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The Ohio State University

ElectroScience Laboratory

ElectroScience Laboratory at The Ohio State University
Department of Electrical and Computer Engineering ElectroScience Laboratory

Computational Electromagnetics

We do all in ESL: Integral Equations, Finite Methods and High Frequency Techniques.

 Computational EM at ESL

Integral Equations

  • Fast Methods such as Multilevel Fast Multipole Method (ML-FMM)
  • Adaptive Integral Method (AIM)
  • Hybrid high-frequency Iterative Physical Optics (IPO) techniques for large multi-bounce and cavity scattering problems.

Diverse range of applications including:

  • printed circuit antennas
  • analysis and design of extremely low-frequency shielding
  • cavity backed antennas
  • scattering from airborne targets
  • artificial media
  • radiation from antennas on platforms such as aircraft and automobiles
  • analysis of radomes designed for wide bandwidth and minimum distortion of the antenna radiation pattern.

Finite Methods

The ElectroScience Laboratory is well-known for its numerous breakthroughs in advanced finite element and finite difference techniques, such as:

  • mesh generation,
  • time-domain simulation,
  • phenomenology computation,
  • special applications,
  • parallelization,
  • preconditioning,
  • domain decomposition, and more..

Hybrid Methods 

Recent areas of research in high-frequency methods such as the Geometric Theory of Diffraction (GTD) and its Uniform extension (UTD) include the development of new diffraction coefficients which will permit the GTD to be applicable to a wider variety of perfectly conducting and material structures. The applications include:

  • radiation
  • scattering and coupling problems involving edges, vertices, and curved surfaces such as cylinders, ellipsoids, and spline patches.

Gaussian beams are being studied to replace the rays of conventional GTD in order to obtain more accurate and efficient solutions. In addition, time-domain GTD is being developed for its importance in such areas as short pulse radar and remote sensing.

Gaussian beam analysis/synthesis and hybrid UTD-Method of Moments techniques developed at the ESL have increased analysis speed and accuracy for:

  • complex reflector antennas,
  • realistic aircraft,
  • large embedded finite arrays, and
  • inlet and rough sea scattering.

Faculty/Researcher Contact:   Dr. Robert Burkholder, Prof. Jin-Fa Lee,
Prof. Robert Lee, Dr. Teh-Hong Lee, Dr. Ronald Marhefka, Dr. Frank Paynter,
Dr. Zhen Peng, Dr. Kubilay Sertel, Dr. Tatsuo Tanaka, Prof. Fernando Teixeira, Prof. John Volakis