RESEARCH EXPERIENCE
The University of Mississippi, Department of Electrical Engineering

• 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.

North Carolina State University, Electrical & Computer Engineering Department

• Electromagnetic field analysis of high-frequency interconnections for spatial power combining systems, MAFET Thrust III program, DARPA; Fortran codes.
• Electromagnetic field analysis of waveguide-based arbitrarily shaped interactive electric and magnetic layers: patch-to-slot, strip-to-slot transition modules and arrays for power combining structures; integral equation methods, method of moments.
• Integration of passive circuit elements and active (MMIC) devices in high-frequency antenna arrays using field-circuit modeling techniques.
• Modeling of slotted waveguides coupled to strip and microstrip lines with application to spatial power combining; electric and magnetic field integral equations, method of moments, Fortran codes.
• Generalized Scattering Matrix method for modeling coupled patch and slot antennas in layered waveguide.
• Acceleration techniques for computing slowly converging integrals and series.
• Microwave measurements using a HP8510C Network Analyzer.

University of Wisconsin-Milwaukee, Electrical Engineering &Computer Science Department

• Leaky-mode analysis of transient fields in layered media due to electric and magnetic sources (this analysis is used in geophysics for evaluation of the response of a layered elastic medium and oceanic wave guide to an explosive point source).
• Asymptotic evaluation of radiation integrals using the steepest descent method.
• Mode interaction mechanisms on open guided-wave structures in connection with bifurcation and catastrophe theories.
• Mode leakage and coupling on high-frequency integrated circuits in connection with the theory of universal unfoldings.
• Complex branch points in connection with the mode classification.

Ansoft Corporation, Pittsburgh, PA, Ansoft Corporation/Compact Software Division, Paterson, NJ

• Passive device modeling and research for electromagnetic kernel in MAFET Project; numerical work using Explorer, Maxwell Strata CAD modeling tools.
• Full-wave electromagnetic formulation for arbitrarily shaped 3D open planar and vertical interconnections; mixed-potential integral equation method, method of moments.

Research for Ph.D., University of Wisconsin

• Electromagnetic modeling of printed-circuit transmission lines; spectral-domain approach, method of moments.
• Mode leakage and coupling phenomena on layered open integrated waveguides in connection with bifurcation and catastrophe theories; Fortran codes.
• Control and suppression of leakage on printed transmission line circuits.
• Scattering matrix parameters of microstrip resonators, bends, and junctions; method of moments; Fortran codes.
• Excess capacitance of the finite ground strip-to-strip transition; boundary element method.

Research for Candidate of Science dissertation, Dniepropetrovsk State University and Institute of Radiophysics and Electronics, Ukraine

• Full-wave analysis of shielded microstrip transmission lines with finite thickness strip conductors; method of overlapping regions, Galerkin method; Fortran, PL-1 codes.
• Analysis of wave interactions in shielded microstrip lines.
• Analytical and numerical simulation of microstrip junctions: T-, periscopic, and right-angle bends; method of overlapping regions, Galerkin method; Fortran, Basic codes.
• Mathematical and computer simulation of antenna arrays.

Research for M.S.E.E., Dniepropetrovsk State University, Ukraine

• Calculation of propagation characteristics of a rectangular waveguide loaded with a ferrite section.
• Analysis of controlled circular polarizers.