Guiding and radiating properties of a metamaterial-based Resonant-Slot coupled cavity chain

Application of the resonant-slot coupled cavity chain as a Composite Right-handed-Left-handed transmission line (CRLH line) at microwave wavelengths is discussed. Design strategies for both the CRLH guiding structure and the backward-forward scanning leaky-wave antenna are reported. First theoretical valuations point to high power ability of such type of antenna, consisting of slotted waveguide with resonator-based filling. Applications in experimental plasma physics are intended. Theoretical background, numerical simulations and first experimental results are presented.