US 12,323,276 B1
Redriver chip, method, and device for active copper cable
Quanhui Sun, Shanghai (CN); Xuefeng Chen, Shanghai (CN); Kaitao Jin, Shanghai (CN); and Pei Jiang, Shanghai (CN)
Assigned to PHOTONIC TECHNOLOGIES (SHANGHAI) CO., LTD., Shanghai (CN)
Filed by PHOTONIC TECHNOLOGIES (SHANGHAI) CO., LTD., Shanghai (CN)
Filed on Jan. 28, 2025, as Appl. No. 19/038,747.
Claims priority of application No. 202410977095.6 (CN), filed on Jul. 22, 2024.
Int. Cl. H04L 25/03 (2006.01)
CPC H04L 25/03006 (2013.01) 20 Claims
OG exemplary drawing
 
1. A redriver chip for an active copper cable, comprising:
an input signal detection module, configured for detecting a signal amplitude of an input signal, wherein the input signal is a differential voltage signal;
an amplitude gain control module, configured for: performing amplitude control based on a first adjustable gain, to the signal amplitude of the input signal, in a first frequency range with reference to a first frequency, so as to obtain an intermediate signal corresponding to the input signal;
an equalization control module, connected to the amplitude gain control module, configured for: performing gain control based on a second adjustable gain, to a gain of a high-frequency part of the intermediate signal relative to a low-frequency part of the intermediate signal, in a second frequency range with a second frequency as an equalization frequency point, so as to obtain an output signal corresponding to the input signal, wherein the first frequency range is larger than the second frequency range, and the first frequency is lower than the second frequency,
wherein the redriver chip is configured for: amplifying in equal proportions a low-frequency part of the output signal relative to a low-frequency part of the input signal and a high-frequency part of the output signal relative to a high-frequency part of the input signal.