US 12,451,900 B2
Analog assisted feed-forward equalizer
Ahmed Safwat Mohamed Aboelenein Elmallah, San Jose, CA (US); Ahmed Othman Mohamed Mohamed ElShater, San Jose, CA (US); and Tamer Mohammed Ali, San Jose, CA (US)
Assigned to MEDIATEK INC., Hsinchu (TW)
Filed by MediaTek Inc., Hsin-Chu (TW)
Filed on Sep. 28, 2023, as Appl. No. 18/477,471.
Claims priority of provisional application 63/381,944, filed on Nov. 2, 2022.
Prior Publication US 2024/0146326 A1, May 2, 2024
Int. Cl. H03M 1/66 (2006.01); H03M 1/46 (2006.01); H03M 1/80 (2006.01); H04L 25/03 (2006.01)
CPC H03M 1/662 (2013.01) [H03M 1/462 (2013.01); H03M 1/468 (2013.01); H03M 1/802 (2013.01); H03M 1/804 (2013.01); H04L 25/03012 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An apparatus for feed-forward equalization, comprising:
a first charge element digital-to-analog converter (DAC) with a first output, the first charge element DAC comprising a first plurality of charge storage elements, the first charge element DAC being configured to:
store first samples of charge based on respective first portions of a digital input signal; and
generate a first analog output signal proportional to the first portions of the digital input signal and based on the first samples of charge; and
a second charge element DAC with a second output coupled to the first output, the second charge element DAC comprising a second plurality of charge storage elements, the second charge element DAC being configured to:
store second samples of charge based on respective second portions of the digital input signal; and
generate a second analog output signal proportional to the second portions of the digital input signal and based on the second samples of charge; and wherein
the first output and the second output are coupled at a node to combine the first analog output signal and the second analog output signal to generate a third analog output signal.