Predistortion equalizer with resistive combiners and dividers

Details Predistortion equalizer with resistive combiners and dividers Predistortion equalizer with resistive combiners and dividers

H - Electricity

04

B

333/26

H04B 3/14 (2006.01) H03F 1/32 (2006.01)

Patent

CA 2021622

A predistortion equalizer for a power amplifier includes a linear channel and a nonlinear channel. A phase shifter is associated with the linear channel and an attenuator is associated with the nonlinear channel. A resistive power divider divides the received signal which is to be predistorted and divides it into two parts, each of which is applied to one of the channels. The two parts may be equal in magnitude. The linear and nonlinear signals at the outputs of the linear and nonlinear channels, respectively, are combined out-of-phase in a resistive combiner to produce a predistorted signal for application to a power amplifier. The resistive combiner and divider maximize bandwidth.

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