Lens or resonator? Electromagnetic behavior of an extended hemielliptic lens for a sub-millimeter-wave receiver
Date
2004Source Title
Microwave and Optical Technology Letters
Print ISSN
0895-2477
Electronic ISSN
1098-2760
Publisher
John Wiley & Sons
Volume
43
Issue
6
Pages
515 - 518
Language
English
Type
ArticleItem Usage Stats
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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.
Keywords
Boundary integral equationsDielectric lens
Focusability
Algorithms
Computer simulation
Dielectric amplifiers
Electromagnetic waves
Error analysis
Fourier transforms
Geometrical optics
Green's function
Integral equations
Mathematical models