SWITCHING POWER AMPLIFIER CAPABLE OF PREVENTING THE DISTORTION OF AN OUTPUT POWER OF A SWITCHING DRIVER

摘要

PURPOSE: A switching power amplifier is provided to improve linearity by removing the noise of the output power.;CONSTITUTION: A switching power amplifier (100) includes a switching driver (110) and an output power compensator (120). The switching driver operates by receiving a driver power and outputs an output power corresponding to the driver power according to an input signal to an output node. The output power compensator operates by receiving a compensation power higher than the driver power and senses the variation of a voltage level of the output power by negatively feeding back the output power on the output node. The output power compensator maintains the output power in a constant voltage level by increasing or decreasing the capacity of current flowing through the output node.;COPYRIGHT KIPO 2013;[Reference numerals] (130) Filter