A 0.052mm2 Blocker-Tolerant Non-Uniform Current Sub-Sampling Receiver with a Discrete-Time FIR/IIR Filter Enabling 56dB Rejection in 28nm CMOS

📋 论文概要

本文提出了一种工作在18-22GHz的耐阻塞非均匀电流子采样接收机，采用离散时间FIR/IIR滤波和均衡化跨导单元，有效解决了混叠、噪声折叠以及带内外阻塞问题。在28nm CMOS工艺下实现，获得了高达56dB的阻塞抑制、-29.1dB EVM（64-QAM 150MS/s）和5.8dB的B1dB，功耗仅20mW。

💡 主要创新点

• 提出了非均匀电流子采样（NUCSS）架构，结合离散时间FIR/IIR滤波，显著提升阻塞抑制能力。
• 采用均衡化跨导单元（Equalized Gm-cells）以减轻混叠和噪声折叠效应。
• 实现的阻塞抑制比传统非均匀离散时间FIR接收机高14dB以上。

🏷 关键词

📄 原文摘要

052mm2 blocker-tolerant 18-to-22GHz non-uniform current subsampling (NUCSS) receiver featuring NU DT FIR/IIR filtering and equalized Gm-cells, addressing aliasing, noise folding, and alias/non-alias band blockers. Fabricated in 28nm CMOS, this prototype achieves up to 56dB blocker rejection, >14dB higher blocker rejection than conventional NU DT FIR RX, -29.1dB EVM for a 64-QAM 150MS/s signal centered at 20GHz, and B1dB of 5.8dB while consuming 20mW power. Wireless sub-sampling receivers (RXs) often offer a reduced implementation cost, i.e. low power and small area, by directly sampling the input voltage of the RF signal at a much lower clock frequency while relying on a desired harmonic aliasing for signal downconversion and reconstruction [1]. This helps in avoiding a significantly higher area

👥 作者与机构

Mostafa Ayesh1,2, Mike Shuo-Wei Chen2

now with Marvell, Irvine, CA University of Southern California, Los Angeles, CA 1 2 Abstract This paper presents a 0