Fast Analysis of Terahertz Integrated Lens Antennas Employing the Spectral Domain Ray Tracing Method

We present a computationally efficient spectral ray tracing (SRT) method that requires one spectral domain integration step for each observation point. We compare the SRT method with the finite element method (FEM) and geometrical optics (GO) via simulation of terahertz Gaussian beam propagation thr...

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Veröffentlicht in:	IEEE antennas and wireless propagation letters 2009, Vol.8, p.37-39
Hauptverfasser:	Hailu, D.M., Ehtezazi, I.A., Safavi-Naeini, S.
Format:	Artikel
Sprache:	eng
Schlagworte:	Antennas Antennas and propagation Computation Computational efficiency Computational modeling Computer simulation Concurrent computing electromagnetic radiation Finite element method finite element method (FEM) Finite element methods Gaussian beams (optics) Geometrical optics geometrical optics (GO) hemispherical lens lens antennas Lenses Mathematical models Optical propagation Ray tracing Solid modeling Spectra spectral ray tracing (SRT) Submillimeter wave propagation terahertz radiation
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Beschreibung
Zusammenfassung:	We present a computationally efficient spectral ray tracing (SRT) method that requires one spectral domain integration step for each observation point. We compare the SRT method with the finite element method (FEM) and geometrical optics (GO) via simulation of terahertz Gaussian beam propagation through a hemispherical lens. The SRT was able to accurately solve the problem 30 times faster than FEM. The matrix formulation of SRT is promising for solving complex electrically large problems with high accuracy and 2 orders of magnitude reduction in computation time through parallel processing.
ISSN:	1536-1225 1548-5757
DOI:	10.1109/LAWP.2008.2010878