1. Generalised asymptotic boundary conditions and their application to composite right/left‐handed rectangular waveguide with double‐ridge corrugations. Issue 13 (1st October 2014) Authors: Kord, Ahmed M.; Eshrah, Islam A. Journal: IET microwaves, antennas & propagation Issue: Volume 8:Issue 13(2014) Page Start: 1014 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