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Showing 1 to 4 of 4 for “"Dielectric lenses"”.
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Design and characterization of flat lens antenna using aperture-coupled microstrip patches
… effective solution to conventional and curved dielectric lenses. The basic theory of operation of flat lens antenna unit cell is to collimate the feed spherical electromagnetic incident wave into planar wavefront at the back of the aperture. Therefore, the array unit cell must be designed to …
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Free-Space Measurements of Dielectrics and Three-Dimensional Periodic Metamaterials
… The metamaterial unit cell consists of two dielectric sheets intersecting at 90 degrees. The dielectric is a polyetherimide-based material 0.001” thick. Each sheet has a copper capacitively-loaded loop (CLL) structure on the front and a cut-wire structure on the back. Foam material is used …
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Accurate Characterisation of Refractive Components for Future CMB Missions
… components that were characterised were a set of dielectric lenses. These were made as part of a European Space Agency contract to further the refractive technology in the terahertz band of the frequency spectrum. Two different types of prototype lens were made for this project in Cardiff …