Shoichi NARAHASHI


26 GHz Band Extremely Low-Profile Front-End Configuration Employing Integrated Modules of Patch Antennas and SIW Filters
Yasunori SUZUKI Takana KAHO Kei SATOH Hiroshi OKAZAKI Maki ARAI Yo YAMAGUCHI Shoichi NARAHASHI Hiroyuki SHIBA 
Publication:   
Publication Date: 2017/12/01
Vol. E100-C  No. 12  pp. 1097-1107
Type of Manuscript:  PAPER
Category: Microwaves, Millimeter-Waves
Keyword: 
array antennaSIW filter3D-MMIClower profileradio access unit
 Summary | Full Text:PDF(1.8MB)

Recent Activities of Japanese Microwave Industry
Koji YAMANAKA Yasunori SUZUKI Shoichi NARAHASHI Takaya WADA Makoto KAWASHIMA Ken TAKEI Kazutaka TAKAGI Atsushi HONDA Zhengyi LI Liang ZHOU Yoji OHASHI Wataru HATTORI Yusuke TAKAHASHI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2015/07/01
Vol. E98-C  No. 7  pp. 621-629
Type of Manuscript:  INVITED PAPER (Special Section on Microwave and Millimeter-Wave Technology)
Category: 
Keyword: 
microwave
 Summary | Full Text:PDF(2.2MB)

Parallel Ring-Line Rat-Race Circuit with Very Loose Coupling Utilizing Composite Right-/Left-Handed Transmission Lines
Tadashi KAWAI Yuma SUMITOMO Akira ENOKIHARA Isao OHTA Kei SATOH Yasunori SUZUKI Hiroshi OKAZAKI Shoichi NARAHASHI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2014/10/01
Vol. E97-C  No. 10  pp. 965-971
Type of Manuscript:  Special Section PAPER (Special Section on Recent Progress in Microwave and Millimeter-wave Technologies)
Category: 
Keyword: 
microwave passive componentsrat-race circuitloose couplingCRLH-TLwideband
 Summary | Full Text:PDF(2.1MB)

Experimental Investigation on RF Characteristics of Cryogenically-Cooled 3W-Class Receiver Amplifier Employing GaN HEMT with Blue Light LED for Mobile Base Stations
Yasunori SUZUKI Shoichi NARAHASHI Toshio NOJIMA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2014/10/01
Vol. E97-C  No. 10  pp. 930-937
Type of Manuscript:  Special Section PAPER (Special Section on Recent Progress in Microwave and Millimeter-wave Technologies)
Category: 
Keyword: 
cryogenically-cooled amplifierGaN HEMTblue lightDCRFlight-emitting diodemobile base stationreceiver amplifier
 Summary | Full Text:PDF(1.7MB)

FOREWORD
Shoichi NARAHASHI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2014/10/01
Vol. E97-C  No. 10  pp. 922-922
Type of Manuscript:  FOREWORD
Category: 
Keyword: 
 Summary | Full Text:PDF(178.3KB)

Tunable Resonator Employing Comb-shaped Transmission Line and Semiconductor Switches
Kunihiro KAWAI Daisuke KOIZUMI Hiroshi OKAZAKI Shoichi NARAHASHI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2014/08/01
Vol. E97-C  No. 8  pp. 795-802
Type of Manuscript:  PAPER
Category: Microwaves, Millimeter-Waves
Keyword: 
Tunable resonatorsmicrostrip linesswitches
 Summary | Full Text:PDF(1.8MB)

Broadside Coupling High-Temperature Superconducting Dual-Band Bandpass Filter
Yuta TAKAGI Kei SATOH Daisuke KOIZUMI Shoichi NARAHASHI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2013/08/01
Vol. E96-C  No. 8  pp. 1033-1040
Type of Manuscript:  PAPER
Category: Microwaves, Millimeter-Waves
Keyword: 
bandpass filtersdual-bandresonator filtersbroadside couplinghigh-temperature superconductingYBCO
 Summary | Full Text:PDF(2.7MB)

Compact Tunable Isolator with a Variable Capacitor
Takayuki FURUTA Atsushi FUKUDA Hiroshi OKAZAKI Shoichi NARAHASHI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2013/01/01
Vol. E96-C  No. 1  pp. 84-92
Type of Manuscript:  PAPER
Category: Microwaves, Millimeter-Waves
Keyword: 
multi-bandtunableisolatorvaractor diode
 Summary | Full Text:PDF(2.7MB)

Low-Loss Matching Network Design for Band-Switchable Multi-Band Power Amplifier
Atsushi FUKUDA Takayuki FURUTA Hiroshi OKAZAKI Shoichi NARAHASHI Toshio NOJIMA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2012/07/01
Vol. E95-C  No. 7  pp. 1172-1181
Type of Manuscript:  Special Section PAPER (Special Section on Recent Trends of Microwave Systems and Their Fundamental Technologies)
Category: 
Keyword: 
power amplifierreconfigurablematching networkmulti-bandswitch
 Summary | Full Text:PDF(3.2MB)

Highly Efficient Multi-Band Power Amplifier Employing Reconfigurable Matching and Biasing Networks
Atsushi FUKUDA Hiroshi OKAZAKI Shoichi NARAHASHI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2010/07/01
Vol. E93-C  No. 7  pp. 949-957
Type of Manuscript:  Special Section PAPER (Special Section on Recent Progress in Microwave and Millimeter-Wave Technologies)
Category: 
Keyword: 
power amplifierreconfigurablematching networkbiasing networkmulti-bandswitchmicroelectro mechanical systems
 Summary | Full Text:PDF(2.1MB)

A Novel Compact HTS Interdigital Bandpass Filter Using CPW Quarter-Wavelength Resonators
Zhewang MA Tamio KAWAGUCHI Yoshio KOBAYASHI Daisuke KOIZUMI Kei SATOH Shoichi NARAHASHI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2006/02/01
Vol. E89-C  No. 2  pp. 140-144
Type of Manuscript:  Special Section PAPER (Special Section on Superconducting High-frequency Devices)
Category: 
Keyword: 
high temperature superconductorcoplanar waveguidebandpass filter
 Summary | Full Text:PDF(408.1KB)

A Low-Loss 5 GHz Bandpass Filter Using HTS Quarter-Wavelength Coplanar Waveguide Resonators
Hideyuki SUZUKI Zhewang MA Yoshio KOBAYASHI Kei SATOH Shoichi NARAHASHI Toshio NOJIMA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2002/03/01
Vol. E85-C  No. 3  pp. 714-719
Type of Manuscript:  Special Section PAPER (Special Issue on Superconductive Electronics)
Category: Microwave Devices and Systems
Keyword: 
superconductorcoplanar waveguidequarter-wavelength resonatorband-pass filtermicrowave
 Summary | Full Text:PDF(739.2KB)

2-GHz Band Cryogenic Receiver Front End for Mobile Communication Base Station Systems
Toshio NOJIMA Shoichi NARAHASHI Tetsuya MIMURA Kei SATOH Yasunori SUZUKI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2000/08/25
Vol. E83-B  No. 8  pp. 1834-1843
Type of Manuscript:  Special Section PAPER (Special Issue on Personal, Indoor and Mobile Radio Communications)
Category: 
Keyword: 
radio base station equipmentcryogenic receiver front endsuperconducting filterlow noise amplifiermobile communication
 Summary | Full Text:PDF(687.3KB)