Title :
Exact near-fields of the dielectric lenses for sub-mm wave receivers
Author :
Boriskin, A.V. ; Boriskina, S.V. ; Nosich, A.I.
Author_Institution :
Dept. of Computational Electromagn., Nat. Acad. of Sci., Kharkov, Ukraine
Abstract :
The focusing properties of a truncated elliptic dielectric cylinder with a piece-wise "super-elliptic" cross section taken as a 2D model of a dielectric lens are studied for plane wave illumination. The Muller integral-equation (IE) technique is used for the analysis of the scattering problem. This full-wave mathematically rigorous method guarantees uniqueness of the numerical solution for an arbitrary set of design and material parameters. To treat the singularities in the Green\´s functions and their derivatives in the discretization scheme, we use analytical inversion of the canonical circular-cylinder counterpart of the problem. This procedure enables us to build a very efficient tool for CAD and optimization of dielectric lenses. Numerical results for the near fields are presented and lens-focusing properties are studied for the E-polarization case.
Keywords :
Green´s function methods; dielectric devices; electromagnetic wave polarisation; electromagnetic wave scattering; focusing; geometrical optics; lenses; submillimetre wave receivers; E-polarization; Green´s function singularities; Muller integral equation technique; dielectric lens near-fields; geometrical optics; lens focusing properties; piece-wise super-elliptic cross section; plane wave illumination; plane wave scattering; ray-tracing; sub-mm wave receivers; truncated elliptic dielectric cylinder; Computational electromagnetics; Dielectric constant; Electromagnetic modeling; Electromagnetic scattering; Geometrical optics; Integral equations; Lenses; Lighting; Physics; Receivers;
Conference_Titel :
Microwave Conference, 2003. 33rd European
Print_ISBN :
1-58053-834-7
DOI :
10.1109/EUMC.2003.1262219
