Miniaturised and multiband artificial magnetic conductors and electromagnetic band gap surfaces

Miniaturised planar metallodielectric arrays without grounding vias are presented as artificial magnetic conductors (AMC) and electromagnetic band gap (EBG) surfaces. Miniaturisation is achieved by either employing arrays with complex elements or by closely coupling arrays in a multilayer configuration. The miniaturisation and the bandwidth for the proposed configurations is assessed. Left-handed propagation of surface waves is theoretically predicted. Multiband configurations are also proposed. Full wave simulated results and measurements are presented to validate the findings.