Naofumi YONEDA


Design of the Circularly Polarized Ring Microstrip Antenna with Shorting Pins
Jun GOTO Akimichi HIROTA Kyosuke MOCHIZUKI Satoshi YAMAGUCHI Kazunari KIHIRA Toru TAKAHASHI Hideo SUMIYOSHI Masataka OTSUKA Naofumi YONEDA Jiro HIROKAWA 
Publication:   
Publication Date: 2022/01/01
Vol. E105-B  No. 1  pp. 34-43
Type of Manuscript:  PAPER
Category: Antennas and Propagation
Keyword: 
array antennadual bandring microstrip antennashorting pin
 Summary | Full Text:PDF(3.9MB)

Design of the Traveling-Wave Series-Fed Microstrip Antenna Array with Power Control Slits of Unequal Inter-Element Spacing
Jun GOTO Makoto MATSUKI Takashi MARUYAMA Toru FUKASAWA Naofumi YONEDA Jiro HIROKAWA 
Publication:   
Publication Date: 2021/06/01
Vol. E104-B  No. 6  pp. 624-629
Type of Manuscript:  PAPER
Category: Antennas and Propagation
Keyword: 
array antennamicrostripseries-fedtraveling-wave
 Summary | Full Text:PDF(2.2MB)

A Suspended Stripline Fed Dual-Polarized Open-Ended Waveguide Subarray with Metal Posts for Phased Array Antennas
Narihiro NAKAMOTO Toru TAKAHASHI Toru FUKASAWA Naofumi YONEDA Hiroaki MIYASHITA 
Publication:   
Publication Date: 2021/03/01
Vol. E104-B  No. 3  pp. 295-303
Type of Manuscript:  PAPER
Category: Antennas and Propagation
Keyword: 
antenna arraydual-polarizationopen ended waveguidephased arraysuspended stripline
 Summary | Full Text:PDF(5.3MB)

180-Degree Branch Line Coupler Composed of Two Types of Iris-Loaded Waveguides
Hidenori YUKAWA Yu USHIJIMA Naofumi YONEDA Moriyasu MIYAZAKI 
Publication:   
Publication Date: 2021/02/01
Vol. E104-C  No. 2  pp. 85-92
Type of Manuscript:  PAPER
Category: Microwaves, Millimeter-Waves
Keyword: 
waveguidebranch linecoupleriris-loadedphase shifter
 Summary | Full Text:PDF(2.1MB)

S-Parameter Analysis for Balanced and Unbalanced Modes Corresponding Dissipated Power of a Small Antenna
Takashi YANAGI Yasuhiro NISHIOKA Toru FUKASAWA Naofumi YONEDA Hiroaki MIYASHITA 
Publication:   
Publication Date: 2020/07/01
Vol. E103-B  No. 7  pp. 780-786
Type of Manuscript:  PAPER
Category: Antennas and Propagation
Keyword: 
balanced modeunbalanced modeS-parameterself-balancingmeasurement
 Summary | Full Text:PDF(1.9MB)

Metal 3D-Printed T-Junction Ortho-Mode-Transducer with an Offset Stepped Post
Hidenori YUKAWA Yu USHIJIMA Motomi ABE Takeshi OSHIMA Naofumi YONEDA Moriyasu MIYAZAKI 
Publication:   
Publication Date: 2019/01/01
Vol. E102-C  No. 1  pp. 56-63
Type of Manuscript:  PAPER
Category: Microwaves, Millimeter-Waves
Keyword: 
waveguideantenna feedortho-mode-transducer3D-printer
 Summary | Full Text:PDF(1.8MB)

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)