Zobrazeno 1 - 10
of 146
pro vyhledávání: '"Raphael Kastner"'
Autor:
Roee Geva, Raphael Kastner
Publikováno v:
2022 3rd URSI Atlantic and Asia Pacific Radio Science Meeting (AT-AP-RASC).
Autor:
Raphael Kastner
Publikováno v:
IEEE Transactions on Antennas and Propagation. 68:3747-3750
Duality between electric and magnetic fields and parameters has long been recognized as a useful shortcut for inferring solutions to certain problems from their known duals. In this article, we suggest the use of “half-way dual” fields for extend
Autor:
Raphael Kastner
Publikováno v:
2021 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting (APS/URSI).
Self-Duality: From Symmetry Protected Transmission to Extreme Wave Funneling and Zero Backscattering
Publikováno v:
2021 Fifteenth International Congress on Artificial Materials for Novel Wave Phenomena (Metamaterials).
Structural and material symmetries can be engineered to create unique electromagnetic effects including backscattering-immune propagation. In this work we investigate the scattering properties of a class of structures with combined rotational and dua
Autor:
Raphael Kastner
Publikováno v:
2021 International Conference on Electromagnetics in Advanced Applications (ICEAA).
The set of six scalar Maxwell's time domain equations are consolidated in this work into two 3X3 decoupled complex sets (5) . Each one of the two sets describes one (of two) newly defined vector fields, denoted E L and E R , respectively. Only one of
Publikováno v:
2021 International Conference on Electromagnetics in Advanced Applications (ICEAA).
Self-dual structures, ones that remain unchanged under interchanging electric and magnetic portions of the structure where e r = μ r , except for a 90° rotation around their axis, have been shown [1] to produce perfect zero backscattering to an arb
Autor:
Raphael Kastner
Publikováno v:
2020 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting.
The six scalar components of the Maxwell's real time domain equations are reduced in this work into two decoupled sets of 3 × 3 complex equations. Each set consolidated the entire information into three new complex field constituents. Contrary to th
Balanced Electric-Magnetic Absorber Green’s Function Method for MoM Matrix Thinning and Conditioning
Publikováno v:
IEEE Transactions on Antennas and Propagation. 66:2996-3001
A balanced (Weston-type) absorber, characterized by both electric and magnetic loss mechanisms, can be placed within the null field inside the equivalent surface currents replacing a perfectly conducting or homogeneous scatterer. The absorber, referr
Publikováno v:
Photonics Research. 9:1842
We study the problem of a temporal discontinuity in the permittivity of an unbounded medium with Lorentzian dispersion. More specifically, we tackle the situation in which a monochromatic plane wave forward-traveling in a (generally lossy) Lorentzian
Autor:
Raphael Kastner, Hamid Shannan
Publikováno v:
IEEE Transactions on Antennas and Propagation. 65:2421-2427
Incident power upon a slender scatterer or a receiving antenna is not well defined, since physical apertures of such structures have little meaning. However, an area over which the incident power is admitted can nonetheless be defined. For a definiti