5 papers
System response analysis in wavenumber domain for linear space-invariant time-varying problems
Wending Mai, Jingwei Xu, Arkaprovo Das +1
Being a powerful tool for linear time-invariant (LTI) systems, system response analysis can also be applied to the so-called linear space-invariant (LSI) but time-varying systems,…
Contact tracing Inspired Efficient Computation by Energy Tracing
Wending Mai, Ronald P. Jenkins, Yifan Chen +1
Inspired by the epidemic contact tracing technique, we propose a method to efficiently solve electromagnetics by tracing the energy distribution. The computational domain is adapti…
Chiral Ball and Its Omnidirectional Circularly-Polarized Radiation
Wending Mai, Chunxu Mao, Galestan Mackertich-Sengerdy +2
Chiral structures have reported radiation of circular polarized electromagnetic waves (CPs) in a specific direction. Here we report a class of torus knot radiators that is not only…
Dynamical electric dipole theory for quantitatively describing coupled split-ring resonators
Yong Zeng, Douglas H. Werner
Metallic split-ring resonators possess dominant electric dipoles as well as considerable magnetic dipoles under proper excitations. Full-wave numerical approaches are frequently em…
A lossless metamaterial with tunable permittivity and its application as a compact phase shifter
Yong Zeng, Qi Wu, Douglas H. Werner
In this Letter, we propose a new type of lossless metamaterial whose effective permittivity is tunable from negative to positive values. Its optical response is studied analyticall…