An 87.1% Efficiency RF-PA Envelope-Tracking Modulator for 80MHz LTE-Advanced Transmitter and 31dBm PA Output Power for HPUE in 0.153μm CMOS

📋 论文概要

本文提出了一种用于80MHz LTE-Advanced发射机的包络跟踪调制器（ETM），通过动态调整射频功率放大器的供电电压，实现了87.1%的高效率和31dBm的PA输出功率，解决了高PAPR信号下PA效率低下的问题。

💡 主要创新点

• 实现了87.1%的高效率包络跟踪调制器，适用于80MHz宽带LTE-A信号。
• 支持31dBm的PA输出功率，满足移动终端发射需求。
• 采用先进电路设计，在宽带和高功率下保持高效率。

🏷 关键词

📄 原文摘要

Sheng-Hong Yan, Ting-Hsun Kuo, Chia-Sheng Peng, Chieh-Hsun Hsiao, Hsin-Hung Chen, Da-Wei Sung, Chien-Wei Kuan MediaTek, Hsinchu, Taiwan Modulation schemes employed in long-term-evolution advanced (LTE-A) services for higher data-rate with high peak-to-average power ratios (PAPR) are becoming more complicated, which degrades the efficiency of RF power amplifiers (PA). Envelope-tracking modulators (ETM) have been proposed to improve the PA efficiency and linearity by dynamically adjusting the supply voltage of the RF PA according to the envelope of the transmitted signal. To increase the uplink data-rate, LTE-A intra-band contiguous carrier aggregation (CCA) requires wider bandwidth ETM to track the envelope. The hybrid ac-coupled modulator [1-6] has the notable high efficiency advantage that it is able to couple the AC envelope-modulated signal to the ETM output. Unfortunately, the system efficiency and tracking bandwidth are still limited by the architecture selection

👥 作者与机构

Chen-Yen Ho, Shih-Mei Lin, Che-Hao Meng, Hao-Ping Hong,