Akihiro YAMAGISHI


Operation of Ultra-Low Leakage Regulator Circuits with SOI and Bulk Technologies for Controlling Wireless Transceivers
Mamoru UGAJIN Akihiro YAMAGISHI Kenji SUZUKI Mitsuru HARADA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2011/10/01
Vol. E94-C  No. 10  pp. 1702-1705
Type of Manuscript:  BRIEF PAPER
Category: Electronic Circuits
Keyword: 
power managementpower-switchenergy harvestingCMOS
 Summary | Full Text:PDF(463.8KB)

A 2.4-GHz PLL Synthesizer for a 1-V Bluetooth RF Transceiver
Akihiro YAMAGISHI Mamoru UGAJIN Tsuneo TSUKAHARA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2004/06/01
Vol. E87-C  No. 6  pp. 895-900
Type of Manuscript:  Special Section PAPER (Special Section on Analog Circuit and Device Technologies)
Category: 
Keyword: 
PLLsynthesizerlow-powerphase noiseBluetooth
 Summary | Full Text:PDF(741.7KB)

A Fractional Phase Interpolator Using Two-Step Integration for Frequency Multiplication and Direct Digital Synthesis
Hideyuki NOSAKA Yo YAMAGUCHI Akihiro YAMAGISHI Masahiro MURAGUCHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2003/02/01
Vol. E86-A  No. 2  pp. 304-312
Type of Manuscript:  Special Section PAPER (Special Section on Analog Circuit Techniques and Related Topics)
Category: 
Keyword: 
DDSfrequency synthesizersjitter eliminationwireless communications
 Summary | Full Text:PDF(1.6MB)

A Low-Voltage 6-GHz-Band CMOS Monolithic LC-Tank VCO Using a Tuning-Range Switching Technique
Akihiro YAMAGISHI Tsuneo TSUKAHARA Mitsuru HARADA Junichi KODATE 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2001/02/01
Vol. E84-A  No. 2  pp. 559-562
Type of Manuscript:  Special Section LETTER (Special Section on Analog Circuit Techniques Supporting the System LSI Era)
Category: 
Keyword: 
voltage-controlled oscillatorwirelessCMOSSIMOXphase noise
 Summary | Full Text:PDF(463.4KB)

A Very Low Spurious Si-Bipolar Frequency Multiplier
Yo YAMAGUCHI Akihiro YAMAGISHI Akira MINAKAWA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1999/07/25
Vol. E82-C  No. 7  pp. 1092-1097
Type of Manuscript:  Special Section PAPER (Special Issue on Microwave and Millimeter Wave Technology)
Category: Active Devices and Circuits
Keyword: 
multiplierlow spuriousSi bipolarfrequency doubler
 Summary | Full Text:PDF(787.6KB)

A Phase Interpolation Direct Digital Synthesizer with a Symmetrically Structured Delay Generator
Hideyuki NOSAKA Tadao NAKAGAWA Akihiro YAMAGISHI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1999/07/25
Vol. E82-C  No. 7  pp. 1067-1072
Type of Manuscript:  Special Section PAPER (Special Issue on Microwave and Millimeter Wave Technology)
Category: Active Devices and Circuits
Keyword: 
direct digital synthesizerfrequency synthesizerdelay generatorspread spectrumjitter elimination
 Summary | Full Text:PDF(1.8MB)

A Fast Frequency Switching Synthesizer with a Digitally Controlled Delay Generator
Hideyuki NOSAKA Tadao NAKAGAWA Akihiro YAMAGISHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1998/07/25
Vol. E81-A  No. 7  pp. 1466-1472
Type of Manuscript:  Special Section PAPER (Special Section on Fundamentals of Multi-dimensional Mobile Information Network)
Category: 
Keyword: 
direct digital synthesizerfrequency synthesizerlow powerspread spectrumfrequency hoppingspurious signals
 Summary | Full Text:PDF(533.2KB)