Negative capacitance

Negative capacitance circuit, active captive compensation.

Modify structural resonance / system level electromechanical coupling coefficient.

A negative capacitance circuit connected to a piezoelectric transducer. The stability conditions can be obtained in detail.

Experimental setup

In the experiment, a frequency reduction up to 26% is observed.

* Project for Pro. Guoliang Huang. Circuits setup adopted in adaptive metamaterials