Koji YOSHIDA


Ku/Ka-band Compact Orthomode Junction with Low Pass Filters for High Power Applications
Hidenori YUKAWA Koji YOSHIDA Tomohiro MIZUNO Tetsu OWADA Moriyasu MIYAZAKI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2015/02/01
Vol. E98-C  No. 2  pp. 156-161
Type of Manuscript:  PAPER
Category: Microwaves, Millimeter-Waves
Keyword: 
waveguideantenna feedpolarizationorthomode junctionwideband
 Summary | Full Text:PDF

Noise Post-Processing for Low Bit-Rate CELP Coders
Hiroyuki EHARA Kazutoshi YASUNAGA Koji YOSHIDA Yusuke HIWASAKI Kazunori MANO Takao KANEKO 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2004/06/01
Vol. E87-D  No. 6  pp. 1507-1516
Type of Manuscript:  PAPER
Category: Speech and Hearing
Keyword: 
CELPbackground noisepost-processingframe erasureITU-T
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4-kbit/s Multi-Dispersed-Pulse-Based CELP (MDP-CELP) Speech Coder
Hiroyuki EHARA Koji YOSHIDA Kazutoshi YASUNAGA Toshiyuki MORII 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2002/02/01
Vol. E85-D  No. 2  pp. 392-401
Type of Manuscript:  PAPER
Category: Speech and Hearing
Keyword: 
CELP codingspeech codingnoise post-processingbackward adaptive mode switching4-kbit/s
 Summary | Full Text:PDF

Reflection of Light Caused by Sharp Bends in Optical Fiber
Kyozo TSUJIKAWA Koji ARAKAWA Koji YOSHIDA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1999/11/25
Vol. E82-C  No. 11  pp. 2105-2107
Type of Manuscript:  LETTER
Category: Opto-Electronics
Keyword: 
reflectionsharp bends in optical fiberbending lossOTDROLCRfiber coating
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A Novel Zero-Voltage-Switched Half-Bridge Converter with Active Current-Clamped Transformer
Koji YOSHIDA Tamotsu NINOMIYA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1998/12/25
Vol. E81-B  No. 12  pp. 2544-2552
Type of Manuscript:  PAPER
Category: Power Supply
Keyword: 
half-bridge converterzero-voltage-switchingactive current-clamped transformerlow-voltage DC/DC converter
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Mechanical Optical Switch for Single Mode Fiber
Masanobu SHIMIZU Koji YOSHIDA Toshihiko OHTA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1993/04/25
Vol. E76-B  No. 4  pp. 370-374
Type of Manuscript:  Special Section PAPER (Special Issue on Optical Fiber Cables and Related Technologies)
Category: 
Keyword: 
mechanical switchSMFplastic ferrule transfer moldoptical communication
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Time-Domain Analysis Methods for Switching Converters Using Eigen-Value and Eigen-Vector Calculations
Ichirou OOTA Fumio UENO Takahiro INOUE Koji YOSHIDA 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1989/10/25
Vol. E72-E  No. 10  pp. 1135-1140
Type of Manuscript:  PAPER
Category: Electronic Circuits
Keyword: 
 Summary | Full Text:PDF