Koji TAKINAMI


Evolution of Millimeter-Wave Multi-Antenna Systems in the IoT Era
Kazuaki TAKAHASHI Hidekuni YOMO Takashi MATSUOKA Junji SATO Yoichi NAKAGAWA Makoto YASUGI Masataka IRIE Naganori SHIRAKATA Koji TAKINAMI 
Publication:   
Publication Date: 2017/10/01
Vol. E100-C  No. 10  pp. 809-817
Type of Manuscript:  INVITED PAPER (Special Section on Microwave and Millimeter-Wave Technology)
Category: 
Keyword: 
IoTmillimeter-wave5Gradarphased arrayMIMO
 Summary | Full Text:PDF(2.4MB)

Where, When, and How mmWave is Used in 5G and Beyond
Kei SAKAGUCHI Thomas HAUSTEIN Sergio BARBAROSSA Emilio Calvanese STRINATI Antonio CLEMENTE Giuseppe DESTINO Aarno PÄRSSINEN Ilgyu KIM Heesang CHUNG Junhyeong KIM Wilhelm KEUSGEN Richard J. WEILER Koji TAKINAMI Elena CECI Ali SADRI Liang XIAN Alexander MALTSEV Gia Khanh TRAN Hiroaki OGAWA Kim MAHLER Robert W. HEATH Jr. 
Publication:   
Publication Date: 2017/10/01
Vol. E100-C  No. 10  pp. 790-808
Type of Manuscript:  INVITED PAPER (Special Section on Microwave and Millimeter-Wave Technology)
Category: 
Keyword: 
millimeter waveMEC28GHz60GHzmesh networkV2V/V2Xautomated drivingfuture forecast
 Summary | Full Text:PDF(5.3MB)

Design of Programmable Wideband Low Pass Filter with Continuous-Time/Discrete-Time Hybrid Architecture
Yohei MORISHITA Koichi MIZUNO Junji SATO Koji TAKINAMI Kazuaki TAKAHASHI 
Publication:   
Publication Date: 2017/10/01
Vol. E100-C  No. 10  pp. 858-865
Type of Manuscript:  Special Section PAPER (Special Section on Microwave and Millimeter-Wave Technology)
Category: 
Keyword: 
Continuous TimeDiscrete Timelow pass filterequalizerCMOS
 Summary | Full Text:PDF(1.2MB)

Design and Experimental Evaluation of 60GHz Multiuser Gigabit/s Small Cell Radio Access Based on IEEE 802.11ad/WiGig
Koji TAKINAMI Naganori SHIRAKATA Masashi KOBAYASHI Tomoya URUSHIHARA Hiroshi TAKAHASHI Hiroyuki MOTOZUKA Masataka IRIE Masayuki SHIMIZU Yuji TOMISAWA Kazuaki TAKAHASHI 
Publication:   
Publication Date: 2017/07/01
Vol. E100-B  No. 7  pp. 1075-1085
Type of Manuscript:  Special Section PAPER (Special Section on Smart Radio and Its Applications in Conjunction with Main Topics of SmartCom)
Category: Terrestrial Wireless Communication/Broadcasting Technologies
Keyword: 
IEEE 802.11adWiGig60 GHzsmall cellheterogeneous network5G cellular network
 Summary | Full Text:PDF(6.2MB)

A Wideband Asymmetric Digital Predistortion Architecture for 60 GHz Short Range Wireless Transmitters
Kenji MIYANAGA Masashi KOBAYASHI Noriaki SAITO Naganori SHIRAKATA Koji TAKINAMI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2016/10/01
Vol. E99-C  No. 10  pp. 1190-1199
Type of Manuscript:  Special Section PAPER (Special Section on Microwave and Millimeter-Wave Technology)
Category: 
Keyword: 
digital predistortion (DPD)power amplifier (PA)adjacent channel leakage powercomplex filterwide-bandwidthWiGigCMOS60 GHz
 Summary | Full Text:PDF(1.4MB)

A 60 GHz Hybrid Analog/Digital Beamforming Receiver with Interference Suppression for Multiuser Gigabit/s Radio Access
Koji TAKINAMI Hiroyuki MOTOZUKA Tomoya URUSHIHARA Masashi KOBAYASHI Hiroshi TAKAHASHI Masataka IRIE Takenori SAKAMOTO Yohei MORISHITA Kenji MIYANAGA Takayuki TSUKIZAWA Noriaki SAITO Naganori SHIRAKATA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2016/07/01
Vol. E99-C  No. 7  pp. 856-865
Type of Manuscript:  PAPER
Category: Microwaves, Millimeter-Waves
Keyword: 
IEEE 802.11adWiGig60 GHzdirect conversionCMOSbeamforminginterference suppressioninterference rejection combining
 Summary | Full Text:PDF(2.2MB)

