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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

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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