Transmission enhancement between rectangular waveguides by means of left-handed media
Results showing the experimental verification of the transmission improvement when a left-handed material (LHM) is placed in between rectangular waveguides are presented. This improvement has been characterised by means of measuring the increase of transmission (S/sub 21/ parameter) and is related to the enhancement of the radiating features of an open-ended waveguide caused by the use of the LHM as superstrate.