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IEICE Trans

Keisuke FUJITA

Closed-Form Expression of Radiation Characteristics for Electrically Small Spherical Helix Antennas
Keisuke FUJITA Keisuke NOGUCHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2023/05/01
Vol. E106-B  No. 5  pp. 459-469
Type of Manuscript:  PAPER
Category: Antennas and Propagation
Keyword: 
antenna theory, electrically small antenna, radiation efficiency, radiation resistance, spherical helix antenna, 
 Summary | Full Text:PDF
Theoretical Limit of the Radiation Efficiency for Electrically Small Self-Resonant Spherical Surface Antennas
Keisuke FUJITA Hiroshi SHIRAI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2017/01/01
Vol. E100-C  No. 1  pp. 20-26
Type of Manuscript:  Special Section PAPER (Special Section on Recent Progress in Electromagnetic Theory and Its Application)
Category: 
Keyword: 
electrically small antennas, spherical helix antennas, spherical wave expansion, self-resonant antennas, 
 Summary | Full Text:PDF
Theoretical Limitation of the Radiation Efficiency for Homogenous Electrically Small Antennas
Keisuke FUJITA Hiroshi SHIRAI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2015/01/01
Vol. E98-C  No. 1  pp. 2-7
Type of Manuscript:  Special Section PAPER (Special Section on Recent Progress in Electromagnetic Theory and Its Application)
Category: 
Keyword: 
electrically small antenna, radiation efficiency, spherical wave functions, 
 Summary | Full Text:PDF