A 40Gb/s 6pJ/b RX Baseband in 28nm CMOS for 60GHz Polarization MIMO

📋 论文概要

该论文提出了一种用于60GHz极化MIMO的40Gb/s 6pJ/b RX基带，采用28nm CMOS工艺。通过闪存编码tap-1系数以消除关键路径中的MUX，并利用可配置触发器链实现16-QAM与QPSK均衡的复用，解决了高速率下的延迟敏感性和功耗问题。

💡 主要创新点

• 采用闪存编码tap-1系数，去除关键路径中的MUX，结合锁存器设计降低延迟。
• 通过可配置触发器链将75UI 2b并行链转换为150UI 1b菊花链，复用16-QAM电路实现更高QPSK均衡能力。

🏷 关键词

📄 原文摘要

Since tap-1 feedback is latency sensitive (delay<UI/2 for current integration), the tap-1 coefficients are flash-encoded to allow removing the MUX from the critical path and incorporating the MUX with the feedback register using a latch-based design. To reuse the 16-QAM circuitry for higher QPSK equalization capability, the flip-flop chain is configurable to convert the 75UI 2b parallel chain to a 150UI 1b daisy chain. 1 To meet burgeoning demand for PAN connectivity between content-rich consumer devices, the next-generation 60GHz standard [1] supports higher per-user bandwidth with frequency-channel bonding and enhances frequency reuse with MIMO. At millimeter-wave frequencies, orthogonal polarizations (pol) of propagation provide an additional degree of antenna/frequency reuse for MIMO

👥 作者与机构

Shinwon Kang1, Chintan Thakkar1, Nathan Narevsky2, Kaushik Dasgupta1,

Saeid Daneshgar1, James Jaussi1, Bryan Casper1 Intel, Hillsboro, OR; 2University of California, Berkeley, CA a MUX to the tap-1 feedback