An Ultra-Compact Wideband Load-Insensitive Complex-Cascode LC-Neutralized Power Amplifier for 4:1-VSWR-Resilient Operations in Large-Scale Phased Arrays

📋 论文概要

本文提出了一种超紧凑宽带负载不敏感复合共源共栅LC中和功率放大器，用于解决大规模毫米波相控阵中因天线互耦导致的高电压驻波比（VSWR）问题，实现了4:1 VSWR下的弹性操作。

💡 主要创新点

• 提出复合共源共栅LC中和拓扑，在宽频带内实现负载不敏感特性。
• 采用超紧凑设计，显著减小芯片面积，适用于密集阵列。
• 通过电路设计增强对高VSWR的鲁棒性，无需额外校准或自适应电路。

🏷 关键词

📄 原文摘要

ARGUS SPACE AG, Zurich, Switzerland 1 2 Large-scale mm-wave phased arrays are crucial for the success of next-generation 5G/6G communication. Yet, using a dense array of antennas inevitably leads to mutual coupling between nearby antennas, causing antenna impedance variations that depend on frequency, scanning angle (Θ), and antenna location, resulting in a high Voltage Standing-Wave Ratio (VSWR). Wideband arrays with large scanning angles >±60º, such as arrays for airborne platforms, exhibit an exacerbated 4:1 antenna VSWR. This imposes challenges for the power-amplifier (PA) design, affecting OP1dB, power-gain (PG) flatness, and efficiency. Further, the PA PG and output phase are affected by the antenna VSWR. Consequently, these aspects substantially complicate the array calibration and degrade the phased array performance at large scanning angles. Figure 5.5.1 (top) shows the simulated PG of a

👥 作者与机构

Mohamed Eleraky1, Tzu-Yuan Huang1,2, Hua Wang1

ETH Zürich, Zürich, Switzerland