Koji YAMANAKA


120-W Ku-Band GaN SSPA with Diode Linearizer for Future Broadcasting Satellites
Masafumi NAGASAKA Masaaki KOJIMA Takuma TORII Hiromitsu UTSUMI Koji YAMANAKA Shintaro SHINJO Mitsuhiro SHIMOZAWA Hisashi SUJIKAI 
Publication:   
Publication Date: 2019/10/01
Vol. E102-C  No. 10  pp. 717-724
Type of Manuscript:  Special Section PAPER (Special Section on Microwave and Millimeter-Wave Technologies)
Category: 
Keyword: 
broadcasting satelliteSSPAKu-bandGaN
 Summary | Full Text:PDF(3.3MB)

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)

On the Large Signal Evaluation and Modeling of GaN FET
Iltcho ANGELOV Mattias THORSELL Kristoffer ANDERSSON Akira INOUE Koji YAMANAKA Hifumi NOTO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2010/08/01
Vol. E93-C  No. 8  pp. 1225-1233
Type of Manuscript:  Special Section PAPER (Special Section on Heterostructure Microelectronics with TWHM 2009)
Category: GaN-based Devices
Keyword: 
GaNFETsmall signal and large signal models
 Summary | Full Text:PDF(1.2MB)

A Large-Signal Simulation Program for Multi-Stage Power Amplifier Modules by Using a Novel Interpolation
Kazuhisa YAMAUCHI Morishige HIEDA Kazutomi MORI Koji YAMANAKA Yoshitada IYAMA Tadashi TAKAGI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2001/07/01
Vol. E84-C  No. 7  pp. 891-897
Type of Manuscript:  Special Section PAPER (Special Issue on Techniques for Constructing Microwave Simulators--Design and Analysis Tools for Electromagnetic Fields, Circuits, and Antennas--)
Category: Modeling of Nonlinear Microwave Circuits
Keyword: 
microwaveamplifier modulelarge-signal characteristicsmulti-stageinterpolation
 Summary | Full Text:PDF(1013.3KB)