117 citations · 407 across the 17 of their papers we have counts for
17 papers
Wigner-Smith Time Delay Matrix for Electromagnetics: Guiding and Periodic Systems with Evanescent Modes
Yiqian Mao, Utkarsh R. Patel, Eric Michielssen
The Wigner-Smith (WS) time delay matrix relates an electromagnetic system's scattering matrix and its frequency derivative. Previous work showed that the entries of WS time delay m…
Wigner-Smith Time Delay Matrix for Electromagnetics: Systems with Material Dispersion and Losses
Yiqian Mao, Utkarsh R. Patel, Eric Michielssen
The Wigner-Smith (WS) time delay matrix relates a system's scattering matrix to its frequency derivative and gives rise to so-called WS modes that experience well-defined group del…
Wigner-Smith Time Delay Matrix for Acoustic Scattering: Computational Aspects
Utkarsh R. Patel, Yiqian Mao, Jack Hamel +1
The Wigner-Smith (WS) time delay matrix relates an acoustic system's scattering matrix to its wavenumber derivative. The entries of the WS time delay matrix can be expressed in ter…
Wigner-Smith Time Delay Matrix for Acoustic Scattering: Theory and Phenomenology
Utkarsh R. Patel, Yiqian Mao, Eric Michielssen
The Wigner-Smith (WS) time delay matrix relates a lossless system's scattering matrix to its frequency derivative. First proposed in the realm of quantum mechanics to characterize…
The Design of Dual Band Stacked Metasurfaces Using Integral Equations
Jordan Budhu, Eric Michielssen, Anthony Grbic
An integral equation-based approach for the design of dual band stacked metasurfaces which are invariant in one-dimension is presented. The stacked metasurface will generate collim…
Wigner-Smith Time Delay Matrix for Electromagnetics: Computational Aspects for Radiation and Scattering Analysis
Utkarsh R. Patel, Eric Michielssen
The WS time delay matrix relates a lossless and reciprocal system's scattering matrix to its frequency derivative, and enables the synthesis of modes that experience well-defined g…