Masafumi SHIGAKI


AFI Suppressing Effect of an HTS RF Receive Filter with High Selectivity for Base Stations of Digital Wireless Communications
Kazunori YAMANAKA Masafumi SHIGAKI Kazuaki KURIHARA Akihiko AKASEGAWA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2008/03/01
Vol. E91-C  No. 3  pp. 364-365
Type of Manuscript:  Special Section LETTER (Special Section on Recent Progress in Superconductive Digital Electronics)
Category: 
Keyword: 
HTSRF filterbit error ratedigital wireless communication
 Summary | Full Text:PDF(320KB)

A Subsystem of Electromagnetic Wave Radiation and Propagation Estimation Using HTS Receiving Filters for S Band
Kazunori YAMANAKA Masafumi SHIGAKI Shin-ichi YAMAMOTO Shin-ichi KOZONO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2007/03/01
Vol. E90-C  No. 3  pp. 595-598
Type of Manuscript:  Special Section PAPER (Special Section on Innovative Superconducting Devices and Their Applications)
Category: 
Keyword: 
microwave filtersuperconductorradiationpropagationreceiver
 Summary | Full Text:PDF(752KB)

High-Power Millimeter Wave MMIC Amplifier Design Using Improved Load-Pull Method
Kazuo NAGATOMO Shoichi KOIKE Naofumi OKUBO Masafumi SHIGAKI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1992/06/25
Vol. E75-C  No. 6  pp. 663-668
Type of Manuscript:  Special Section PAPER (Special Issue on MMIC Technology)
Category: 
Keyword: 
MMIClarge-signalhigh-power amplifier load-pullmillimeter-wave
 Summary | Full Text:PDF(600.2KB)

5 GHz GaAs Monolithic Astable Multivibrator Type Voltage Controlled Oscillator
Masafumi SHIGAKI Yoshimasa DAIDO Yukio TAKEDA Kenichi IMAMURA Hidetake SUZUKI 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1984/03/25
Vol. E67-E  No. 3  pp. 161-165
Type of Manuscript:  PAPER
Category: Integrated Circuits
Keyword: 
 Summary | Full Text:PDF(426.2KB)