A Blocker-Tolerant Receiver with VCO-Based Non-Uniform Multi-Level Time-Approximation Filter with -36dB EVM in 28nm CMOS

📋 论文概要

该论文提出了一种基于VCO的非均匀多级时间近似滤波器，用于实现抗干扰接收机，解决了在拥挤频谱中带外阻塞信号恶化带内EVM的问题。通过在28nm CMOS工艺下实现，达到了-36dB的EVM指标。

💡 主要创新点

• 提出基于VCO的非均匀多级时间近似滤波架构，相比传统均匀采样滤波，能更有效抑制近端阻塞信号。
• 采用非均匀采样和多级时间近似技术，在保持低功耗和小面积的同时显著提升接收机对阻塞信号的容忍度。

🏷 关键词

📄 原文摘要

of Waterloo, Waterloo, Canada 1 2 The growing demand for wirelessly connected devices and networks has resulted in increasingly crowded spectrum, and hence blocker-tolerant receivers have drawn more attention. The undesired signals present at the frequencies other than the desired band, often referred to as out-of-band (OOB) blockers, can degrade in-band EVM of the receiver after sampling. Therefore, analog filtering along the receiver path is often needed to attenuate blockers and preserve the desired signal quality. While low-order analog filters can mitigate far-out blockers, nearby blockers require high-order bandpass or notch filtering. Prior high-order analog filter designs [1-11] have been demonstrated but are often limited in reconfigurability in terms of changing filter response or passband/notch

👥 作者与机构

Ce Yang1,2, Shiyu Su1,3, Mostafa Ayesh1, Soumya Mahapatra1, Maysara Hamada1,

Vinay Chenna1, Hossein Hashemi1, Mike Shuo-Wei Chen1 University of Southern California, Los Angeles, CA d-Matrix, Santa Clara, CA 3 University