Title :
Infrared focusing mirror based on multilevel reflectarray
Author :
Ginn, James C. ; Alda, Javier ; Boreman, Glenn D.
Author_Institution :
Infrared Syst. Lab., Univ. of Central Florida, Orlando, FL, USA
Abstract :
This contribution shows the first demonstration of a focusing reflectarray working at infrared wavelengths. The principles of design are based on the resonance of sub-wavelength metallic patches, properly sized to produce a given phase shift between the incoming and reflected wave-fronts. The multilevel phase-shifts are arranged following a Fresnel zone scheme. The designed reflectarray is fabricated and tested, showing the expected focusing behaviour.
Keywords :
Dielectrics; Fresnel reflection; Geometrical optics; Mirrors; Optical design; Optical polarization; Optical refraction; Optical sensors; Resonance; Testing;
Conference_Titel :
Antennas and Propagation (EuCAP), 2010 Proceedings of the Fourth European Conference on
Conference_Location :
Barcelona, Spain
Print_ISBN :
978-1-4244-6431-9
Electronic_ISBN :
978-84-7653-472-4
