A Scalable Direct-Sampling Broadband Radar Receiver Supporting Simultaneous Digital Multibeam Array in 65nm CMOS

📋 论文概要

本文提出了一种基于65nm CMOS工艺的可扩展直接采样宽带雷达接收机，支持同时数字多波束阵列。该接收机面向脉冲雷达系统，解决了低功率脉冲雷达信号检测和精确定距的挑战。

💡 主要创新点

• 提出直接采样架构，无需下变频，简化接收机设计并提高宽带性能。
• 支持可扩展的数字多波束阵列，实现同时多方向探测。
• 采用65nm CMOS工艺，实现低功耗和高集成度。

🏷 关键词

📄 原文摘要

Intelligent environments significantly impact human daily lives through embedded sensing and actuating systems. Wireless sensors that can provide non-contact radio information are indispensable. Impulse radar is positioned as a favorable candidate in monitoring and sensing objects [1-3]. The impulse radio is inherently multipath immune and suitable for precision ranging. Accurately detecting signals with low power impulse radios imposes design challenges to impulse radar receivers. In this work, a direct-sampling receiver is proposed and implemented for an impulse radar system. It can support GHz instantaneous bandwidth and more than 100GS/sec equivalent sampling rate through the highspeed sampling circuits and on-chip timing circuitry. The wide bandwidth scattering time-domain waveforms in the radio interaction between the object and radar can be sampled and digitized by the receiver. It achieves precise measurement of time of arrival (TOA) in a radar system and expands the scalabilit

👥 作者与机构

Chang-Ming Lai, Jen-Ming Wu, Po-Chiun Huang, Ta-Shun Chu

National Tsing Hua University, Hsinchu, Taiwan