World's Best Scientists 2026 revealed!

D-Index & Metrics

Electronics and Electrical Engineering

D-Index
44
Citations
9239
World Ranking
3687
National Ranking
141

Research.com Recognitions

  • 2012 - IEEE Fellow For contributions to high-gain and high-efficiency millimeter-wave planar waveguide slot arrays

Overview

Jiro Hirokawa is affiliated with the Tokyo Institute of Technology in Japan and has made numerous contributions in the field of Engineering, focusing primarily on Aerospace Engineering and Electrical and Electronic Engineering. Their research extends into specialized subfields such as Electronic, Optical and Magnetic Materials, Atomic and Molecular Physics and Optics, as well as Biomedical Engineering.

The scientist's work concentrates on topics including Microwave Engineering and Waveguides, Antenna Design and Analysis, and Advanced Antenna and Metasurface Technologies. Additional areas of research encompass Antenna Design and Optimization, Millimeter-Wave Propagation and Modeling, Metamaterials and Metasurfaces Applications, and Energy Harvesting in Wireless Networks.

Jiro Hirokawa has published extensively in leading academic venues. Frequent publication venues include:

  • IEEE Transactions on Antennas and Propagation
  • IEEE Access
  • IEEE Antennas and Propagation Magazine
  • IEEE Antennas and Wireless Propagation Letters
  • IEICE Communications Express

Key recent papers authored or co-authored by Jiro Hirokawa include:

  • A 38 dB Gain, Low-Loss, Flat Array Antenna for 320-400 GHz Enabled by Silicon-on-Insulator Micromachining, 2020, IEEE Transactions on Antennas and Propagation
  • Millimeter-Wave Huygens' Transmit Arrays Based on Coupled Metallic Resonators, 2020, IEEE Transactions on Antennas and Propagation
  • Simultaneous Generation of Three OAM Modes by Using a RLSA Fed by a Waveguide Circuit for 60 GHz-band Radiative Near-field Region OAM Multiplexing, 2020, IEEE Transactions on Antennas and Propagation
  • Laser-Drilled All-Dielectric Huygens' Transmit-Arrays as 120 GHz Band Beamformers, 2020, IEEE Access
  • Development and Performance Evaluation of Small SAR System for 100-kg Class Satellite, 2020, IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing

Frequently collaborating with fellow researchers, Jiro Hirokawa's notable co-authors include:

  • Takashi Tomura
  • Ashwin K. Iyer
  • Claire Migliaccio
  • Félix Vega
  • Oscar Quevedo-Teruel

Awarded the title of IEEE Fellow in 2012, Jiro Hirokawa received recognition for contributions to high-gain and high-efficiency millimeter-wave planar waveguide slot arrays.

Best Publications

  • Single-layer feed waveguide consisting of posts for plane TEM wave excitation in parallel plates

    J. Hirokawa;M. Ando

  • Double-Layer Full-Corporate-Feed Hollow-Waveguide Slot Array Antenna in the 60-GHz Band

    Y. Miura;J. Hirokawa;M. Ando;Y. Shibuya

  • Photonic architecture for beam forming of RF phased array antenna

    Shigeyuki Akiba;Masayuki Oishi;Yoshihiro Nishikawa;Kyo Minoguchi

  • Dual-band-rejection filter for distortion reduction in RF transmitters

    H. Uchida;H. Kamino;K. Totani;N. Yoneda

  • Millimeter-Wave Multibeam Endfire Dual-Circularly Polarized Antenna Array for 5G Wireless Applications

    Qi Wu;Jiro Hirokawa;Jiexi Yin;Chen Yu

  • Efficiency of 76-GHz post-wall waveguide-fed parallel-plate slot arrays

    J. Hirokawa;M. Ando

  • A slotted post-wall waveguide array with interdigital structure for 45/spl deg/ linear and dual polarization

    Sehyun Park;Y. Okajima;J. Hirokawa;M. Ando

  • An analysis of a waveguide T junction with an inductive post

    J. Hirokawa;K. Sakurai;M. Ando;N. Goto

  • Center feed single layer slotted waveguide array

    Sehyun Park;Y. Tsunemitsu;J. Hirokawa;M. Ando

  • Dual-Layer Ridged Waveguide Slot Array Fed by a Butler Matrix With Sidelobe Control in the 60-GHz Band

