Lens or resonator? Electromagnetic behavior of an extended hemielliptic lens for a sub-millimeter-wave receiver

Date

2004

Authors

Boriskin, A. V.
Nosich, A. I.
Boriskina, S. V.
Benson, T. M.
Sewell, P.
Altintas, A.

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Abstract

The behavior of a 2D model of an extended hemielliptic silicon lens of a size typical for THz applications is accurately studied for the case of a plane E-wave illumination. The full-wave analysis of the scattering problem is based on the Mutter's boundary integral-equations (MB1E) that are uniquely solvable. A Calerkin discretization scheme with a trigonometric basis leads tu a very efficient numerical algorithm. The numerical results related to the focusability of the lens versus its rear-side extension and the angle of the plane-wave incidence, as well as near-field profiles, demonstrate strong resonances. Such effects can change the principles of optimal design of lens-based receivers.

Source Title

Microwave and Optical Technology Letters

Publisher

John Wiley & Sons

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Keywords

Boundary integral equations, Dielectric lens, Focusability, Algorithms, Computer simulation, Dielectric amplifiers, Electromagnetic waves, Error analysis, Fourier transforms, Geometrical optics, Green's function, Integral equations, Mathematical models

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Published Version (Please cite this version)

Language

English

Type

Article