A 22.4-to-30.7GHz Phased-Array Receiver with Beam-Pattern Null-Steering and Beam-Tracking Techniques Achieving >30.2dB OTA-Tested Spatial Rejection

📋 论文概要

该论文提出了一款工作在22.4-30.7GHz的相控阵接收机，采用波束零陷导向和波束追踪技术，有效抑制空间分散干扰，避免接收机饱和和非线性失真。

💡 主要创新点

• 提出波束零陷导向技术，可在干扰方向生成空间陷波，而不显著降低主瓣增益。
• 结合波束追踪技术，动态调整波束指向，提高对移动干扰的抑制能力。
• 实现了宽带频率覆盖（22.4-30.7GHz）下的高性能接收。

🏷 关键词

📄 原文摘要

environments often suffer from spatially diversified interference, which leads to saturation and non-linear distortion in the RXs. One commonly used approach to mitigate this issue is the application of sidelobe suppression methods using window functions [1,2], which comes with a drawback of array gain reduction. Alternatively, spatial notch filters are proposed, which can generate a spatial notch to undesired in-band blockers. This can be achieved at baseband and intermediate frequency (IF) stages where the blocker received in each channel is amplified, downconverted, and processed [3,4]. However, the blocker handling capability is limited by the linearity of the downconversion mixers and subsequent IF circuits, thereby a power-hungry, highly linear mixer is in demand.

👥 作者与机构

Yiming Yu, Bohan Sun, Mengqian Geng, Chenxi Zhao, Huihua Liu, Yunqiu Wu,

Jingzhi Zhang, Kai Kang University of Electronic Science and Technology of China, Chengdu, China Mm-wave phased-array receivers (RXs) operating in complicated electromagnetic