Daisuke KOIZUMI

Tunable Resonator Employing Comb-shaped Transmission Line and Semiconductor Switches
Kunihiro KAWAI Daisuke KOIZUMI Hiroshi OKAZAKI Shoichi NARAHASHI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2014/08/01
Vol. E97-C  No. 8  pp. 795-802
Type of Manuscript:  PAPER
Category: Microwaves, Millimeter-Waves
Keyword: 
Tunable resonators, microstrip lines, switches, 
 Summary | Full Text:PDF
Broadside Coupling High-Temperature Superconducting Dual-Band Bandpass Filter
Yuta TAKAGI Kei SATOH Daisuke KOIZUMI Shoichi NARAHASHI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2013/08/01
Vol. E96-C  No. 8  pp. 1033-1040
Type of Manuscript:  PAPER
Category: Microwaves, Millimeter-Waves
Keyword: 
bandpass filters, dual-band, resonator filters, broadside coupling, high-temperature superconducting, YBCO, 
 Summary | Full Text:PDF
A Novel Compact HTS Interdigital Bandpass Filter Using CPW Quarter-Wavelength Resonators
Zhewang MA Tamio KAWAGUCHI Yoshio KOBAYASHI Daisuke KOIZUMI Kei SATOH Shoichi NARAHASHI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2006/02/01
Vol. E89-C  No. 2  pp. 140-144
Type of Manuscript:  Special Section PAPER (Special Section on Superconducting High-frequency Devices)
Category: 
Keyword: 
high temperature superconductor, coplanar waveguide, bandpass filter, 
 Summary | Full Text:PDF