Amplifiers with negative capacitance circuits
AssigneeIntersil Americas Inc.
InventorsPhilip V. Golden, Peter J. Mole
Life of this patent
Estimating the term…
Abstract
Provided herein are amplifiers including negative capacitance circuits for reducing distortion resulting from a gate-source (or base-emitter) capacitance of output stages of such amplifiers. Such a negative capacitance circuit is connected in parallel with the gate-source (or base-emitter) capacitance of the output stage to shunt the gate-source (or base-emitter) capacitance and thereby reduce distortion. Also provided herein are methods for use with amplifiers including an output stage, including connecting a negative capacitance circuit in parallel with a base-emitter capacitance of the output stage.
Claims26
An amplifier circuit, comprising:
- an input stage;
- an output stage that is driven by the input stage, the output stage having a gate-source capacitance;
- and
- a negative capacitance circuit connected in parallel with the gate-source capacitance of the output stage to shunt the gate-source capacitance of the output stage.
A method for use with an amplifier circuit including an output stage, comprising:
- (a) providing a negative capacitance circuit;
- and
- (b) connecting the negative capacitance circuit in parallel with the gate-source capacitance of the output stage.
An amplifier circuit, comprising:
- an input stage;
- an output stage that is driven by the input stage, the output stage having a base-emitter capacitance that causes distortion;
- and
- a negative capacitance circuit connected in parallel with the base-emitter capacitance of the output stage to shunt the base-emitter capacitance of the output stage.
A method for use with an amplifier circuit including an output stage, comprising:
- (a) providing a negative capacitance circuit;
- and
- (b) connecting the negative capacitance circuit in parallel with the base-emitter capacitance of the output stage.
Dependencies are inferred from the claim text.