An RF-PA Supply Modulator Achieving 83% Efficiency and -136dBm/Hz Noise for LTE-40MHz and GSM 35dBm Applications

📋 论文概要

该论文提出了一种用于RF功率放大器的供电调制器，实现了83%的效率和-136dBm/Hz的噪声性能，适用于LTE-40MHz和GSM 35dBm应用。解决了在平均功率跟踪和包络跟踪方法中，如何设计高效低噪声的供电调制器集成电路的挑战。

💡 主要创新点

• 实现了83%的高效率，同时保持极低的-136dBm/Hz噪声，优于现有方案。
• 支持LTE-40MHz和GSM 35dBm两种标准，具有宽频带和高输出功率能力。
• 采用混合结构设计，结合了低损耗的降压转换器和高速线性放大器，优化了峰值平均功率比信号的跟踪性能。

🏷 关键词

📄 原文摘要

constant supply voltage, has raised interest in enhancing the overall SM-PA efficiency. In the average-powertracking (APT) method, a buck converter simply generates stair-case voltages for a PA according to its required output-power level. In a more advanced envelopetracking (ET) method, typically a hybrid structure of a low-loss but slow buck converter and a high-speed linear amplifier is used to track the fast-changing signal envelope with its efficiency performance becoming important for high peak-to-average power-ratio (PAPR) signals, like LTE [1-4]. The challenge is how to design an SM-IC that can achieve both a large-envelope-tracking bandwidth and good system-power efficiency, while achieving low output noise to minimize

👥 作者与机构

Ji-Seon Paek, Yong-Sik Youn, Jeong-Hyun Choi, Dong-Su Kim,

Jun-Hee Jung, Young-Hwan Choo, Sung-Jun Lee, Seung-Chul Lee, Thomas Byunghak Cho, In-Yup Kang Samsung Electronics, Hwaseong, Korea Recently, supply modulation (SM), instead of a