公开(公告)号：US20240356648A1

公开(公告)日：2024-10-24

申请号：US18583011

申请日：2024-02-21

Applicant: KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION

Inventor： Chulwoo KIM ,  Seongcheol KIM ,  Jincheol SIM ,  Youngwook KWON ,  Junseob SO

IPC: H04B10/40 ,  H04B10/524

CPC classification number: H04B10/40 ,  H04B10/524

Abstract: Disclosed are a PAM-4 transceiver for capacitive-driven channels capable of canceling crosstalk and an operation method thereof. The PAM-4 transceiver includes a first channel that transmits and receives a PAM-4 signal generated based on a first input signal through a coupling capacitor disposed at a transmitting stage, and a second channel and a third channel disposed adjacent to the first channel, and the first channel includes a converter that receives a second input signal of the second channel and a third input signal of the third channel, and a cancellation circuit connected to the converter and that cancels a crosstalk occurring in the first channel due to the second input signal and the third input signal, and the cancellation circuit outputs a compensation signal corresponding to the crosstalk based on the second input signal and the third input signal.

公开(公告)号：US20250088394A1

公开(公告)日：2025-03-13

申请号：US18827131

申请日：2024-09-06

Applicant: KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION

Inventor： Chulwoo KIM ,  Youngwook KWON ,  Jincheol SIM ,  Seung-Woo PARK ,  Seongcheol KIM

IPC: H04L25/03 ,  H03K5/00 ,  H03K17/56 ,  H04L25/49

Abstract: The transmitter includes a driver that is connected to an output node and drives the output node with a pulse amplitude modulation-4 (PAM-4) signal having four levels of a most significant bit (MSB) and a least significant bit (LSB), and an equalizer that is connected to the output node and compensates for attenuation of the PAM-4 signal based on a first operating voltage, wherein the equalizer compensates for the attenuation based on applying a second operating voltage having a level greater than a level of the first operating voltage to the output node when a transition from a first level to a second level among the four levels is a rising transition, and compensates for the attenuation based on forming a path for extracting an equalizing current from the output node when the transition from the first level to the second level is a falling transition.