Extraordinary transmission analog for enhancing radiation from an electrically small radiator

An extraordinary transmission analog for strongly enhancing radiation from an electrically small radiator in the microwave regime is proposed in this paper. The electrically small radiated used here is a chip inductor loaded open coplanar monopole type antenna. EOT is achieved by implementing evanescent amplification using mu negative metamaterial placed symmetrically on both sides of the antenna. Near-field and far-field probing reveal that the mu negative split ring resonator not only amplifies the evanescent high spatial spectrum existing in the near-field of the antenna but also responsible for evanescent to propagation conversion.