Patent ID: 7560994

Claim:
A system for a power amplifier, comprising: a first common-source device having a first source, a first gate, a first drain, and a first body, wherein the first source is connected to the first body, and wherein the first gate is connected to an input port; a second common-gate device having a second source, a second gate, a second drain, and a second body, wherein the second source is connected to the first drain, wherein the second source is further connected to the second body, and wherein the second drain is connected to an output port, wherein the first common-source device provides a first output capacitance defined by the sum of a gate-to-source capacitance of the second common-gate device and a drain-to-body capacitance of the first common-source device, and wherein the second common-gate device provides a second output capacitance defined by a drain-to-body capacitance of the second common-gate device; and a load network connected to the output port, wherein the load network comprises a series combination of a capacitor, an inductor, and a resistor, wherein the first output capacitance and the second output capacitance are sized to operate with the load network in order to provide a Class-E switching condition.