Title :
Gaussian beam tracking through a curved interface: comparison with a method of moments
Author :
Lugara, D. ; Boag, A. ; Letrou, C.
Author_Institution :
Inst. Nat. des Telecommun., Evry, France
Abstract :
Propagation and refraction of Gaussian beams originating in the Gabor frame decomposition of source fields is studied with application to the analysis of dielectric lenses. Accuracy of asymptotic closed-form expressions used for Gaussian beam tracking (GBT) through dielectric interfaces is evaluated numerically. The numerical results obtained by GBT for a variety of configurations are compared with those computed by the multifilament current version of the method of moments. It is demonstrated that the GBT method is an attractive fast technique for design and optimisation of lens antennas and quasi-optical systems.
Keywords :
dielectric devices; electromagnetic fields; electromagnetic wave propagation; electromagnetic wave refraction; lens antennas; method of moments; optimisation; tracking; Gabor frame decomposition; Gaussian beam propagation; Gaussian beam refraction; Gaussian beam tracking; asymptotic closed-form expressions; curved interface; dielectric interfaces; dielectric lenses; electrically large radomes; lens antenna design; lens antenna optimisation; method of moments; multifilament current; quasi-optical system design; quasi-optical system optimisation; source fields;
Journal_Title :
Microwaves, Antennas and Propagation, IEE Proceedings
DOI :
10.1049/ip-map:20030434