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IEICE Trans

Ryosuke KOBAYASHI

A Novel Quad-Band Branched Monopole Antenna with a Filter Suppressing Higher Order Modes
Shingo YAMAURA Kengo NISHIMOTO Yasuhiro NISHIOKA Ryosuke KOBAYASHI Takahiro INO Yoshio INASAWA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2023/10/01
Vol. E106-B  No. 10  pp. 938-948
Type of Manuscript:  PAPER
Category: Antennas and Propagation
Keyword: 
quad-band, wideband impedance matching, gain stabilization, gain enhancement, higher order modes, 
 Summary | Full Text:PDF
Design and Fabrication of Three-Bit Reconfigurable Bandpass Filter Using Branch-Line Type Variable Resonator
Ryosuke KOBAYASHI Takumi KATO Kazuhiro AZUMA Yasushi YAMAO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2015/07/01
Vol. E98-C  No. 7  pp. 636-643
Type of Manuscript:  Special Section PAPER (Special Section on Microwave and Millimeter-Wave Technology)
Category: Microwaves, Millimeter-Waves
Keyword: 
bandpass filter, transmission line, reconfigurable circuit, quality factor, coupling coefficient, 
 Summary | Full Text:PDF