World's Best Scientists 2026 revealed!
Tadao Ishibashi

Tadao Ishibashi

D-Index & Metrics

Electronics and Electrical Engineering

D-Index
45
Citations
9041
World Ranking
3515
National Ranking
126

Tadao Ishibashi publication distribution in Electronics and Electrical Engineering in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Electronics and Electrical Engineering in 2026. The highlighted bar marks where Tadao Ishibashi sits on this spectrum.

34–53 publications: 24 scientists 54–73 publications: 52 scientists 74–93 publications: 114 scientists 94–113 publications: 203 scientists 114–133 publications: 269 scientists 134–153 publications: 355 scientists 154–173 publications: 403 scientists 174–193 publications: 445 scientists 194–213 publications: 430 scientists 214–233 publications: 431 scientists 234–253 publications: 399 scientists 254–273 publications: 366 scientists 274–293 publications: 335 scientists 294–313 publications: 300 scientists 314–333 publications: 276 scientists 334–353 publications: 250 scientists 354–373 publications: 214 scientists 374–393 publications: 187 scientists 394–413 publications: 152 scientists 414–433 publications: 169 scientists 434–453 publications: 147 scientists 454–473 publications: 111 scientists 474–493 publications: 117 scientists 494–513 publications: 103 scientists 514–533 publications: 99 scientists 534–553 publications: 92 scientists 554–573 publications: 75 scientists 574–593 publications: 58 scientists 594–613 publications: 69 scientists 614–633 publications: 50 scientists 634–653 publications: 62 scientists 654–673 publications: 54 scientists 674–693 publications: 44 scientists 694–713 publications: 37 scientists 714–733 publications: 28 scientists 734–753 publications: 26 scientists 754–773 publications: 26 scientists 774–793 publications: 19 scientists 794–813 publications: 23 scientists 814–833 publications: 20 scientists 834–853 publications: 16 scientists 854–873 publications: 20 scientists 874–893 publications: 11 scientists 894–913 publications: 11 scientists 914–933 publications: 16 scientists 934–953 publications: 13 scientists 954–973 publications: 10 scientists 974–993 publications: 11 scientists 994–1,013 publications: 9 scientists 1,014–1,033 publications: 9 scientists 1,034–1,053 publications: 10 scientists 1,054–1,064 publications: 6 scientists 1,065+ publications: 99 scientists
34 publications 1,065+

This scientist: 328 publications — 63rd percentile

63% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 1,065 publications or more.

Tadao Ishibashi D-index placement in Electronics and Electrical Engineering in 2026

The chart shows the D-index (discipline H-index) distribution of Electronics and Electrical Engineering scientists ranked by Research.com in 2026. The highlighted bar marks where Tadao Ishibashi sits on this spectrum.

