A 0.22mm2 CMOS Resistive Charge-Based Direct-Launch Digital Transmitter with -159dBc/Hz Out-of-Band Noise

📋 论文概要

本文提出了一种基于电阻电荷的直接发射数字发射机，芯片面积仅0.22mm²，实现了-159dBc/Hz的极低带外噪声。该设计避免了传统模拟架构中笨重的重构滤波器，在保持高能效的同时显著减小了面积。

💡 主要创新点

• 采用电阻电荷型直接发射架构，无需传统低通滤波器，大幅缩小芯片面积。
• 通过优化电荷共享和时序控制，实现-159dBc/Hz的超低带外噪声，满足严格频谱掩模要求。

🏷 关键词

📄 原文摘要

communication systems is dominated by the tradeoff between cost and performance. While the former claims ever-smaller footprints and bill of materials (BOM), the latter comprises a stringent set of requirements regarding power consumption, signal integrity and out-of-band noise emission. Analog-intensive architectures [1,2] typically deliver the best noise performance at the cost of intensive lowpass filtering, hence increasing area consumption with bulky reconstruction filters. The digital transmitters [3-5], on the other hand, are significantly more portable and area efficient, but they typically fall short in terms of out-of-band noise and spurious emission. A charge-based architecture was presented in [6], using incremental signaling in a switched-capacitance

👥 作者与机构

Pedro Emiliano Paro Filho1,2, Mark Ingels1, Piet Wambacq1,2, Jan Craninckx1

imec, Leuven, Belgium, Vrije Universiteit Brussel, Brussels, Belgium 1 2 As in most RF circuits, the design of transmitters for advanced mobile