Yurchenko, V. B.Ciydem, M.Gradziel, M.Murphy, J. A.Altintas, A.2015-07-282015-07-282014-091990-2573http://hdl.handle.net/11693/11642Design, fabrication and focal field measurements of W-band Fresnel lenses to produce well-shaped Gaussian beams in the focal domain are presented. Two lenses, one of Teflon and another of Polyamide, have been compared in their performance with a double-sided Fresnel lens of different design, with full height of Fresnel steps. Experiments show that a good focusing ability of all the lenses is achieved. They produce the target beam according to the design. Yet, the lenses of split-step design are thinner, have lower insertion losses, and a greater focal depth as compared to more conventional Fresnel lenses.EnglishFresnel LensesFocal FieldsGaussian BeamMm-waveThz ApplicationsArticle10.2971/jeos.2014.14007