Koichi WATANABE

Ultra-Wideband, Differential-Mode Bandpass Filters with Four Coupled Lines Embedded in Self-Complementary Antennas
Akira SAITOU Kyoung-Pyo AHN Hajime AOKI Kazuhiko HONJO Koichi WATANABE 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2007/07/01
Vol. E90-C  No. 7  pp. 1524-1532
Type of Manuscript:  PAPER
Category: Electronic Circuits
Keyword: 
differential mode, antennas, band-pass filters, notch filters, low-pass filters, impedance transformer, 
 Summary | Full Text:PDF
Microwave-Circuit-Embedded Resin Printed Circuit Board for Short Range Wireless Interfaces
Akira SAITOU Kazuhiko HONJO Kenichi SATO Toyoko KOYAMA Koichi WATANABE 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2005/01/01
Vol. E88-C  No. 1  pp. 83-88
Type of Manuscript:  Special Section PAPER (Special Section on Recent Trends of Microwave and Millimeter-Wave Passive Circuit Components and Technologies for Improvement of Characteristics)
Category: 
Keyword: 
microwave, resin, PCB, balun, BPF, loss, integration, 
 Summary | Full Text:PDF
High Performance InP/InGaAs HBTs for 40-Gb/s Optical Transmission ICs
Hiroshi MASUDA Kiyoshi OUCHI Akihisa TERANO Hideyuki SUZUKI Koichi WATANABE Tohru OKA Hirokazu MATSUBARA Tomonori TANOUE 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1999/03/25
Vol. E82-C  No. 3  pp. 419-427
Type of Manuscript:  INVITED PAPER (Special Issue on Ultra-High-Speed IC and LSI Technology)
Category: 
Keyword: 
InP/InGaAs, HBT, T-shaped emitter electrode, gas-source MBE, Pt-based metal, InP subcollector, thermal runaway, static 1/2 frequency divider, 
 Summary | Full Text:PDF