30 D-Index: 178 scientists 31 D-Index: 257 scientists 32 D-Index: 263 scientists 33 D-Index: 262 scientists 34 D-Index: 244 scientists 35 D-Index: 236 scientists 36 D-Index: 211 scientists 37 D-Index: 220 scientists 38 D-Index: 214 scientists 39 D-Index: 214 scientists 40 D-Index: 205 scientists 41 D-Index: 187 scientists 42 D-Index: 194 scientists 43 D-Index: 201 scientists 44 D-Index: 155 scientists 45 D-Index: 189 scientists 46 D-Index: 148 scientists 47 D-Index: 160 scientists 48 D-Index: 134 scientists 49 D-Index: 130 scientists 50 D-Index: 141 scientists 51 D-Index: 156 scientists 52 D-Index: 108 scientists 53 D-Index: 130 scientists 54 D-Index: 112 scientists 55 D-Index: 97 scientists 56 D-Index: 111 scientists 57 D-Index: 102 scientists 58 D-Index: 108 scientists 59 D-Index: 120 scientists 60 D-Index: 103 scientists 61 D-Index: 93 scientists 62 D-Index: 92 scientists 63 D-Index: 74 scientists 64 D-Index: 77 scientists 65 D-Index: 73 scientists 66 D-Index: 64 scientists 67 D-Index: 69 scientists 68 D-Index: 60 scientists 69 D-Index: 39 scientists 70 D-Index: 57 scientists 71 D-Index: 59 scientists 72 D-Index: 46 scientists 73 D-Index: 49 scientists 74 D-Index: 38 scientists 75 D-Index: 35 scientists 76 D-Index: 32 scientists 77 D-Index: 35 scientists 78 D-Index: 31 scientists 79 D-Index: 22 scientists 80 D-Index: 34 scientists 81 D-Index: 31 scientists 82 D-Index: 34 scientists 83 D-Index: 23 scientists 84 D-Index: 18 scientists 85 D-Index: 30 scientists 86 D-Index: 19 scientists 87 D-Index: 19 scientists 88 D-Index: 20 scientists 89 D-Index: 8 scientists 90 D-Index: 17 scientists 91 D-Index: 7 scientists 92 D-Index: 14 scientists 93 D-Index: 9 scientists 94 D-Index: 15 scientists 95 D-Index: 10 scientists 96 D-Index: 12 scientists 97 D-Index: 10 scientists 98 D-Index: 10 scientists 99 D-Index: 12 scientists 100 D-Index: 16 scientists 101 D-Index: 5 scientists 102 D-Index: 7 scientists 103 D-Index: 7 scientists 104 D-Index: 8 scientists 105 D-Index: 9 scientists 106 D-Index: 13 scientists 107 D-Index: 4 scientists 108 D-Index: 5 scientists 109 D-Index: 10 scientists 110 D-Index: 8 scientists 111+ D-Index: 96 scientists
30 D-Index 111+

This scientist: 45 D-Index — 50th percentile

50% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 111 D-Index or more.

Research.com Recognitions

  • 2005 - IEEE Fellow For contributions to high-speed and optoelectronic semiconductor devices.

Overview

Tadao Ishibashi is affiliated with NTT in Japan and has made scholarly contributions primarily in the fields of Engineering and Physics and Astronomy. Their research focuses on Electrical and Electronic Engineering as well as Atomic and Molecular Physics and Optics.

The main topics of Ishibashi's research include:

  • Photonic and Optical Devices
  • Terahertz technology and applications
  • Radio Frequency Integrated Circuit Design
  • Microwave Engineering and Waveguides
  • Advanced Photonic Communication Systems
  • Semiconductor Quantum Structures and Devices
  • Superconducting and THz Device Technology

Recent papers authored or co-authored by Tadao Ishibashi include:

  • Uni-traveling-carrier photodiodes, 2020, Journal of Applied Physics
  • Uni-Traveling Carrier Photodiodes: Development and Prospects, 2021, IEEE Journal of Selected Topics in Quantum Electronics

Frequent co-authors with whom Ishibashi has collaborated include:

  • Hiroshi Itô
  • Tadao Nagatsuma
  • Ming Che
  • Kazutoshi Kato
  • Yuma Kawamoto

Common venues where Ishibashi has published research papers are:

  • IEICE Electronics Express
  • Applied Physics Express
  • Electronics Letters
  • Journal of Applied Physics
  • IEEE Journal of Selected Topics in Quantum Electronics

Tadao Ishibashi was recognized as an IEEE Fellow in 2005 for contributions to high-speed and optoelectronic semiconductor devices.

Best Publications

  • Uni-traveling-carrier photodiodes

    T. Ishibashi;N. Shimizu;S. Kodama;H. Ito

  • High-speed and high-output InP-InGaAs unitraveling-carrier photodiodes

    H. Ito;S. Kodama;Y. Muramoto;T. Furuta

  • InP/InGaAs uni-travelling-carrier photodiode with 310 GHz bandwidth

    H. Ito;T. Furuta;S. Kodama;T. Ishibashi

  • Unitraveling-Carrier Photodiodes for Terahertz Applications

    Tadao Ishibashi;Yoshifumi Muramoto;Toshihide Yoshimatsu;Hiroshi Ito

  • InP/InGaAs Uni-Traveling-Carrier Photodiodes

    Tadao Ishibashi;Tomofumi Furuta;Hiroshi Fushimi;Satoshi Kodama

  • InP-InGaAs uni-traveling-carrier photodiode with improved 3-dB bandwidth of over 150 GHz

