Patent ID: 8324964
Filing Date: 2012-12-04
Classification: G05F,H03F

Abstract:
1. A power amplifier comprising: a high power mode output matching network having a first filter node and a second filter node, wherein the second filter node is coupled to a radio frequency output node; a high power mode output stage coupled to the first filter node of the high power mode output matching network, the high power mode output stage having an enable state and a disable state; an output switch having a switch input node and a switch output node coupled directly to the radio frequency output node; a medium power mode output stage including a first input and a first output, the first output coupled to the switch input node and through the output switch the medium power mode output stage in communication with the radio frequency output node, the medium power mode output stage having an enable state and a disable state; a low power mode output stage including a second input and a second output, the second output coupled to the switch input node and through the output switch the low power mode output stage in communication with the radio frequency output node, the low power mode output stage having an enable state and a disable state; a controller in communication with the high power mode output stage, the medium power mode output state and the low power mode output state, the controller adapted to: