Keizo CHO

Elliptical Disk Monopole Antenna with Diode for PIM Measurement Facility Assessment
Kenji IRIE  Nobuhiro KUGA  Keizo CHO 
Publication:   B - Abstracts of IEICE TRANSACTIONS on Communications (Japanese Edition)
Publication Date: 2011/09/01
Vol. J94-B  No. 9  pp. 1146-1152
Type of Manuscript: Special Section PAPER (Special Issue on Antenna and Propagation Technologies Underpinning Advances and Diversification of Wireless Communications)
Category: 
Keyword: 
monopole antenna,  passive intermodulation,  base-station antenna,  satellite communication,  non-linear phenomena, 
  Summary |  Full Text(in Japanese):PDF (888.1KB)
Dipole Antenna with Reflector Comprising Partial Cylindrical Parasitic Element
Huiling JIANG  Ryo YAMAGUCHI  Keizo CHO 
Publication:   B - Abstracts of IEICE TRANSACTIONS on Communications (Japanese Edition)
Publication Date: 2010/04/01
Vol. J93-B  No. 4  pp. 721-724
Type of Manuscript: LETTER
Category: 
Keyword: 
dipole antenna with reflector,  wideband antenna,  partial cylindrical parasitic element,  FDTD method, 
  Summary |  Full Text(in Japanese):PDF (688.9KB)
Radiation Properties of Rectangular Microstrip Antenna Located by Mushroom Structures
Yuki KAWAKAMI  Toshikazu HORI  Mitoshi FUJIMOTO  Ryo YAMAGUCHI  Keizo CHO 
Publication:   B - Abstracts of IEICE TRANSACTIONS on Communications (Japanese Edition)
Publication Date: 2009/09/01
Vol. J92-B  No. 9  pp. 1475-1478
Type of Manuscript: Special Section PAPER (Special Issue on Simulation and Analysis Methods for Antennas and Propagation Technologies)
Category: 
Keyword: 
mushroom structures,  rectangular MSA,  arrangement method,  gain, 
  Summary |  Full Text(in Japanese):PDF (375.1KB)
Base Station and Terminal Antenna Technologies Required for Next Generation Mobile Communication Systems
Keizo CHO  Ryo YAMAGUCHI  Huiling JIANG 
Publication:   B - Abstracts of IEICE TRANSACTIONS on Communications (Japanese Edition)
Publication Date: 2008/09/01
Vol. J91-B  No. 9  pp. 886-900
Type of Manuscript: Special Section PAPER (Special Issue on Emerging Technologies of Antennas and Propagation Supporting High-speed Wireless Communications)
Category: 
Keyword: 
Mobile communication,  Base station antenna,  Handset antenna,  RF integrated antenna,  Multi antenna,  MIMO, 
  Summary |  Full Text(in Japanese):PDF (1MB)
Design of Microstrip Lens Beam Forming Network for Phase-Center Adjustment of Cluster Feeds
Fumio KIRA  Keizo CHO 
Publication:   C - Abstracts of IEICE TRANSACTIONS on Electronics (Japanese Edition)
Publication Date: 2006/05/01
Vol. J89-C  No. 5  pp. 329-338
Type of Manuscript: Special Section PAPER (Special Issue on Microwave and Millimeter Wave Planar Circuit and Related Technology)
Category: 
Keyword: 
BFN,  microstrip lens,  cluster feeding,  phase center,  focal curve, 
  Summary |  Full Text(in Japanese):PDF (7.8MB)