US 12,068,768 B2
Obtaining reliable and specific data for adaptive digital predistortion
Stephen Summerfield, Santa Clara, CA (US); Praveen Chandrasekaran, Bangalore (IN); and Christopher Mayer, Dover, MA (US)
Assigned to Analog Devices International Unlimited Company, Limerick (IE)
Filed by Analog Devices International Unlimited Company, Limerick (IE)
Filed on May 5, 2023, as Appl. No. 18/312,947.
Application 18/312,947 is a continuation of application No. 17/537,724, filed on Nov. 30, 2021, granted, now 11,671,130.
Claims priority of provisional application 63/123,573, filed on Dec. 10, 2020.
Prior Publication US 2023/0318641 A1, Oct. 5, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H04B 1/04 (2006.01)
CPC H04B 1/0475 (2013.01) [H04B 2001/0425 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A digital predistortion (DPD) system with multi-mode capture, the DPD system comprising:
a DPD actuator circuit to predistort at least a portion of an input signal using DPD coefficients, the DPD coefficients associated with a nonlinear component;
a multi-mode DPD capture circuit to acquire one or more captures of a feedback signal, the multi-mode DPD capture circuit operable in a plurality of modes, and the feedback signal indicative of an output signal of the nonlinear component; and
a DPD adaptation circuit to update the DPD coefficients based at least in part on the one or more captures.