APPARATUS AND METHOD FOR CALIBRATION OF SUPPLY MODUALTION IN TRANSMITTER

摘要

PURPOSE: A hybrid power supply modulator is provided to maintain stability according to input signal amplitude variation by correcting a device or an element configuring a linear amplification unit degrading stability, a frequency characteristic and linearity and to improve efficiency and an operation speed by controlling power cells of a linear unit according to an input signal. CONSTITUTION: A transmission device including a power supply modulator includes a detector(550) detecting an output signal of a power supply modulator and a power supply modulator(500) receiving the detected output signal(560) from the detector and correcting a modulation characteristic of the power supply modulator. [Reference numerals] (500) Power supply modulator; (510) Modem; (520) RF module; (530) RF power amplifier; (550) Detector; (560) Detected output signal; (AA) Correction data; (BB) Envelope signal; (CC) Feedback signal for correction;