High-Performance Isolators and Notch Filters Based on N-Path Negative Transresistance

📋 论文概要

该论文提出了一种基于N路径负跨阻的高性能隔离器和陷波滤波器，解决了传统有源负阻电路在损耗补偿时易振荡、噪声和线性度差的问题。通过线性周期时变电路实现了高Q值可调带通/带阻滤波。

💡 主要创新点

• 提出N路径负跨阻概念，利用LPTV电路实现高Q值可调滤波。
• 设计了一种新型隔离器结构，在保持高性能的同时避免了传统负阻电路的振荡风险。
• 实现了高线性度和低噪声的陷波滤波器，适用于射频前端干扰抑制。

🏷 关键词

📄 原文摘要

circuits are used for a variety of functions, including the realization of oscillators and loss compensation. Active negative-resistance circuits, such as cross-coupled gm cells, can provide power gain but, when used for loss compensation, must be carefully designed to avoid oscillation. In addition, they present noise, linearity, and power-consumption challenges. In the recent past, linear periodically-time-varying (LPTV) circuits, typically implemented using switched capacitors, have shown unexpected yet highly desirable properties, including tunable high-Q bandpass/bandstop filtering [1] and non-magnetic nonreciprocity [2]. Here, we report a passive negative-transresistance (NTR) property of LPTV switched-capacitor circuits. This property is utilized in this work to realize

👥 作者与机构

Mohammad Khorshidian*1, Negar Reiskarimian*1,2, Harish Krishnaswamy1

Columbia University, New York, NY Massachusetts Institute of Technology, Cambridge, MA *Equally Credited Authors (ECAs) 1 2 Negative-resistance