Center for Applied Electromagnetic Systems Research

Research Interests

  • Mantle cloaking of cylindrical objects with conformal printed and slotted metasurfaces: analytical approach.
  • Enhanced transmission with graphene-dielectric microstructure at low-terahertz.
  • Enhanced transmission with stacked 2-D distributions of conducting patches.
  • Homogenization models for mushroom-type high-impedance surfaces with loaded vias.
  • Excitation of discrete and continuous spectrum with the surface conductivity model of graphene.
  • Analysis of all angle negative refraction in wire media with deeply-subwavelength inclusions.
  • Near-field enhancement with mushroom-type structures with impedance loadings.
  • Generalized additional boundary conditions for mushroom-type and bed-of-nails-type wire media with application to wideband absorbers.
  • Homogenization models for multilayer mushroom structures for the analysis of negative refraction with application to partial focusing lens.
  • Analysis of total transmission in sub-wavelength multilayer partially-reflecting surfaces: analytical and circuit theory models.
  • Analytical modeling of high-impedance surfaces with graphene patches as absorbing structures at microwaves.
  • Plane-wave and surface-wave analytical modeling of printed high-impedance surfaces.
  • Plane-wave and surface-wave analytical modeling of EBG structures and metamaterials, including mushroom-like surfaces, wire media slabs, and slabs with spherical inclusions.
  • Modal interaction in homogenized metamaterials structures.
  • Green’s function analysis of high-impedance surfaces and homogenized metamaterials.
  • Spectral analysis of metamaterial structures. Fundamental modal properties on metamaterial slab waveguides.
  • Spectral analysis of Frequency Selective Surfaces with application to hard and soft surfaces and electromagnetic bandgap structures.
  • Electromagnetic modeling of circular and rectangular hard surface waveguides: dyadic Green’s function approach.
  • Excitation and scattering in PEC circular waveguides and hard surface waveguides.
  • Electromagnetic modeling of 3D high-frequency interconnection structures; full-wave analysis of waveguide-based aperture-coupled patch amplifier arrays and dielectric resonator arrays; Generalized Scattering Matrix of patch, slot, and DRA arrays in layered overmoded waveguides; integral equation methods, method of moments: spatial and quasi-optical power combining applications.
  • Global modeling of spatial power combining amplifiers, including full-wave modeling of passive devices, field-circuit interaction of electromagnetic structures and amplifier circuits, simulation of coupling effects.
  • Electric and magnetic dyadic Green’s functions for layered open and closed guided-wave structures.
  • Full-wave analysis of open and closed guided-wave structures; spectral-domain approach, method of moments.
  • Modeling of microstrip and waveguide discontinuities: directional couplers, filters, resonant systems, multiport junctions.
  • Mode leakage and coupling on integrated transmission line circuits; control and suppression of radiation effects.
  • Coupled-mode theory and its connection with catastrophe and bifurcation theories.
  • Leaky-mode analysis of transient fields in layered media due to electric and magnetic line and dipole sources.