A 56-to-64GHz Linear Power Amplifier with 30.2dBm Psat and 23.5% PAEpeak Using Scalable Matched-Zone-Expanding Radial Power Combining with EM-Loss Reduction in 40nm Bulk CMOS

📋 论文概要

本文提出了一种56-64GHz线性功率放大器，采用可扩展的匹配区域扩展径向功率合成技术，实现了30.2dBm饱和输出功率和23.5%峰值功率附加效率，解决了毫米波频段在电压限制硅工艺中实现大输出功率的难题。

💡 主要创新点

• 提出可扩展的匹配区域扩展径向功率合成结构，克服了传统功率合成器随子PA数量增加输入阻抗变化的问题。
• 在56-64GHz频段同时实现了高功率（30.2dBm）和高效率（23.5% PAEpeak），兼顾线性度。

🏷 关键词

📄 原文摘要

Increasing demands on millimeter-wave (mm-wave) wireless transmission, including 5G NR FR2-2 and SATCOM, require low-cost, high-power, and high-efficiency power amplifier (PA) supporting multi-Gb/s data-rates. A major challenge at high mm-wave frequencies (V-band and above) is to provide a large transmitting output power in voltage-limited silicon processes [1]. Most conventional power-combining techniques for implementing mm-wave PAs use voltage-mode [2] and current-mode combining [3] (Fig. 5.3.1 top). With the increasing numbers of sub-PAs (i.e., m or n), the input impedance of the combiners (i.e., Zsub-PA) becomes too high or low in voltage- or current-mode combining (i.e., RL/m or n×RL), respectively. Limited by the impedance transforming ability of the on-chip transformer at high mm-wave frequencies, the selection of a PA core with optimal power and efficiency is restricted due to the specific Zopt of the PA core. Another critical issue for high-power PAs

👥 作者与机构

Deshan Tang, Bingzheng Yang, Aoran Han, Xun Luo

University of Electronic Science and Technology of China, Chengdu, China