Patent ID: 8378750

Claim:
A class AB amplifier, comprising: a first inductor having a first terminal and a second terminal, wherein the first terminal of the first inductor is in communication with a voltage source terminal; a first transistor having a source terminal and a drain terminal, wherein the drain terminal of the first transistor is in communication with the second terminal of the first inductor; a second transistor having a source terminal and a drain terminal, wherein the source terminal is in communication with the source terminal of the first transistor; a second inductor having a first terminal and a second terminal, wherein the first terminal of the second inductor is in communication with the drain terminal of the second transistor, and the second terminal of the second inductor is in communication with a reference potential; a first variable capacitance connected in parallel with the first inductor; a second variable capacitance connected in parallel with the second inductor; and a first capacitance having a first terminal and a second terminal, wherein the first terminal of the first capacitance is connected directly to each of the source terminal of the first transistor and the source terminal of the second transistor, and the second terminal of the first capacitance is connected directly to a voltage input to the class AB amplifier, wherein the drain terminal of the first transistor is coupled to the drain terminal of the second transistor by a second capacitance, and wherein the class AB amplifier outputs a first output signal and a second output signal across the second capacitance.