Research papers

The Higher-Order Array Decomposition Method (HO-ADM) is extended to handle fully populated or thinned finite array antennas and scatterers which can be modeled as arrays with connected elements lying on a regular lattice. The Discontinuous Galerkin Method (DGM) is employed…

The Higher-Order Array Decomposition Method (HO-ADM) has been extended to regular arrays with dielectric substrates. To maintain the multi-level block-Toeplitz Method of Moments (MoM) matrix structure, internal equivalent currents are introduced, ensuring an FFT-accelerated matrix vector product (MVP). Results demonstrate…

This work presents the design and manufacturing of a low-profile coaxial-to-dual ridge waveguide adapter operating in the X band from 8.025 GHz to 8.4 GHz. The adapter will connect the feed of the antenna system to the RF front-end. The…

This paper presents a fast direct solver for the Combined Field Integral Equation using higher-order discretizations. By adopting higher-order polynomials with the Method of Moments, the number of unknowns is significantly reduced. The fast direct solver leverages the efficiency of…

This paper presents the direct optimization of active and passive reconfigurable quasi-periodic structures for beam steering. Two configurations are considered, an active reconfigurable reflectarray working between 24.5-27.5 GHz for 5G application, and a passive mechanical steered low profile transmitarray working…