    N. Shimizu;N. Watanabe;T. Furuta;T. Ishibashi

  • Continuous THz-wave generation using antenna-integrated uni-travelling-carrier photodiodes

    Hiroshi Ito;Fumito Nakajima;Tomofumi Furuta;Tadao Ishibashi

  • High-power RF photodiodes and their applications

    Taduo Nagatsuma;Hiroshi Ito;Tadao Ishibashi

  • Photonic generation of continuous THz wave using uni-traveling-carrier photodiode

    H. Ito;T. Furuta;F. Nakajima;K. Yoshino

  • A possible near-ballistic collection in an AlGaAs/GaAs HBT with a modified collector structure

    Unknown

  • Fabrication and characterization of high-performance InP/InGaAs double-heterojunction bipolar transistors

    K. Kurishima;H. Nakajima;T. Kobayashi;Y. Matsuoka

  • Uni-traveling-carrier photodiodes

    Tadao Ishibashi;Hiroshi Ito

  • InP/InGaAs pin photodiode structure maximising bandwidth and efficiency

    Y. Muramoto;T. Ishibashi

  • High-power photonic millimetre wave generation at 100 GHz using matching-circuit-integrated uni-travelling-carrier photodiodes

    H. Ito;T. Nagatsuma;A. Hirata;T. Minotani

  • Photonic terahertz-wave generation using antenna-integrated uni-travelling-carrier photodiode

    H. Ito;F. Nakajima;T. Furuta;K. Yoshino

  • Photonic millimetre-and sub-millimetre-wave generation using J-band rectangular-waveguide-output uni-travelling-carrier photodiode module

    H. Ito;T. Furuta;Y. Muramoto;T. Ito

  • Emitter-Base Junction Size Effect on Current Gain Hfe of AlGaAs/GaAs Heterojunction Bipolar Transistors

    Osaake Nakajima;Koichi Nagata;Hiroshi Ito;Tadao Ishibashi

  • InP/InGaAs Fermi-level managed barrier diode for broadband and low-noise terahertz-wave detection

    Hiroshi Ito;Tadao Ishibashi

  • Rectangular waveguide output unitraveling-carrier photodiode module for high-power photonic millimeter-wave generation in the F-band

    H. Ito;T. Ito;Y. Muramoto;T. Furuta

  • 40 Gbit/s n-i-n InP Mach-Zehnder modulator with a voltage of 2.2 V

    K. Tsuzuki;T. Ishibashi;T. Ito;S. Oku

  • Self-aligned AlGaAs/GaAs HBT with low emitter resistance utilizing InGaAs cap layer

    Unknown

  • C.W. oscillation with p+-p-n+ silicon IMPATT diodes in 200 GHz and 300 GHz bands

    M. Ino;T. Ishibashi;M. Ohmori

  • Triple-mesa Avalanche Photodiode With Inverted P-Down Structure for Reliability and Stability

    Masahiro Nada;Yoshifumi Muramoto;Haruki Yokoyama;Tadao Ishibashi

Frequent Co-Authors

Tadao Nagatsuma
Tadao Nagatsuma Osaka University
Taiichi Otsuji
Taiichi Otsuji Tohoku University
Akihiko Hirata
Akihiko Hirata Chiba Institute of Technology
Toshiki Makimoto
Toshiki Makimoto Waseda University
Hiroshi Okamoto
Hiroshi Okamoto University of Tokyo
Hiromasa Ito
Hiromasa Ito RIKEN Center for Advanced Photonics
Sadao Adachi
Sadao Adachi Gunma University
Andreas D. Wieck
Andreas D. Wieck Ruhr University Bochum
Victor Ryzhii
Victor Ryzhii Tohoku University

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