[IEEE 2010 IEEE International Symposium Antennas and Propagation and CNC-USNC/URSI Radio Science Meeting - Toronto, ON (2010.07.11-2010.07.17)] 2010 IEEE Antennas and Propagation Society International Symposium - Tunable 2D electromagnetic band-gap (EBG) structures based on micro-electro-mechanical systems (MEMS) for THz frequencies