Toshio NOJIMA


A Wideband Array Antenna Using Leaf-Shaped Bowtie Radiating Elements and Series-Parallel Feed Network
Manabu YAMAMOTO Takehito MUNEKATA Toshio NOJIMA 
Publication:   C - Abstracts of IEICE TRANSACTIONS on Electronics (Japanese Edition)
Publication Date: 2015/12/01
Vol. J98-C  No. 12  pp. 447-450
Type of Manuscript:  Special Section LETTER (Special Section on Microwave Technologies Launched from Universities)
Category: 
Keyword: 
wideband array antennaleaf-shaped bowtie antennaseries-parallel feed networks
 Summary | Full Text(in Japanese):PDF(697.2KB)

A Wideband 4-Port MIMO Antenna Using Leaf-Shaped Bowtie Radiating Elements
Shohei MAEDA Manabu YAMAMOTO Toshio NOJIMA 
Publication:   B - Abstracts of IEICE TRANSACTIONS on Communications (Japanese Edition)
Publication Date: 2015/09/01
Vol. J98-B  No. 9  pp. 886-895
Type of Manuscript:  Special Section PAPER (Special Section on Antenna and Propagation Which Keeps Drawing the Future by the Radio and the Relation System)
Category: 
Keyword: 
leaf-shaped bowtie slot antennaleaf-shaped bowtie monopole antennawide band antennaMIMOUWB
 Summary | Full Text(in Japanese):PDF(2.3MB)

Propagation Characteristic Estimations of 5GHz-band Wireless Links in High-Speed Train Cars Using FDTD Analysis
Masami SHIRAFUNE Takashi HIKAGE Toshio NOJIMA Motoharu SASAKI Wataru YAMADA Takatoshi SUGIYAMA 
Publication:   B - Abstracts of IEICE TRANSACTIONS on Communications (Japanese Edition)
Publication Date: 2014/09/01
Vol. J97-B  No. 9  pp. 762-769
Type of Manuscript:  Special Section PAPER (Special Section on Antennas and Propagation Technologies Supporting the Foundations of Wireless Systems)
Category: 
Keyword: 
wireless LANhigh-speed train carspropagation characteristicslarge-scale FDTD analysis
 Summary | Full Text(in Japanese):PDF(3.5MB)

Numerical Estimation on Aircraft Interference Path Loss due to Wireless LAN Terminal Using a Large-Scale FDTD Analysis
Masami SHIRAFUNE Takashi HIKAGE Toshio NOJIMA Syunichi FUTATSUMORI Akiko KOHMURA Naruto YONEMOTO 
Publication:   C - Abstracts of IEICE TRANSACTIONS on Electronics (Japanese Edition)
Publication Date: 2014/05/01
Vol. J97-C  No. 5  pp. 197-200
Type of Manuscript:  Special Section LETTER (Special Section on Recent Progress in Simulation Techniques for Electronics)
Category: 
Keyword: 
path lossaircraftwireless LANpropagation characteristicsFDTD analysis
 Summary | Full Text(in Japanese):PDF(1.4MB)

Leaf-Shaped Bowtie Slot Antenna for UWB Applications
Manabu YAMAMOTO So FUJITA Toshio NOJIMA 
Publication:   B - Abstracts of IEICE TRANSACTIONS on Communications (Japanese Edition)
Publication Date: 2012/09/01
Vol. J95-B  No. 9  pp. 1181-1184
Type of Manuscript:  Special Section LETTER (Special Section on Antennas and Propagation Technologies for Progress in Wireless Systems)
Category: 
Keyword: 
leaf-shaped bowtie slot antennawideband antennaself complementary structureUWB radio systems
 Summary | Full Text(in Japanese):PDF(604.1KB)

Ultra-Wideband Leaf-Shaped Bowtie Antenna with Band-Rejected Characteristics
Toshikazu MATSUSHIMA Manabu YAMAMOTO Toshio NOJIMA 
Publication:   B - Abstracts of IEICE TRANSACTIONS on Communications (Japanese Edition)
Publication Date: 2010/09/01
Vol. J93-B  No. 9  pp. 1283-1287
Type of Manuscript:  Special Section PAPER (Special Issue on Antennas and Propagation Supporting Advanced Wireless System)
Category: 
Keyword: 
leaf-shaped bowtie antennaUWBband-rejection
 Summary | Full Text(in Japanese):PDF(211.2KB)

Novel 5th-Order Intermodulation Distortion Compensation Based upon 2nd-Harmonics Injection (2nd-HI) and Its Application to Wide Dynamic Range Hybrid Predistortion for a 2-GHz Power Amplifier
Hiroshi MATSUBARA Kazuhiro ISHIHARA Norihisa MIYADAI Toshio NOJIMA 
Publication:   C - Abstracts of IEICE TRANSACTIONS on Electronics (Japanese Edition)
Publication Date: 2008/12/01
Vol. J91-C  No. 12  pp. 711-718
Type of Manuscript:  Special Section PAPER (Special Issue on Microwave Technologies Launched from Universities)
Category: 
Keyword: 
power amplifier5th-order distortion2nd-harmonics injectionpredistortion
 Summary | Full Text(in Japanese):PDF(841.7KB)

