abstract

• A dual-band device has been designed and simulated to simultaneously detect optical radiation in the far infrared (at 10 μm) and the visible band. The infrared detector consists of a spiral antenna obtained from an adaptation of a Fresnel zone plate. Symmetric and asymmetric designs have been proposed and simulated. The response in the infrared is obtained from a computational electromagnetic calculation. The diffraction pattern at the focal point of the element has been calculated to check the feasibility of the modified design.

authors

• Alda J.
• González Contreras Francisco Javier

publication date

• 2010-01-01

published in

• EuCAP 2010 - The 4th European Conference on Antennas and Propagation  Proceedings

keywords

• Asymmetric design; Dual-band; Far-infrared; Focal points; Fresnel; Fresnel zone plate; Modified designs; Optical radiations; Visible band; Computational electromagnetics; Detectors; Helical antennas; Holographic interferometry; Spiral antennas

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