Toshihiko YOSHIMASU


A 5-GHz Band WLAN SiGe HBT Power Amplifier IC with Novel Adaptive-Linearizing CMOS Bias Circuit
Xin YANG Tsuyoshi SUGIURA Norihisa OTANI Tadamasa MURAKAMI Eiichiro OTOBE Toshihiko YOSHIMASU 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2015/07/01
Vol. E98-C  No. 7  pp. 651-658
Type of Manuscript:  Special Section PAPER (Special Section on Microwave and Millimeter-Wave Technology)
Category: Active Circuits/Devices/Monolithic Microwave Integrated Circuits
Keyword: 
linear power amplifieradaptive-linearizing bias0.35µm SiGe BiCMOSEVMWLAN
 Summary | Full Text:PDF

A CMOS Class-G Supply Modulation for Polar Power Amplifiers with High Average Efficiency and Low Ripple Noise
Qing LIU Jiangtao SUN YongJu SUH Nobuyuki ITOH Toshihiko YOSHIMASU 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2012/02/01
Vol. E95-A  No. 2  pp. 487-497
Type of Manuscript:  Special Section PAPER (Special Section on Analog Circuit Techniques and Related Topics)
Category: 
Keyword: 
power amplifierRWDMLDOsupply modulationaverage efficiency
 Summary | Full Text:PDF

A 66-dBc Fundamental Suppression Frequency Doubler IC for UWB Sensor Applications
Jiangtao SUN Qing LIU Yong-Ju SUH Takayuki SHIBATA Toshihiko YOSHIMASU 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2011/04/01
Vol. E94-C  No. 4  pp. 575-581
Type of Manuscript:  Special Section PAPER (Special Section on Circuits and Design Techniques for Advanced Large Scale Integration)
Category: 
Keyword: 
frequency doublerhigh suppressionhigh conversion gainlow input powerUWB sensor
 Summary | Full Text:PDF

A Broadband High Suppression Frequency Doubler IC for Sub-Millimeter-Wave UWB Applications
Jiangtao SUN Qing LIU Yong-Ju SUH Takayuki SHIBATA Toshihiko YOSHIMASU 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2011/02/01
Vol. E94-A  No. 2  pp. 603-610
Type of Manuscript:  Special Section PAPER (Special Section on Analog Circuit Techniques and Related Topics)
Category: 
Keyword: 
frequency doublerbroadbandhigh suppressionlow driver powerSiGe BiCMOS
 Summary | Full Text:PDF

A 1.2-3.2 GHz CMOS VCO IC Utilizing Transformer-Based Variable Inductors and AMOS Varactors
Qing LIU Yusuke TAKIGAWA Satoshi KURACHI Nobuyuki ITOH Toshihiko YOSHIMASU 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2011/02/01
Vol. E94-A  No. 2  pp. 568-573
Type of Manuscript:  Special Section PAPER (Special Section on Analog Circuit Techniques and Related Topics)
Category: 
Keyword: 
AMOS varactorCMOStransformer-based variable inductorwide-tuning range
 Summary | Full Text:PDF

A SiGe BiCMOS VCO IC with Highly Linear Kvco for 5-GHz-Band Wireless LANs
Satoshi KURACHI Toshihiko YOSHIMASU Haiwen LIU Nobuyuki ITOH Koji YONEMURA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2007/06/01
Vol. E90-C  No. 6  pp. 1228-1233
Type of Manuscript:  Special Section PAPER (Special Section on Analog Circuits and Related SoC Integration Technologies)
Category: 
Keyword: 
SiGeVCOresonant circuitVCO gain5-GHz-bandWLAN
 Summary | Full Text:PDF

Low Phase Noise, InGaP/GaAs HBT VCO MMIC for Millimeter-Wave Applications
Satoshi KURACHI Toshihiko YOSHIMASU 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2005/04/01
Vol. E88-C  No. 4  pp. 678-682
Type of Manuscript:  Special Section PAPER (Special Section on Fundamental and Application of Advanced Semiconductor Devices)
Category: Compound Semiconductor Devices
Keyword: 
InGaP/GaAs HBTVCOmillimeter-wavelow phase noise
 Summary | Full Text:PDF