    Karim Tekkouk;Jiro Hirokawa;Ronan Sauleau;Mauro Ettorre

  • ARRAY ANTENNA AND DEVICE EMPLOYING SAME

    Junji Sato;Jiro Hirokawa;Ryosuke Shiozaki;Miao Zhang

  • Design and Fabrication of a Dual-Polarization Waveguide Slot Array Antenna With High Isolation and High Antenna Efficiency for the 60 GHz Band

    Dongjin Kim;Miao Zhang;Jiro Hirokawa;Makoto Ando

  • Waveguide-fed parallel plate slot array antenna

    J. Hirokawa;M. Ando;N. Goto

  • Alternating phase-fed waveguide slot arrays with a single-layer multiple-way power divider

    K. Sakakibara;Y. Kimura;A. Akiyama;J. Hirokawa

  • Cavity-backed wide slot antenna

    J. Hirokawa;H. Arai;N. Goto

  • A 45 $^\circ$ Linearly Polarized Hollow-Waveguide Corporate-Feed Slot Array Antenna in the 60-GHz Band

    T. Tomura;Y. Miura;Miao Zhang;J. Hirokawa

  • A single-layer slotted leaky waveguide array antenna for mobile reception of direct broadcast from satellite

    J. Hirokawa;M. Ando;N. Goto;N. Takahashi

  • Cost-Effective 60-GHz Antenna Package With End-Fire Radiation for Wireless File-Transfer System

    Ryosuke Suga;Hiroshi Nakano;Yasutake Hirachi;Jiro Hirokawa

  • 64 $\, imes\,$ 64-Element and 32 $\, imes\,$ 32-Element Slot Array Antennas Using Double-Layer Hollow-Waveguide Corporate-Feed in the 120 GHz Band

    Dongjin Kim;Jiro Hirokawa;Makoto Ando;Jun Takeuchi

  • A 45 $^{\circ}$ Linearly Polarized Hollow-Waveguide 16 $\, imes$ 16-Slot Array Antenna Covering 71–86 GHz Band

    Takashi Tomura;Jiro Hirokawa;Takuichi Hirano;Makoto Ando

  • Analysis of slot coupling in a radial line slot antenna for DBS reception

    J. Hirokawa;M. Ando;N. Goto

Frequent Co-Authors

Makoto Ando
Makoto Ando Keio University
Akihiko Hirata
Akihiko Hirata Chiba Institute of Technology
Kenichi Okada
Kenichi Okada Tokyo Institute of Technology
Tadao Nagatsuma
Tadao Nagatsuma Osaka University
Qing Huo Liu
Qing Huo Liu Eastern Institute of Technology, Ningbo
Ronan Sauleau
Ronan Sauleau University of Rennes
Per-Simon Kildal
Per-Simon Kildal Chalmers University of Technology
Wei Hong
Wei Hong Southeast University
Nelson J. G. Fonseca
Nelson J. G. Fonseca European Space Agency

If you think any of the details on this page are incorrect, let us know.

Report an issue

We appreciate your kind effort to assist us to improve this page, it would be helpful providing us with as much detail as possible in the text box below:

Related Online Degrees & Career Pathways

For those interested in Electronics and Electrical Engineering, exploring related online degrees can broaden career opportunities. Many students benefit from accelerated online bachelor degree programs accredited, which offer flexible schedules and a faster path to graduation—ideal for working professionals seeking to upskill.

Additionally, professionals aiming to transition into education or training roles may consider a master's in training and development online. This degree complements technical expertise with instructional design skills, opening doors to corporate training or educational technology careers.

Competency-based learning has also reshaped how engineering credentials are earned. Programs emphasizing competency based programs allow students to progress upon mastery of skills rather than time, enhancing personalized education and often reducing overall costs.

Moreover, many online options cater specifically to diverse populations, such as military families. The recognition of best online college for military spouses helps these students access supportive resources and flexible study plans, ensuring education is accessible regardless of lifestyle.

Best Scientists Citing Jiro Hirokawa

Trending Scientists

Recently Published Articles