Koichi NAGATA


Fabrication of Small AlGaAs/GaAs HBT's for lntegrated Circuits Using New Bridged Base Electrode Technology
Takumi NITTONO Koichi NAGATA Yoshiki YAMAUCHI Takashi MAKIMURA Hiroshi ITO Osaake NAKAJIMA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1994/09/25
Vol. E77-C  No. 9  pp. 1455-1463
Type of Manuscript:  PAPER
Category: Semiconductor Materials and Devices
Keyword: 
heterojunction bipolar transistorself-aligned structureoxygen-ion implantationzinc diffusioncarbon doping
 Summary | Full Text:PDF(909.6KB)

A 34.8 GHz 1/4 Static Frequency Divider Using AlGaAs/GaAs HBTs
Yoshiki YAMAUCHI Osaake NAKAJIMA Koichi NAGATA Hiroshi ITO Tadao ISHIBASHI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1992/10/25
Vol. E75-C  No. 10  pp. 1105-1109
Type of Manuscript:  Special Section PAPER (Special Issue on Compound Semiconductor Integrated Circuits)
Category: 
Keyword: 
HBTGaAsICAlGaAs/GaAsfrequency divider
 Summary | Full Text:PDF(589.7KB)

Josephson Junctions with Tellurium Barriers
Koichi NAGATA Shingo UEHARA Takahiro INAMURA 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1979/12/25
Vol. E62-E  No. 12  pp. 863-868
Type of Manuscript:  PAPER
Category: Other Devices
Keyword: 
 Summary | Full Text:PDF(476.8KB)