用于类vna s参数测量的校准和频率可跟踪的d波段FMCW雷达

T. Jaeschke, S. Kueppers, N. Pohl, J. Barowski
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引用次数: 12

摘要

本文提出了一种d波段调频连续波(FMCW)雷达系统和一种用于类矢量网络分析仪(VNA) s参数测量的信号处理链。雷达传感器覆盖超宽56GHz (126GHz-182GHz, 36.4%)扫描带宽,可配备标准WM-1651 [1] (WR-6.5)波导法兰。为了实现测量级的相位稳定性,引入了级联多相锁环(PLL)频率可跟踪参考时钟的概念,并提出了系统稳定性测量方法。最后,提供了一个FMCW雷达校准概念,允许使用经济高效的宽带FMCW雷达传感器进行复杂(幅度和相位)s参数测量。为了演示已实现的系统性能和该方法的潜力,介绍了材料特性测量,并将其与带有波导扩展器的传统VNA测量设备进行了比较。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Calibrated and Frequency Traceable D-Band FMCW Radar for VNA-like S-Parameter Measurements
In this paper a D-band frequency modulated continuous wave (FMCW) radar system and a signal processing chain for vector network analyzer(VNA)-like S-parameter measurements are presented. The radar sensor covers an ultra-wide 56GHz (126GHz–182GHz, 36.4%) sweep bandwidth and can be equipped with a standard WM-1651 [1] (WR-6.5) waveguide flange. To achieve measurement-grade phase stability a cascaded multi-phase-locked-loop (PLL) frequency traceable reference clock concept is introduced and system stability measurements are presented. Finally, a FMCW radar calibration concept is provided to allow complex (magnitude and phase) S-parameter measurements with cost-effective wide-band FMCW radar sensors. To demonstrate the achieved system performance and the potential of this approach, material characterization measurements are presented and compared to conventional VNA measurement equipment with waveguide extenders.
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