RT Journal Issue PB T1 Volume 146, Issue 4 JN IEE Proceedings - Microwaves, Antennas and Propagation VO 146 IS 4 UL http://digital-library.theiet.org/;jsessionid=8mtqn8r1vg29.x-iet-live-01content/journals/ip-map/146/4 LA English OL EN