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