A 65nm CMOS 1-to-10GHz Tunable ContinuousTime Low-pass Filter for High-Data-Rate Communications

📋 论文概要

该论文提出了一种在65nm CMOS工艺中实现的1至10GHz可调连续时间低通滤波器，采用Gm-C拓扑结构，解决了高频通信应用中滤波器截止频率不足的问题，实现了目前已知最高的截止频率。

💡 主要创新点

• 实现了1至10GHz的宽范围可调截止频率，为当时最高报告值。
• 采用Gm-C拓扑结构，并针对高频下极点对Q因子精度进行了优化，保证了传输函数的准确性。

🏷 关键词

📄 原文摘要

filters are in the frequency band of 1 to 3GHz [2,4-6], targeting applications like UWB communications or hard disk drives. Nevertheless, bands much higher, of about 10GHz, are to be addressed in the near future. This paper demonstrates an active low-pass filter tunable from 1 to 10GHz in 65nm CMOS, which is to our knowledge the highest ever cutoff frequency reported. In this work the Gm-C topology is adopted for its merits at high frequencies. In this technique, two critical parameters should be accounted for: the accuracy of the Q factors of the pole pairs (for correct transfer function) and parasitic capacitances (for maximal cut-off frequency). The former point is influenced by the phase shift of the integrators compounding the filter in the neighborhood of the

👥 作者与机构

Fawzi Houfaf1,2,3, Mathieu Egot1, Andreas Kaiser2, Andreia Cathelin1, Bram Nauta3

STMicroelectronics, Crolles, France IEMN / ISEN, Lille, France 3 University of Twente, Enschede, The Netherlands 1 2 As of today, the highest cut-off frequency low-pass continuous-time analog