Millimeter-Wave Wireless LAN and Its Extension toward 5G Heterogeneous Networks
Kei SAKAGUCHI Ehab Mahmoud MOHAMED Hideyuki KUSANO Makoto MIZUKAMI Shinichi MIYAMOTO Roya E. REZAGAH Koji TAKINAMI Kazuaki TAKAHASHI Naganori SHIRAKATA Hailan PENG Toshiaki YAMAMOTO Shinobu NANBA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2015/10/01
Vol. E98-B  No. 10  pp. 1932-1948
Type of Manuscript:  INVITED PAPER (Special Section on 5G Radio Access Networks―Part II: Multi-RAT Heterogeneous Networks and Smart Radio Technologies)
Category: 
Keyword: 
millimeter waveIEEE802.11adcoordinated mmw WLAN5G cellular networksheterogeneous networks
 Summary | Full Text:PDF(5.7MB)

Millimeter-Wave Evolution for 5G Cellular Networks
Kei SAKAGUCHI Gia Khanh TRAN Hidekazu SHIMODAIRA Shinobu NANBA Toshiaki SAKURAI Koji TAKINAMI Isabelle SIAUD Emilio Calvanese STRINATI Antonio CAPONE Ingolf KARLS Reza AREFI Thomas HAUSTEIN 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2015/03/01
Vol. E98-B  No. 3  pp. 388-402
Type of Manuscript:  Special Section PAPER (Special Section on Position Papers Exploring Innovative Intelligence and Technologies in Communications)
Category: 
Keyword: 
millimeter-wave5G cellular networksmall cellC-RANsystem rate gain
 Summary | Full Text:PDF(3.7MB)

A 1µs Settling Time Fully Digital AGC System with a 1GHz-Bandwidth Variable Gain Amplifier for WiGig/IEEE802.11ad Multi-Gigabit Wireless Transceivers
Ryo KITAMURA Koichiro TANAKA Tadashi MORITA Takayuki TSUKIZAWA Koji TAKINAMI Noriaki SAITO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2013/10/01
Vol. E96-C  No. 10  pp. 1301-1310
Type of Manuscript:  Special Section PAPER (Special Section on Emerging Technologies and Applications for Microwave and Millimeter-Wave Systems)
Category: 
Keyword: 
variable gain amplifier (VGA)automatic gain control (AGC)digitally-controlledwide-bandwidthwide gain rangeCMOS60GHz
 Summary | Full Text:PDF(3.8MB)

A 60 GHz CMOS Transceiver IC for a Short-Range Wireless System with Amplitude/Phase Imbalance Cancellation Technique
Koji TAKINAMI Junji SATO Takahiro SHIMA Mitsuhiro IWAMOTO Taiji AKIZUKI Masashi KOBAYASHI Masaki KANEMARU Yohei MORISHITA Ryo KITAMURA Takayuki TSUKIZAWA Koichi MIZUNO Noriaki SAITO Kazuaki TAKAHASHI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2012/10/01
Vol. E95-C  No. 10  pp. 1598-1609
Type of Manuscript:  Special Section PAPER (Special Section on Recent Progress in Microwave and Millimeter-Wave Technologies)
Category: 
Keyword: 
CMOSmillimeter-wavedirect conversionamplitude/phase imbalancephase locked loop (PLL)injection locked frequency dividercalibrationpush-push voltage controlled oscillator60 GHz
 Summary | Full Text:PDF(5.5MB)

Design of a Direct Sampling Mixer with a Complex Coefficient Transfer Function
Yohei MORISHITA Noriaki SAITO Koji TAKINAMI Kiyomichi ARAKI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2012/06/01
Vol. E95-C  No. 6  pp. 999-1007
Type of Manuscript:  Special Section PAPER (Special Section on Analog Circuits and Related SoC Integration Technologies)
Category: 
Keyword: 
attenuation poleCharge Domain Filter (CDF)complex filterDirect Sampling Mixer (DSM)discrete time systemsImage Rejection Mixer (IRM)IIR filtersreconfigurable architectures
 Summary | Full Text:PDF(1.3MB) | (Errata[Uploaded on February 1,2014])