A Fully Integrated Highly Reconfigurable DiscreteTime Super-Heterodyne Receiver

📋 论文概要

该论文提出了一种全集成的高度可重构离散时间超外差接收机，通过采用离散时间信号处理技术解决了传统超外差架构中高质量因子带通滤波器难以集成的问题，从而避免了零中频或低中频接收机中的闪烁噪声、时变直流偏移、带内本振泄漏和对二阶互调敏感等问题。

💡 主要创新点

• 提出了一种基于离散时间技术的超外差接收机架构，实现了高IF下的图像抑制，无需高质量因子带通滤波器。
• 实现了高度可重构性，支持多种工作模式和带宽配置，提高了接收机的灵活性和适应性。
• 通过全集成设计，在CMOS工艺中实现了高性能接收，避免了传统超外差接收机的外部滤波器需求。

🏷 关键词

📄 原文摘要

Since the invention of radio, superheterodyne has been the architecture of choice for receivers (RX). Thanks to its high intermediate-frequency (IF), the problems related to flicker noise, time-varying dc offsets, in-band LO leakage and sensitivity to 2nd-order intermodulation are simply avoided. Unfortunately, the high IF requires high-quality-factor (Q) band-pass filters for image rejection, which cannot be easily integrated in CMOS. This forced the CMOS receivers to migrate to zero (or low) IF and suffer from the abovementioned problems. Recently, there have been attempts to revisit the high IF operation by exploiting N-path filtering

👥 作者与机构

Massoud Tohidian, Iman Madadi, Robert Bogdan Staszewski

Delft University of Technology, Delft, The Netherlands