Ehud Heyman

TL;DR: Wave propagation in a double negative (DNG) medium, i.e., a medium having negative permittivity and negative permeability, is studied both analytically and numerically and the DNG slab solution is used to critically examine the perfect lens concept suggested recently by Pendry.

TL;DR: In this paper, a theory for a complete far-field transmit-receive system characterization of short-pulse antennas is derived in the time domain, which is characterized by a set of cascaded operators which transform the source waveform and power into similar quantities at the receiving antenna terminals.

TL;DR: This work uses a (space-time)-(wavenumber-frequency) phase-space format to discuss the exact complex-source-point method and the associated asymptotic beam tracking by means of complex rays, the TD pulsed-beam (PB) ultrawideband wave-packet counterpart of the FD GB, and as basis functions for representing arbitrary fields.

TL;DR: In this paper, the authors considered the problem of converting the conventional causal impulsive-source Green's-function propagator into a noncausal propagator, which must be defined as an analytic signal because, owing to causality, the analytic continuation into the complex domain cannot be performed by direct substitution.

TL;DR: The asymptotically exact analysis utilizes the method of uniform geometrical optics (UGO), and it is shown that the beam along the curved propagation trajectory is not generated by contributions from the main lobe in the aperture, i.e., it is not described by a local wave-dynamics along this trajectory.