study for Characterization of High-Temperature Superconducting Sigma-Delta Modulator with 100 GHz Sampling
Kazuo SAITOH Futoshi FURUTA Yoshihisa SOUTOME Tokuumi FUKAZAWA Kazumasa TAKAGI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2003/01/01
Vol. E86-C  No. 1  pp. 24-29
Type of Manuscript:  INVITED PAPER (Special Issue on Superconductor Digital/Analog Circuit Technologies)
Category: HTS Digital Applications
Keyword: 
single flux quantuminterface-engineered Josephson junctionsuperconducting sigma-delta modulator
 Summary | Full Text:PDF(287.7KB)

Design of Demultiplexer and Demonstration of the Operation up to 46 GHz
Futoshi FURUTA Kazuo SAITOH Kazumasa TAKAGI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2002/03/01
Vol. E85-C  No. 3  pp. 631-635
Type of Manuscript:  Special Section PAPER (Special Issue on Superconductive Electronics)
Category: Digital Devices and Their Applications
Keyword: 
demultiplexer (DMUX)SFQbinary treeMonte Carlo
 Summary | Full Text:PDF(1MB)

HTS Surface-Modified Junctions with Integrated Ground-Planes for SFQ Circuits
Yoshihisa SOUTOME Tokuumi FUKAZAWA Kazuo SAITOH Akira TSUKAMOTO Kazumasa TAKAGI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2002/03/01
Vol. E85-C  No. 3  pp. 759-763
Type of Manuscript:  INVITED PAPER (Special Issue on Superconductive Electronics)
Category: Junctions and Processing
Keyword: 
high-temperature-superconductorJosephson junctionSFQ circuitramp-edge junctiongroundplane
 Summary | Full Text:PDF(916.3KB)

Measurement of Shift in Voltage-Flux Characteristics of SQUID Having Washer Coil Due to Flux-Trapping
Eriko TAKEDA Toshikazu NISHINO Kazumasa TAKAGI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1995/05/25
Vol. E78-C  No. 5  pp. 526-530
Type of Manuscript:  Special Section PAPER (Special Issue on Superconducting Electronics and Its Applications)
Category: SQUID sensor and multi-channel SQUID system
Keyword: 
SQUIDflux-trappingmechanismdevice-structure
 Summary | Full Text:PDF(529.6KB)