Experimental and numerical investigation of diffraction anomalies observed in FSS applications

Marcin K. Sarnowski; Thomas Vaupel; Volkert W. Hansen; Ernst Kreysa; Hans-Peter Gemuend; Vera A. Soglasnova

doi:10.1117/12.395407

16 August 2000 Experimental and numerical investigation of diffraction anomalies observed in FSS applications

Marcin K. Sarnowski, Thomas Vaupel, Volkert W. Hansen, Ernst Kreysa, Hans-Peter Gemuend, Vera A. Soglasnova

Author Affiliations +

Proceedings Volume 4008, Optical and IR Telescope Instrumentation and Detectors; (2000) https://doi.org/10.1117/12.395407
Event: Astronomical Telescopes and Instrumentation, 2000, Munich, Germany

Abstract

This paper reviews transmission anomalies of freestanding frequency surfaces (FSS), which are commonly used as filter and guiding structures in the far IR region. The effect is characterized by a sharp breakdown of the transmission factor in the passband and was first revealed by measurements. The paper demonstrates the numerical confirmation of these effects by computer aided calculations based on the method of moments combined with the Floquet theorem. The scattering characteristics are examined for different sets of parameters like the geometry of the structure, frequency, angle and polarization of the incident wave. The modeling with electric and magnetic currents allows the characterization of both patch and slot arrays.

Citation Download Citation

Marcin K. Sarnowski, Thomas Vaupel, Volkert W. Hansen, Ernst Kreysa, Hans-Peter Gemuend, and Vera A. Soglasnova "Experimental and numerical investigation of diffraction anomalies observed in FSS applications", Proc. SPIE 4008, Optical and IR Telescope Instrumentation and Detectors, (16 August 2000); https://doi.org/10.1117/12.395407

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