Design of a Broadband Metasurface Luneburg Lens for Full-Angle Operation Li, Jianping ; Jin, Ronghong ; Geng, Junping ; Liang, Xianling ; Wang, Kun ; Premaratne, Malin ; Zhu, Weiren Abstract Publication: IEEE Transactions on Antennas and Propagation Pub Date: April 2019 DOI: 10.1109/TAP.2018.2889006 Bibcode: 2019ITAP...67.2442L