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

  • Impulse radiated antennas (IRA)
  • Ultra wide band (UWB) antennas
  • Antennas for Cognitive and Software-Defined Radios
  • Patch antennas

Satellite and Ground Antennas

  • Ultra scanning geostationary radar antennas
  • Optimization and design of corrugated horns
  • Reflector surface distortion compensation using focal plane adaptive array feeds
  • Characterization of effects of periodic and aperiodic distortions on membrane reflector antennas

Antenna Measurement Techniques

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

Numerical and Optimization Techniques

  • Comprehensive diffraction synthesis and PO/PTD/GTD analysis techniques for multi reflector shaped antennas
  • Analysis of radiation and scattering characteristics of antennas mounted on large structures
  • RCS reduction of canonical targets
  • Characterizations of dyadic Green's functions singularities

Periodic and Electromagnetic Band Gap Structures

  • Low-profile circularly polarized curl antennas using EBG
  • Fractal FSS's
  • Enhanced performance patch antennas on high permittivity substrate using EBG
  • Broadband characterization of complex periodic/EBG MEMS enabled FSS