Nonlinear Electric Metamaterials

TL;DR

This paper introduces nonlinear electric metamaterials with tunable resonant electric responses at microwave frequencies, achieved by integrating varactor diodes, enabling control over electric properties without affecting magnetic responses.

Contribution

The work presents a novel design of nonlinear electric metamaterials using varactor diodes to achieve power-dependent frequency tuning of electric resonances.

Findings

Resonant electric response can be shifted by incident power.

Magnetic response remains unaffected by the nonlinearity.

Potential to combine with magnetic nonlinear metamaterials for negative index media.

Abstract

We propose and design a new type of nonlinear metamaterials exhibiting a resonant electric response at microwave frequencies. By introducing a varactor diode as a nonlinear element within each resonator, we are able to shift the frequency of the electric mode stop-band by changing the incident power, without affecting the magnetic response. These elements could be combined with the previously developed nonlinear magnetic metamaterials in order to create negative index media with control over both electric and magnetic nonlinearities.