Hyperbolic/anisotropic MNZ metasurface opposed beam antenna

We theoretically present an opposed beam antenna at microwave frequencies by combining a dual-band printed dipole with a fractal metasurface. The proposed metasurface has two unnaturally response regions of electric hyperbolic dispersion and anisotropic near-zero permeability (AMNZ) that is realized by properly designing an array of fractal rings. The simulated results show that this AMNZ metasurface can work at 1.55 GHz as a flat lens while a phenomenon of anomalous reflection at 2.45 GHz is provided as the hyperbolic dispersion of metasurface. At the two desired frequencies, the beam directions are opposed and controlled.