DPD Demodulator for PA Linearization GENERAL DESCRIPTION This document describes the specification for the IDTF1370 Digital Pre-Distortion Demodulator for PA linearization.
This series of devices is offered in 2 variants to cover common UTRA bands.
See part number matrix below for additional detail.
COMPETITIVE ADVANTAGE In typical basestation transmitters digital pre-distortion is employed to improve the Transmitter performance.
The signal coming out of the PA is sampled and the incoming Tx chain I&Q data is pre-distorted to counteract the distortion inherent in the PA.
The PA signal is adjusted via a digital step attenuator to a lower level and then sub-sampled at an IF frequency of ~20...

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