Apparatuses and methods involving transducers and their tuning

Abstract

In certain examples, methods and circuit-based apparatuses involve or are directed to a transducer to be operated via at least one resonance frequency of the transducer, and to a tunable circuitry (e.g., negative capacitance control and/or resistance control) to change the resonance frequency and/or a bandwidth around the resonance frequency. In more specific aspects, a tunable negative capacitance control may be used to change the resonance frequency and/or damping resistance control without degrading a degree of sensitivity provided by the transducer. Another example, specific to a method, involves: operating a transducer, coupled to a negative capacitance, at a resonance frequency of the transducer; and changing or setting a characteristic concerning the resonance frequency by using a tunable circuit to effect a change of the resonance frequency and/or a bandwidth around the resonance frequency.

Dependencies are inferred from the claim text.