A Study on Two-Dimensional Array Composed of Leaf-Shaped Bowtie Antenna with Flat Reflector for UWB Application
Yoshinori ITO Michitaka AMEYA Manabu YAMAMOTO Toshio NOJIMA 
Publication:   B - Abstracts of IEICE TRANSACTIONS on Communications (Japanese Edition)
Publication Date: 2008/09/01
Vol. J91-B  No. 9  pp. 1029-1036
Type of Manuscript:  Special Section PAPER (Special Issue on Emerging Technologies of Antennas and Propagation Supporting High-speed Wireless Communications)
Category: 
Keyword: 
leaf-shaped bowtie antennatwo-dimensional arrayUWBwave-distortioncross-correlation
 Summary | Full Text(in Japanese):PDF(917.7KB)

Performance of Unbalanced-Feed Dipole Antenna Arranged on a Slotted Ground Plane
Manabu YAMAMOTO Yuta SAITO Toshio NOJIMA 
Publication:   C - Abstracts of IEICE TRANSACTIONS on Electronics (Japanese Edition)
Publication Date: 2007/12/01
Vol. J90-C  No. 12  pp. 951-955
Type of Manuscript:  Special Section PAPER (Special Issue on Microwave Technologies Launched from Universities)
Category: 
Keyword: 
dipole antennaunbalanced-feedhuman phantomradiation efficiencyFDTD analysis
 Summary | Full Text(in Japanese):PDF(498.4KB)

Estimation Method for Electromagnetic Fields in Echoic Environments Using Large Scale FDTD Analysis and Histogram Representation
Yusuke ABIKO Louis-Ray HARRIS Takashi HIKAGE Toshio NOJIMA Soichi WATANABE Takashi SHINOZUKA 
Publication:   B - Abstracts of IEICE TRANSACTIONS on Communications (Japanese Edition)
Publication Date: 2007/11/01
Vol. J90-B  No. 11  pp. 1097-1105
Type of Manuscript:  Special Section PAPER (Special Section on Broadband EMC Technologies)
Category: 
Keyword: 
electromagnetic fields in echoic environmentlarge-scale parallel computationfinite difference time domain (FDTD) techniquehistogrampacemaker EMI
 Summary | Full Text(in Japanese):PDF(1.6MB)

Improvement of Radiation Characteristics of Self-Complementary UWB Printed Dipole Antenna
Michitaka AMEYA Manabu YAMAMOTO Toshio NOJIMA Kiyohiko ITO 
Publication:   B - Abstracts of IEICE TRANSACTIONS on Communications (Japanese Edition)
Publication Date: 2006/09/01
Vol. J89-B  No. 9  pp. 1820-1823
Type of Manuscript:  Special Section LETTER (Special Issue on Design, Analysis and Measurement Techniques in Antennas and Propagation to Meet Expanding Applications of Radio Systems)
Category: 
Keyword: 
printed dipole antennaUWBself-complementarywaveform distortion
 Summary | Full Text(in Japanese):PDF(639.1KB)

45-Degrees Linearly Polarized Printed Slot Array Antenna in which Radiating Elements are Arranged on Both Sides of Feedline
Takahiro ISHIGAKI Manabu YAMAMOTO Toshio NOJIMA Kiyohiko ITO 
Publication:   B - Abstracts of IEICE TRANSACTIONS on Communications (Japanese Edition)
Publication Date: 2006/09/01
Vol. J89-B  No. 9  pp. 1688-1695
Type of Manuscript:  Special Section PAPER (Special Issue on Design, Analysis and Measurement Techniques in Antennas and Propagation to Meet Expanding Applications of Radio Systems)
Category: 
Keyword: 
printed slotarray antenna45-degrees linear polarizationmicrostrip line
 Summary | Full Text(in Japanese):PDF(1.6MB)

Basic Circuit Construction of Microwave Superconducting Reaction Type Transmitting Filter Using Novel Split Open-Ring Resonator
Shunichi FUTATSUMORI Takashi HIKAGE Toshio NOJIMA 
Publication:   C - Abstracts of IEICE TRANSACTIONS on Electronics (Japanese Edition)
Publication Date: 2006/05/01
Vol. J89-C  No. 5  pp. 266-273
Type of Manuscript:  Special Section PAPER (Special Issue on Microwave and Millimeter Wave Planar Circuit and Related Technology)
Category: 
Keyword: 
reaction type filterHigh-Temperature Superconductorpower handling capabilitysplit open-ring resonator
 Summary | Full Text(in Japanese):PDF(714.6KB)