Title :
A Class of Focusing Waves With Controllable Spatial Extension and Directivity
Author :
Meton, Philippe ; Cozza, Andrea ; Monsef, Florian
Author_Institution :
DAM, CEA, Gramat, France
Abstract :
Slepian´s concentration operator is applied in order to define a set of focusing waves with finite angular spread and the highest spatial focusing possible. These waves can be used as building blocks for the definition of any wave that requires to ensure both angular and spatial resolution, as an optimal tradeoff within the bounds imposed by the uncertainty principle. Applications of these results can be expected in the form of focusing waves yielding higher energy efficiency for antenna characterization, electromagnetic compatibility (EMC) radiative-immunity tests, electronic warfare, as well as spatially resolved beamforming.
Keywords :
approximation theory; electromagnetic wave propagation; focusing; method of moments; EMC; Slepian concentration operator; antenna characterization; controllable spatial directivity; controllable spatial extension; electromagnetic compatibility; electronic warfare; energy efficiency; finite angular spread; focusing waves; method-of-moment approximation; radiative-immunity tests; spatial resolution; spatially resolved beamforming; uncertainty principle; Approximation methods; Distribution functions; Focusing; Graphical models; Niobium; Spatial resolution; Wave functions; Focusing waves; Slepian functions; plane-wave spectrum;
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2014.2348935
