Patent ID: 9461698
Filing Date: 2016-10-04
CPC Classification: H04B

Claim Text:
1. A communications device comprising: a transmit path comprising first and second digital-to-analog converters (DACs) and having at least one non-linear characteristic; a receive path operable simultaneously with said transmit path and at a same frequency as said transmit path; said receive path comprising first and second analog-to-digital converters (ADCs); and processing circuitry configured to said transmit path configured to generate an analog feedforward signal based upon the feedforward signal, and generate a transmit output signal; said receive path comprising a combiner configured to combine the analog feedforward signal and an analog receive signal; said processing circuitry comprising a sub-band predistorter configured to receive an input signal and generate in-phase (I) and quadrature (Q) signals, and a phase conversion circuit configured to receive the I and Q signals and output at least one intermediate signal, the baseband signal being based upon the at least one intermediate signal.