Research Topics
Numerical electromagnetics
- MoM and Boundary Integral Method: formulations, planar circuits (reciprocal and non-reciprocal), eigenmode analysis, 3D MoM for free space and multilayered media.
- Finite-Element Method: eigenmode analysis, 2.5FEM in rectangular and cylindrical coordinates, 3D FEM.
- Mode-Matching: general theory (properties and mode selection criterion), rectangular, circular and coaxial waveguide discontinuities, rectangular waveguide to cylindrical cavity transition, curved waveguides.
- GAM: Generalized admittance matrix analysis of waveguide components.
- Spectral Methods: shielded transmission lines in multilayered dielectric, radiation by sources in multilayered dielectric in shielded and open structures (Sommerfeld formulation).
Devices and applications
- Coupled lines: general theory of N coupled quasi-TEM lines.
- De-embedding: automatic error correction in the measurements of S-parameters for two-ports circuits and four-ports circuits.
- Waveguide filters: overmoded cavity filters, direct-coupled filters, dielectric resonators filters, combline filters.
- Microstrip/Suspended stripline devices: interdigital filters, Lange couplers.
- OMT: analysis and design of ortho-mode transducers. Software for the efficient analysis and design of Boifot-junction OMT based on 2.5D FEM.
- Waveguide bends: analysis and design of arbitrary bends in standard and overmoded rectangular and circular waveguide.
- Patch antennas: antennas residing in a cavity in single and stacked configuration and arbitrary shape. Arrays.
- Horns and horns clusters, coupling with reflector.
- Overmoded waveguide transmission: low-loss transmission for source-antenna links in overmoded waveguide.
- GPR: ground penetrating radar. Analysis and description of interactions. Forward modeling and inversion.
- CSEM: low frequency electromagnetics for reservoir detection. Development of 2.5D FEM and 3D FEM code for forward modeling.
- Electromagnetic characterization of complex media. Waveguide calibration and measurements.
- Horn antennas: circular and coaxial corrugated horns. Dielectric horns. Software package for rotationally symmetric horn with arbitrary media. Analysis of coupling between horns in a horn cluster. Analysis of coupling of horns with reflector.
- Antenna arrays for mobile communications.
- Reconfigurable antennas for WiFi and sensing.
- THz radiation and nanoantennas for sensing and imaging.