Naofumi YONEDA


Ka-Band Branch Line Coupler Applied Hexagonal Waveguide Suitable for Additive Manufacturing
Motomi ABE Hidenori YUKAWA Yu USHIJIMA Takuma NISHIMURA Takeshi OSHIMA Takeshi YUASA Naofumi YONEDA 
Publication:   
Publication Date: 2018/10/01
Vol. E101-C  No. 10  pp. 805-814
Type of Manuscript:  PAPER
Category: Microwaves, Millimeter-Waves
Keyword: 
3D printeradditive manufacturingdirect metal laser sinteringhexagonal waveguidebranch line coupler
 Summary | Full Text:PDF(2.8MB)

Accuracy Improvement of Characteristic Basis Function Method by Using Multilevel Approach
Tai TANAKA Yoshio INASAWA Naofumi YONEDA Hiroaki MIYASHITA 
Publication:   
Publication Date: 2018/02/01
Vol. E101-C  No. 2  pp. 96-103
Type of Manuscript:  PAPER
Category: Electromagnetic Theory
Keyword: 
characteristic basis function method (CBFM)method of moments (MoM)radar cross section (RCS)singular value decomposition (SVD)
 Summary | Full Text:PDF(4MB)

A Novel Directional Coupler Loaded with Feedback Capacitances and Its Applications
Motomi ABE Yukihiro TAHARA Tetsu OWADA Naofumi YONEDA Hiroaki MIYASHITA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2016/01/01
Vol. E99-C  No. 1  pp. 85-94
Type of Manuscript:  PAPER
Category: Microwaves, Millimeter-Waves
Keyword: 
feedback capacitancecoupled linestandem 3-dB couplerstubsrectangular coaxial line8×8 HYB matrix
 Summary | Full Text:PDF(3MB)

A PCB Integrated Multi-layered Strip Line Tandem Coupler Using Compensating Ground Through-Hole Elements
Takeshi YUASA Yukihiro TAHARA Tetsu OWADA Naofumi YONEDA Yoshihiko KONISHI Moriyasu MIYAZAKI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2014/10/01
Vol. E97-C  No. 10  pp. 1014-1020
Type of Manuscript:  PAPER
Category: Microwaves, Millimeter-Waves
Keyword: 
printed circuit boardmulti-layered substratecoupled lineground through-holecompensating element
 Summary | Full Text:PDF(899.4KB)

A Millimeter-Wave Resistance Error Tolerant Termination in Multi-Layered LTCC Substrate
Takeshi YUASA Yukihiro TAHARA Naofumi YONEDA Hideyuki OH-HASHI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2011/03/01
Vol. E94-C  No. 3  pp. 321-326
Type of Manuscript:  PAPER
Category: Microwaves, Millimeter-Waves
Keyword: 
multi-layered substrateLTCCterminationresistive filmmanufacturing errorresistance error
 Summary | Full Text:PDF(1MB)

A Waveguide-Based Power Divider Using H-Plane Probes Short-Circuited with Substrate Metallization Patterns
Motomi ABE Yukihiro TAHARA Hideyuki OH-HASHI Naofumi YONEDA Yoshihiko KONISHI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2009/09/01
Vol. E92-C  No. 9  pp. 1144-1149
Type of Manuscript:  Special Section PAPER (Special Section on Recent Progress in Microwave and Millimeter-Wave Technologies and Their Applications)
Category: 
Keyword: 
power dividercoaxial-to-waveguide transitionwaveguidesubstratecoaxial probe
 Summary | Full Text:PDF(959.2KB)

An Elliptic-Function Bandpass Filter Utilizing Left-Handed Operations of an Inter-Digital Coupled Line
Hiromitsu UCHIDA Naofumi YONEDA Yoshihiko KONISHI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2008/11/01
Vol. E91-C  No. 11  pp. 1772-1777
Type of Manuscript:  Special Section PAPER (Special Section on Microwave and Millimeter-wave Technologies)
Category: 
Keyword: 
bandpass filterinter-digital coupled-lineleft-handed operationsnegative couplingattenuation pole
 Summary | Full Text:PDF(478.1KB)

Near-Field to Far-Field Transformation for an Outdoor RCS Range
Yoshio INASAWA Shinji KURODA Ken-ichi KAKIZAKI Hitoshi NISHIKAWA Naofumi YONEDA Shigeru MAKINO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2008/09/01
Vol. E91-C  No. 9  pp. 1463-1471
Type of Manuscript:  PAPER
Category: Electromagnetic Theory
Keyword: 
radar cross sectionnear-field measurementground bounceRCS predictionnear-field to far-field transformation
 Summary | Full Text:PDF(1.4MB)