利用1位ΔΣ TDC实现相位域过采样测距的3.5-4GHz FMCW雷达收发器设计

Technical Papers of 2014 International Symposium on VLSI Design, Automation and Test Pub Date : 2014-04-28 DOI:10.1109/VLSI-DAT.2014.6834890

Wei Zhang, Yizhi Han, Fei Chen, Bo Zhou, Xican Chen, W. Rhee, Zhihua Wang

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引用次数: 6

摘要

采用相位域过采样测距方法，在0.18μm CMOS上实现了3.5-4GHz FMCW雷达收发器，用于短距离无线传感器网络(WSN)应用。为了克服传统FMCW雷达在带宽和测距分辨率之间的权衡，利用数字相位旋转器和1位ΔΣ TDC实现过采样相域测距，实现了宽捕获范围和精细分辨率。在FMCW收发器硬件样机中验证了所提出的测距方法，并在星载调制测量的基础上验证了亚厘米测距能力的可行性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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A 3.5–4GHz FMCW radar transceiver design with phase-domain oversampled ranging by utilizing a 1-bit ΔΣ TDC

A 3.5-4GHz FMCW radar transceiver employing a phase-domain oversampled ranging method is implemented in 0.18μm CMOS for short-range wireless sensor network (WSN) applications. To overcome the tradeoff between bandwidth and ranging resolution in the conventional FMCW radar, a digital phase rotator and a 1-bit ΔΣ TDC are utilized to realize the oversampled phase-domain ranging, achieving both wide capture range and fine resolution. The proposed ranging method is verified in the prototype FMCW transceiver hardware and the feasibility of sub-cm ranging capability is also demonstrated based on on-board modulation measurement.

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Technical Papers of 2014 International Symposium on VLSI Design, Automation and Test

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