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Research Overview

Keywords: electromagnetic wave, sound, simulation, signal processing

Electromagnetic Simulation Technology

  1. Simulation algorithm: method of moments (MoM), finite difference time domain (FDTD), finite element method (FEM)
  2. Modeling techniques for excitatin or feed structure such as on-wafer RF pads (GSG probe), SMA connector and so on.
  3. Modeling techniques for high frequency components.
  4. De-embedding techniques.
  5. Simulation technique of high frequency devices.

Antennas and RF Components

  1. Antenna design in microwave and millimeter-wave bands.
  2. Design and analysis of transmission lines such as microstrip lines.
  3. Design of transformers.
Chips for 60 GHz Millimeter Waves
 60 GHz CMOS On-Chip Antenna
Pentagonal Patch Monopole Antenna
for Breast Cancer Dtection (1-Layer)
 Pentagonal Patch Dipole Antenna
for Breast Cancer Dtection (2-Layers)
Millimeter-Wave and Terahertz-Wave Antennas
iLeft: 60GHz, CMOS, Right: 300GHz, Dielectric Subst.j
 300GHz Printed Yagi-Uda Type Antenna


R & D on wireless communication technology to realize Beyond 5G ultra-high-speed and high-capacity wireless communication using the Terahertz band Recorded on September 30, 2024 (00301, T. Hirano, Tokyo City University)

Array Antennas and Signal Processing

  1. Antenna arrays.
  2. Array signal procssing.
  3. Application to breast cancer detection.
Circular Arrays
 Eigenmode Excitation (MIMO) = OAM (Orbital Angular Momentum)

Sound Analysis: Tone Color

  1. Sound analysis on tone color.
  2. Confortable tone color caused by fluctuation.
  3. Try to reveal the question "What fluctuation will create rich sound?".

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