A Fully Integrated Dual-Mode CMOS Power Amplifier for WCDMA Applications

📋 论文概要

本文提出了一种全集成双模式CMOS功率放大器，用于WCDMA手持设备。该设计通过低功率效率增强技术，在保持高输出功率的同时显著提升了低功率模式下的效率，从而延长电池寿命。

💡 主要创新点

• 提出双模式（高功率/低功率）工作架构，根据概率分布函数优化低功率效率。
• 采用片上传输线变压器实现阻抗变换和功率合成，提升集成度和性能。
• 集成CMOS PA到单芯片中，减少外部元件，适用于低成本手持应用。

🏷 关键词

📄 原文摘要

Samsung Electro-Mechanics, Suwon, Korea 1 Integrating a CMOS RF power amplifier (PA) into a single-chip transceiver is one of the most challenging works in implementing radio front-ends, which presents many advantages in handheld applications [1,2]. Especially, low-power efficiency enhancement (LPEE) techniques, considering the probability distribution function of the practical wireless communication environments, extend the battery lifetime in handheld devices [1-3]. Therefore, there are many studies for the LPEE in handheld CMOS PAs [1,2] using transmission-line transformers (TLTs) with parallel amplifiers. Designing a series/parallel-combining transformer (SCT/PCT) is one of the key factors in the implementation of a dual-mode CMOS PA. However, the dual-mode performances of the PA must be optimized by using one output TLT structure. It is expected that there are difficulties in designing a

👥 作者与机构

Bonhoon Koo1, Taehwan Joo1, Yoosam Na2, Songcheol Hong1

KAIST, Daejeon, Korea