1. Gain enhancement of circular waveguide antennas using near‐zero index metamaterials. Issue 6 (8th March 2019) Authors: Mohammadi, Ershad; Tsakmakidis, Kosmas L.; Sohrabi, Foozieh; Tavakoli, Ahad; Dehkhoda, Parisa Journal: Microwave and optical technology letters Issue: Volume 61:Issue 6(2019:Jun.) Page Start: 1617 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