US 12,424,979 B2
Method for predicting envelope features and generating switching converter control signal in envelope tracking power supply, storage medium, and electronic device
Yan Zhou, Jiangsu (CN); Guodong Liu, Jiangsu (CN); Wenxuan Xie, Jiangsu (CN); Yan Fan, Jiangsu (CN); and Zhihao Zhang, Jiangsu (CN)
Assigned to Nanjing University Of Posts And Telecommunications, Jiangsu (CN)
Filed by Nanjing University Of Posts And Telecommunications, Jiangsu (CN)
Filed on May 22, 2023, as Appl. No. 18/321,723.
Application 18/321,723 is a continuation of application No. PCT/CN2022/127327, filed on Oct. 25, 2022.
Claims priority of application No. 202210172081.8 (CN), filed on Feb. 24, 2022; and application No. 202210598112.6 (CN), filed on May 30, 2022.
Prior Publication US 2023/0291357 A1, Sep. 14, 2023
Int. Cl. H03F 1/02 (2006.01); G06N 3/09 (2023.01); H02M 3/158 (2006.01)
CPC H03F 1/0238 (2013.01) [G06N 3/09 (2023.01); H02M 3/1584 (2013.01); H03F 2200/451 (2013.01)] 24 Claims
OG exemplary drawing
 
1. A method for predicting envelope features and generating a switching converter control signal in an envelope tracking power supply, comprising:
according to baseband data or data after modulation mapping, predicting, by a first neural network model, and outputting a peak value of a peak point of a radio frequency envelope signal, a time point corresponding to the peak value, a valley value of a valley point of the radio frequency envelope signal and a time point corresponding to the valley point;
according to the valley point of the radio frequency envelope signal and the time point corresponding to the valley point, sending, by a reference value generating module, a generated reference value to a pulse width modulation control signal generating module to obtain a low-bandwidth switching converter control switch signal;
according to adjacent valley point and peak point of the radio frequency envelope signal, and time points corresponding to the adjacent valley point and peak point, sending, by a status determiner, generated status information to a high-bandwidth control signal generating module to obtain a high-bandwidth switching converter control switch signal; and
when the radio frequency envelope signal is in an ascending status, according to a key information string comprising the peak value, the valley value, and the time points respectively corresponding to the peak value and the valley value, determining a slope k of a connecting line between the valley point and the peak point, sending, by a slope calculator, the calculated slope k to a filter inductor control signal module, and selecting and turning on a corresponding filter inductor in a high-bandwidth switching converter.