Elliptic and Hyperbolic Dielectric Lens Antennas in mm-Waves
https://www.radioeng.cz/fulltexts/2011/11_01_270_275.pdf

77-GHz Integrated Antenna with Plano-Convex Lens: Design and Measurement
https://oar.a-star.edu.sg/jspui/bitstream/123456789/1658/1/77-GHz%20Integrated%20Antenna%20with%20Plano-Convex%20Lens_Design%20and%20Measurement.pdf

Low-Profile 77-GHz Lens Antenna With Array Feeder
https://www.researchgate.net/publication/231181092_Low-Profile_77-GHz_Lens_Antenna_With_Array_Feeder

Composite Reflective/Absorptive IR-Blocking Filters
Embedded in Metamaterial Antireflection Coated
Silicon
https://arxiv.org/pdf/1702.08454.pdf

Rexolite
https://www.emcoplastics.com/rexolite-1422/

Massa olika idexes:
http://fla.desy.de/localfsExplorer_read?currentPath=/afs/desy.de/group/fla/www/crd/JWLamb_Optics_Material_Data.PDF

Analytical solution for wave propagation through a graded index interface between a right-handed and a left-handed material
http://homepages.vub.ac.be/~ptassin/10.pdf

Anti-Reflective Coatings: A Critical, In-Depth Review
https://www.researchgate.net/publication/261830584_Anti-Reflective_Coatings_A_Critical_In-Depth_Review

Dielectric Lens Antennas
https://repositorio.iscte-iul.pt/bitstream/10071/11959/1/pre_print_Dielectric_Lens_Antennas_v2.pdf