Masashi NAKATSUGAWA


Path Loss Model for Outdoor-to-Indoor Corridor Up to 40GHz Band in Microcell Environments
Minoru INOMATA Motoharu SASAKI Wataru YAMADA Takeshi ONIZAWA Masashi NAKATSUGAWA Nobutaka OMAKI Koshiro KITAO Tetsuro IMAI Yukihiko OKUMURA 
Publication:   
Publication Date: 2017/02/01
Vol. E100-B  No. 2  pp. 242-251
Type of Manuscript:  Special Section PAPER (Special Section on Antenna and Propagation Technologies Contributing to Realization of Next Generation Wireless Systems)
Category: 
Keyword: 
propagation5Goutdoor-to-indoor path loss modelmillimeter wavehigh frequency bandsmicrocell environments
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Development of Wireless Systems for Disaster Recovery Operations
Takashi HIROSE Fusao NUNO Masashi NAKATSUGAWA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2015/07/01
Vol. E98-C  No. 7  pp. 630-635
Type of Manuscript:  INVITED PAPER (Special Section on Microwave and Millimeter-Wave Technology)
Category: 
Keyword: 
disaster recovery operationbusiness radiosubscriber wireless systemsatellite communicationsthe Great East Japan Earthquake
 Summary | Full Text:PDF(2.8MB)

FOREWORD
Masashi NAKATSUGAWA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2013/10/01
Vol. E96-C  No. 10  pp. 1209-1209
Type of Manuscript:  FOREWORD
Category: 
Keyword: 
 Summary | Full Text:PDF(228.1KB)

Frame Resource Allocation Schemes that Improve System Capacity and Latency Performance of Time-Division Duplex Multihop Relay Systems
Youhei OHNO Tatsuya SHIMIZU Takefumi HIRAGURI Masashi NAKATSUGAWA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2010/08/01
Vol. E93-B  No. 8  pp. 2035-2042
Type of Manuscript:  Special Section PAPER (Special Section on Implementation, Experiments, and Practice for Ad Hoc and Mesh Networks)
Category: 
Keyword: 
multihop relayframe resource allocationsystem capacitylatency
 Summary | Full Text:PDF(1.6MB)

A Highly Linearized MMIC Amplifier Using a Combination of a Newly Developed LD-FET and D-FET Simultaneously Fabricated with a Self-Alignment/Selective Ion-Implantation Process
Masashi NAKATSUGAWA Masahiro MURAGUCHI Yo YAMAGUCHI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2002/12/01
Vol. E85-C  No. 12  pp. 1981-1989
Type of Manuscript:  Special Section PAPER (Special Issue on Low-Distortion,High-Power,High-Efficiency Active Device and Circuit Technology)
Category: 
Keyword: 
linearized amplifierMMICMESFETself-alignment/selective ion-implantation processlow-distortion
 Summary | Full Text:PDF(1.2MB)

An Effective Data Transmission Control Method for Mobile Terminals in Spot Communication Systems
Hiroshi YOSHIOKA Masashi NAKATSUGAWA Shuji KUBOTA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2000/07/25
Vol. E83-A  No. 7  pp. 1328-1337
Type of Manuscript:  Special Section PAPER (Special Section on Multi-dimensional Mobile Information Networks)
Category: 
Keyword: 
spot communication systemsdata transmission methodintelligent transport systems (ITS)DSRC protocol
 Summary | Full Text:PDF(1.4MB)

Software Radio Base and Personal Station Prototypes
Yasuo SUZUKI Kazuhiro UEHARA Masashi NAKATSUGAWA Yushi SHIRATO Shuji KUBOTA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2000/06/25
Vol. E83-B  No. 6  pp. 1261-1268
Type of Manuscript:  Special Section PAPER (Special Issue on Software Defined Radio and Its Technologies)
Category: 
Keyword: 
softwaresoftware radiodigital signal processorpersonal handy phone system
 Summary | Full Text:PDF(793.2KB)

A High-Efficiency Linear Power Amplifier with a Novel Output Power Control Technique
Yo YAMAGUCHI Masahiro MURAGUCHI Tadao NAKAGAWA Masashi NAKATSUGAWA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1998/06/25
Vol. E81-C  No. 6  pp. 892-897
Type of Manuscript:  Special Section PAPER (Special Issue on Microwave and Millimeter-Wave Module Technology)
Category: Semiconductor Devices and Amplifiers
Keyword: 
high efficiencylinearoutput power controlpower amplifiermobile communication
 Summary | Full Text:PDF(457.1KB)

Design of a K-Band Power Amplifier Using On-Wafer-Tuning Load-Pull Method
Minoru IDA Masashi NAKATSUGAWA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1998/06/25
Vol. E81-C  No. 6  pp. 882-885
Type of Manuscript:  Special Section PAPER (Special Issue on Microwave and Millimeter-Wave Module Technology)
Category: Semiconductor Devices and Amplifiers
Keyword: 
power amplifierload-pull measurementon-waferMMICHEMT
 Summary | Full Text:PDF(550.1KB)

A Novel Optical Control Technique Using Tunable Inductance Circuits
Hitoshi HAYASHI Masashi NAKATSUGAWA Tadao NAKAGAWA Masahiro MURAGUCHI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1998/02/25
Vol. E81-C  No. 2  pp. 299-304
Type of Manuscript:  PAPER
Category: Microwave and Millimeter Wave Technology
Keyword: 
opticalcontroltunableinductancecircuit
 Summary | Full Text:PDF(630.3KB)

Performance of GaAs MESFET Photodetectors with Wide Drain-to-Gate Distances in Subcarrier Optical Transmission
Tatsuya SHIMIZU Masashi NAKATSUGAWA Hiroyuki OHTSUKA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1997/01/25
Vol. E80-C  No. 1  pp. 160-167
Type of Manuscript:  PAPER
Category: Opto-Electronics
Keyword: 
optically controlled MESFETdrain-to-gate distanceMMICsubcarrier optical transmissionoptical coupling efficiency
 Summary | Full Text:PDF(634.9KB)

Quasi-Transmission-Line Variable Reactance Circuits for a Wide Variable-Phase Range X-Band Monolithic Phase Shifter
Masashi NAKATSUGAWA Masahiro MURAGUCHI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1997/01/25
Vol. E80-C  No. 1  pp. 168-173
Type of Manuscript:  PAPER
Category: Microwave and Millimeter Wave Technology
Keyword: 
phase shiftertransmission linequadrature hybridshunt capacitorreflection
 Summary | Full Text:PDF(461.7KB)