Research Areas

Our group has worked in many diverse areas within electromagnetics, antennas, and microwave engineering. Below are listed some brief descriptions of areas in which we made pioneering contributions. We also have presented exciting and comprehensive presentations at many IEEE sponsored conferences including the International Symposium on Antennas and Propagation and International Microwave Symposium (IMS). Below is a video presentation by Prof. Rahmat-Samii at a recent IMS conference highlighting our work in the areas of electromagnetics.

Antennas for Wireless Communications

  • Patch antennas
  • Low-profile antennas for implantable medical devices inside a human body
  • Impulse radiated antennas (IRA)
  • MIMO antennas

Satellite and Ground Antennas

  • Characterization of effects of periodic and aperiodic distortions on membrane reflector antennas
  • Non-uniform Luneburg and 2-shell lens antennas
  • Reflector surface distortion compensation using focal plane adaptive array feeds
  • Stacked patch microstrip array antennas for remote sensing applications

Antenna Measurement Techniques

  • Analysis and development of antennas for compact range applications
  • Spherical near-field measurement technique
  • Near-field technique for antenna measurement and characterization
  • Bi-polar planar near-field antenna measurement technique

Numerical and Optimization Techniques

  • Comprehensive diffraction synthesis and PO/PTD/GTD analysis techniques for multi reflector shaped antennas
  • Characterizations of dyadic Green's functions singularities
  • Genetic algorithm (GA) optimization
  • Electromagnetic modeling of periodic structures including frequency selective surfaces (FSS) and mesh configurations

Periodic and Electromagnetic Band Gap Structures

  • Fractal FSS's
  • Enhanced performance patch antennas on high permittivity substrate using EBG
  • Mutual coupling reduction of microstrip antennas with EBG
  • Low-profile circularly polarized curl antennas using EBG