Yoshihisa YAMADA


EMI Reduction by Spread-Spectrum Clocking in Digitally-Controlled DC-DC Converters
Ibuki MORI Yoshihisa YAMADA Santhos A. WIBOWO Masashi KONO Haruo KOBAYASHI Yukihiro FUJIMURA Nobukazu TAKAI Toshio SUGIYAMA Isao FUKAI Norihisa ONISHI Ichiro TAKEDA Jun-ichi MATSUDA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2009/04/01
Vol. E92-A  No. 4  pp. 1004-1011
Type of Manuscript:  Special Section PAPER (Special Section on Advanced Technologies Emerging Mainly from the 21st Workshop on Circuits and Systems in Karuizawa)
Category: 
Keyword: 
PWM controlspread-spectrum clock modulationEMIdigitally-controlled DC-DC converter
 Summary | Full Text:PDF(1.4MB)

Reducing Spurious Output of Balanced Modulators by Dynamic Matching of I, Q Quadrature Paths
Jun OTSUKI Hao SAN Haruo KOBAYASHI Takanori KOMURO Yoshihisa YAMADA Aiyan LIU 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2005/06/01
Vol. E88-C  No. 6  pp. 1290-1294
Type of Manuscript:  Special Section LETTER (Special Section on Analog Circuit and Device Technologies)
Category: AD/DA
Keyword: 
Cartesian transmitterarbitrary waveform generatorIQ mismatchSFDRspread spectrum
 Summary | Full Text:PDF(600.7KB)