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首页> 外文期刊>Journal of Infrared, Millimeter and Terahertz Waves >Comparison of Free Space Measurement Using a Vector Network Analyzer and Low-Cost-Type THz-TDS Measurement Methods Between 75 and 325 GHz
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Comparison of Free Space Measurement Using a Vector Network Analyzer and Low-Cost-Type THz-TDS Measurement Methods Between 75 and 325 GHz

机译：使用矢量网络分析仪和75到325 GHz之间的低成本型THz-TDS测量方法的自由空间测量比较

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摘要

Specifications of two measurement systems, free space measurement using a vector network analyzer and low-cost-type terahertz time-domain spectroscopy using a multimode laser diode, have been compared in the frequency region of millimeter/sub-THz waves. In the comparison, accuracy, cost, measurement time, calculation time, etc. were considered. Four samples (Rexolite, RO3003, Ultralam 3850HT-design, and L1000HF) were selected for the comparison of the specifications of the two methods. The acquired data was used to compute the complex permittivity of measured materials. The extracted results by free space measurement agreed well to the ones obtained by low-cost-type terahertz time-domain spectroscopy. This result proves free space measurement that can be assessed as a new method of material characterization in the sub-THz region successfully worked. Furthermore, free space measurement was proved to be suitable for a measurement in a narrow frequency range. On the other hand, low-cost-type terahertz time-domain spectroscopy has features not only low cost but also measurement capability in wide frequency range.
机译：在毫米/亚ZZ波的频率区域比较了两种测量系统的两个测量系统，使用矢量网络分析仪和低成本型的太赫兹时域光谱法测量，使用多模激光二极管进行比较。在比较，准确性，成本，测量时间，计算时间等。选择四个样品（戒石，RO3003，UltraLAM 3850Ht-Design和L1000HF）进行两种方法的规格进行比较。所获取的数据用于计算测量材料的复杂介电常数。通过可自由空间测量的提取结果与低成本型太赫兹时域光谱法所获得的那些相同。该结果证明了可以评估的可用空间测量作为成功工作的子THz区域中的一种新的材料表征方法。此外，证明了自由空间测量适用于窄频率范围内的测量。另一方面，低成本型太赫兹时域光谱学不仅具有低成本，而且在宽频范围内具有测量能力。

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