Second-Harmonic Generation and Spectrum Modulation by Active Nonlinear Metamaterial
arXiv:0901.1350 · doi:10.1063/1.3111437
Abstract
The nonlinear properties of a metamaterial sample composed of double-layer metallic patterns and voltage controllable diodes are experimentally investigated. Second harmonics and spectrum modulations are clearly observed in a wide band of microwave frequencies, showing that this kind of metamaterial is not only tunable by low DC bias voltage, but also behaves strong nonlinear property under a small power incidence. These properties are difficult to be found in normal, naturally occurring materials.
14 pages, 4 figures