POWER AMPLIFYING APPARATUS AND WIRELESS SIGNAL TRANSMITTER UTILIZING THE SAME

摘要

A power amplifying apparatus is provided. A reference signal generator provides a reference signal having an enabling state and a disabling state. A digital power amplifier generates a current based on the reference signal and an input signal. An output signal of the digital power amplifier is related to the current. When the reference signal is in the enabling state, the current is related to the input signal. When the reference signal is in the disabling state, the current is irrelevant to the input signal. During the enabling state of the reference signal, a data generator provides an output alternating between an in-phase signal and a quadrature-phase signal as the input signal to the digital power amplifier. When the reference signal is in the disabling state, the data generator provides a fixed signal as the input signal to the digital power amplifier.

主权项

1. A power amplifying apparatus, comprising:
a reference signal generator for providing a reference signal alternating between an enabling state and a disabling state; a digital power amplifier generating an internal current based on the reference signal and a data generator signal, and generating an output signal related to the internal current, wherein when the reference signal is in the enabling state, the output signal is related to the data generator signal, when the reference signal is in the disabling state, the output signal is irrelevant to the data generator signal; and a data generator generating the data generator signal and outputting the data generator signal to the digital power amplifier, wherein when the reference signal is in the enabling state, the data generator signal is alternating between an in-phase signal and a quadrature-phase signal, when the reference signal is in the disabling state, the data generator signal is a fixed signal.