Jaschke, ThomasThomasJaschkeRohrdantz, BenjaminBenjaminRohrdantzJacob, ArneArneJacob2020-05-082020-05-082014-03German Microwave Conference, GeMiC : (2014-03)http://hdl.handle.net/11420/6080A method to efficiently describe arbitrarily shaped dielectric lens antennas based on spherical harmonics is proposed. It requires a low number of expansion coefficients, thereby enabling a fast optimization. The approach is particularly useful for electrically small lenses. An exemplary lens design with a flat gain profile is obtained and validated through measurements.enConference PaperOther