Fig. 1. (a) Structural geometric parameters; (b) unit structure

Fig. 2. (a) Equivalent diagram of magnetic resonance; (b) equivalent circuit of magnetic resonance; (c) equivalent diagram of electric resonance; (d) equivalent circuit of electric resonance

Fig. 3. (a) Structure simulation map; (b) magnitude map of S parameters; (c) phase map of S parameters

Fig. 4. (a) Equivalent dielectric constant; (b) equivalent permeability

Fig. 5. Loss of left-handed area

Fig. 6. (a) Sample to be tested and its marshalling pattern in waveguide; (b) joint testing equipment; (c) measured S parameters; (d) measured permittivity; (e) measured permeability