【摘要】 提出了一种用于100/1000Base-TX收发器的频域均衡器和新颖的基线漂移消除电路.均衡器采用混和信号模式的自适应控制环路,系统优化使其性能不依赖于信道模型的精确性,控制环路稳定可靠,该均衡器还同时实现自动增益控制功能;基线漂移消除电路采用峰值检测器监测基线漂移,用负反馈思想实现漂移量的消除,消除精度高,性能可靠.电路采用0.25μm CMOS工艺进行了硅片验证,与文献结果相比,本文方案在性能和芯片面积上均具有明显优势.更多还原

【Abstract】 A frequency-domain equalizer with a mixed-signal adaptive control loop and a novel baseline wander (BLW) canceller are proposed.The equalizer is independent of channel-modeling accuracy,and its control loop is intrinsically stable.An AGC function is incorporated into the equalizer without an extra AGC circuit.The proposed BLW canceller uses a peak detector to monitor the BLW and full feedback method to accomplish BLW canceling.High canceling accuracy and robust performance are achieved.The circuits are tested in 0.25μm CMOS technology.Better performance and smaller silicon area are achieved compared with results in the literature.更多还原