Second-harmonic generation and spectrum modulation by an active nonlinear metamaterial
- 30 March 2009
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 94 (13), 134102
- https://doi.org/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.Keywords
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