Title

Directional Thermal Emission From A Leaky-Wave Frequency Selective Surface

Keywords

Frequency Selective Surface; Hemispherical Directional Reflectometer; Infrared; Thermal emission

Abstract

We design, fabricate, and characterize a Frequency Selective Surface (FSS) with directional thermal emission and absorption for long-wave infrared wavelengths (LWIR). The FSS consists of an array of patch antennas connected by microstrips, the ensemble of which supports leaky-wave type modes with forward and backward propagating branches. The branches are designed to intersect at 9.8 μm, and have a broadside beam with 20° FWHM at this wavelength. The absorption along these branches is near-unity. Measurement of the hemispherical directional reflectometer (HDR) shows good agreement with simulation. The ability to control the spectral and directional emittance/absortpance profiles of surfaces has significant applications for radiation heat transfer and sensing. © 2013 SPIE.

Publication Date

12-9-2013

Publication Title

Proceedings of SPIE - The International Society for Optical Engineering

Volume

8806

Number of Pages

-

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.1117/12.2023772

Socpus ID

84889002772 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84889002772

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