A Continuous-Mode Harmonically Tuned 19-to-29.5GHz Ultra-Linear PA Supporting 18Gb/s at 18.4% Modulation PAE and 43.5% Peak PAE

📋 论文概要

本文提出了一种连续模式谐波调谐的19-29.5GHz超线性功率放大器，支持18Gb/s数据率，实现了18.4%的调制PAE和43.5%的峰值效率，解决了5G毫米波系统中高密度星座调制对线性度的严格要求。

💡 主要创新点

• 采用连续模式谐波调谐技术，在宽频带内实现高效和线性度优化。
• 通过超线性设计方法，同时提升AM-AM和AM-PM性能，支持256-QAM等高阶调制。

🏷 关键词

📄 原文摘要

The 5th generation (5G) mm-wave systems are expected to support wideband spectrum-efficient modulations (e.g., 64-QAM or 256-QAM) to achieve Gb/s-linkthroughput revolution. These complex modulation schemes, however, often come with high-density constellations that demand stringent linearity, i.e. AM-AM and AM-PM, on the mm-wave front-end circuits, in particular, the power amplifiers (PAs). In addition, to support future massive MIMOs, the mm-wave front-ends should be ultra-efficient in both their energy efficiency and area usage, posing even more constraints on the PA designs [1-5]. Practical mm-wave PAs, especially silicon-based PAs, always face a steep tradeoff between the PA efficiency and linearity. Conventional linear PAs, e.g., Class-AB PAs, offer design simplicity and good linearity. However, their over-simplified output harmonic terminations often limit the peak efficiency. Millimeter-wave

👥 作者与机构

Tso-Wei Li, Ming-Yu Huang, Hua Wang

Georgia Institute of Technology, Atlanta, GA