1. A broadband slab lens antenna formed from gradient refractive index metamaterials composed of cross‐shaped cells. Issue 5 (May 2014) Authors: Yuan, Guishan; Dong, Xiaochun; Deng, Qiling; Liu, Chunheng; Lu, Yueguang; Shi, Haofei; Du, Chunlei Journal: Microwave and optical technology letters Issue: Volume 56:Issue 5(2014:May) Page Start: 1124 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