International Symposium on Antennas and Propagation
Novel Metamaterial Cell-Based Resonator Antenna with Broadside Radiation Pattern
Milan Polivka, Martin Syrovy, David Vrba, Alois Holub, Milan Svanda,
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One of the first metamaterial (MTM) cell-based antenna has probably been proposed by Schussler et al.  as patch loaded with LC cell to realize transmission line with negative phase velocity to shorten the patch radiator size. Similar structure has been then proposed by Sanada et al  in composite right/left-handed transmission line (CRLH TL) planar technology  as so called zero-order resonator antenna. Further similar arrangement with two parallel MTM cells vertical vias has been proposed latter by Qureshi et al. . In  the main current source areas are concentrated on the vias that are excited in-phase so that the antenna exhibit monopole-like radiation pattern. One of the further presented design  has brought just realization with MTM transmission line that exhibit either negative permittivity or negative permeability. The monopole-like radiation pattern remains the same. Here we present novel ZOR MTM radiation structure in composite right/left-handed micro-coplanar transmission line (CRLH MC TL)  which exhibits both-side broadside radiation pattern (radiation maximum is normal to the structure surface). Description of the MTM unit cell, the whole structure itself, current distribution, measured antenna parameters as well as comparison with simple half wavelength microstrip patch is presented here.