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IEICE Trans

Toru TAKAHASHI

Axial Ratio Improvement for Wide-Angle Scanning Circularly-Polarized Phased Array of Circular Patch Antennas
Narihiro NAKAMOTO Hikaru WATANABE Toru TAKAHASHI Yoshio INASAWA Naoki SHINOHARA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2025/06/01
Vol. E108-B  No. 6  pp. 721-732
Type of Manuscript:  PAPER
Category: Antennas and Propagation
Keyword: 
axial ratio, circular polarirzation, patch antenna, phased array, 
 Summary | Full Text:PDF
Study on a Doppler-Tolerant Waveform Design for Joint Radar and Communication Systems
Toru TAKAHASHI Yasunori KATO Kentaro ISODA Yusuke KITSUKAWA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2025/02/01
Vol. E108-B  No. 2  pp. 189-207
Type of Manuscript:  PAPER
Category: Sensing
Keyword: 
Doppler-tolerance, joint radar and communication system, linear-frequency-modulated pulse, orthogonal frequency-division multiplexing, waveform design, 
 Summary | Full Text:PDF
Uniaxially Symmetrical T-Junction OMT with 45° -Tilted Branch Waveguide Ports
Hidenori YUKAWA Yu USHIJIMA Toru TAKAHASHI Toru FUKASAWA Yoshio INASAWA Naofumi YONEDA Moriyasu MIYAZAKI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2024/03/01
Vol. E107-C  No. 3  pp. 57-65
Type of Manuscript:  PAPER
Category: Electromagnetic Theory
Keyword: 
linear polarizations, waveguide components, T-junction, OMT, 3D printing, 
 Summary | Full Text:PDF
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:   IEICE TRANSACTIONS on Communications
Publication Date: 2022/01/01
Vol. E105-B  No. 1  pp. 34-43
Type of Manuscript:  PAPER
Category: Antennas and Propagation
Keyword: 
array antenna, dual band, ring microstrip antenna, shorting pin, 
 Summary | Full Text:PDF
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:   IEICE TRANSACTIONS on Communications
Publication Date: 2021/03/01
Vol. E104-B  No. 3  pp. 295-303
Type of Manuscript:  PAPER
Category: Antennas and Propagation
Keyword: 
antenna array, dual-polarization, open ended waveguide, phased array, suspended stripline, 
 Summary | Full Text:PDF
Sidelobe Canceller Using Multiple Quantized Weights Combining for Reducing Excitation Error
Tasuku KURIYAMA Kazunari KIHIRA Toru TAKAHASHI Yoshihiko KONISHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2013/10/01
Vol. E96-B  No. 10  pp. 2483-2490
Type of Manuscript:  Special Section PAPER (Special Section on Recent Progress in Antennas and Propagation in Conjunction with Main Topics of ISAP2012)
Category: Adaptive Array Antennas/MIMO
Keyword: 
sidelobe canceller, excitation error, null forming, 
 Summary | Full Text:PDF
Inclined Slot Array Antennas on a Hollow Rectangular Coaxial Line
Satoshi YAMAGUCHI Yukihiro TAHARA Toru TAKAHASHI Kazushi NISHIZAWA Hiroaki MIYASHITA Yoshihiko KONISHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2012/09/01
Vol. E95-B  No. 9  pp. 2870-2877
Type of Manuscript:  PAPER
Category: Antennas and Propagation
Keyword: 
rectangular coaxial line, waveguide, slot array antenna, inclined linear polarization, 
 Summary | Full Text:PDF
Ultra-Wideband Tapered Slot Antenna Arrays with Parallel-Plate Waveguides
Satoshi YAMAGUCHI Hiroaki MIYASHITA Toru TAKAHASHI Masataka OTSUKA Yoshihiko KONISHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2010/05/01
Vol. E93-B  No. 5  pp. 1248-1255
Type of Manuscript:  PAPER
Category: Antennas and Propagation
Keyword: 
tapered slot antenna, parallel-plate waveguides, wideband antenna, array antenna, FDTD, 
 Summary | Full Text:PDF
Mixture Density Models Based on Mel-Cepstral Representation of Gaussian Process
Toru TAKAHASHI Keiichi TOKUDA Takao KOBAYASHI Tadashi KITAMURA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2003/08/01
Vol. E86-A  No. 8  pp. 1971-1978
Type of Manuscript:  Special Section PAPER (Special Section on Digital Signal Processing)
Category: 
Keyword: 
Gaussian mixture model, statistical framework, mel-cepstrum, EM algorithm, 
 Summary | Full Text:PDF
Perturbational Analysis of Microstrip Antennas with Meshed Ground Planes
Toru TAKAHASHI Isamu CHIBA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2002/09/01
Vol. E85-B  No. 9  pp. 1787-1796
Type of Manuscript:  PAPER
Category: Antenna and Propagation
Keyword: 
microstrip antenna, meshed ground plane, perturbation, resonant frequency, backward radiation, 
 Summary | Full Text:PDF
Direction of Next Generation Internet eXchanges
Ikuo NAKAGAWA Eisuke HAYASHI Toru TAKAHASHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2001/08/01
Vol. E84-B  No. 8  pp. 1989-1995
Type of Manuscript:  INVITED PAPER (Special Issue on Internet Technology)
Category: Internet Architecture
Keyword: 
Internet eXchange, interconnection, peering, BGP4, 
 Summary | Full Text:PDF
Analytical Investigation of Resonant Frequency of a Microstrip Antenna with Meshed Ground Plane
Toru TAKAHASHI Isamu CHIBA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2000/05/25
Vol. E83-C  No. 5  pp. 755-758
Type of Manuscript:  Special Section LETTER (Special Issue on Recent Developments in Guided-Wave Problems)
Category: 
Keyword: 
microstrip antenna, resonant frequency, meshed ground plane, perturbational technique, 
 Summary | Full Text:PDF