A compact breath gas sensor system based on terahertz/millimeter-wave gas spectroscopy

IF 0.8 4区工程技术 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC

Frequenz Pub Date : 2022-09-26 DOI:10.1515/freq-2022-0131

N. Rothbart, K. Schmalz, R. Koczulla, H. Hübers

引用次数: 0

Abstract

Abstract We demonstrate a full-cycle breath gas sensor system based on terahertz/millimeter-wave gas spectroscopy. The sensor consists of a transmitter and receiver working around 250 GHz based on SiGe BiCMOS technology. Typical detection thresholds are in the ppm range depending on the respective molecule. The data analysis provides partial pressures of the investigated molecules by fitting of spectra which are measured by wavelength modulation. Beside the spectroscopic measurement and the data analysis, a full cycle of breath analysis includes the sampling and the conditioning of the sample tubes. The full cycle takes about 35 min per sample in average. As the system is compact and easy to operate, it allows for on-site analysis of breath samples in medical laboratories or hospitals.

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基于太赫兹/毫米波气体光谱的紧凑型呼吸气体传感器系统

摘要我们展示了一个基于太赫兹/毫米波气体光谱的全循环呼吸气体传感器系统。该传感器由一个基于SiGe BiCMOS技术在250 GHz左右工作的发射器和接收器组成。典型的检测阈值在ppm范围内，这取决于各自的分子。数据分析通过拟合通过波长调制测量的光谱来提供所研究分子的分压。除了光谱测量和数据分析外，呼吸分析的全周期还包括采样和样品管的调节。整个周期平均每个样本大约需要35分钟。由于该系统结构紧凑且易于操作，因此可以在医学实验室或医院对呼吸样本进行现场分析。

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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来源期刊

Frequenz 工程技术-工程：电子与电气

CiteScore

2.40

自引率

18.20%

发文量

审稿时长

3 months

期刊介绍： Frequenz is one of the leading scientific and technological journals covering all aspects of RF-, Microwave-, and THz-Engineering. It is a peer-reviewed, bi-monthly published journal. Frequenz was first published in 1947 with a circulation of 7000 copies, focusing on telecommunications. Today, the major objective of Frequenz is to highlight current research activities and development efforts in RF-, Microwave-, and THz-Engineering throughout a wide frequency spectrum ranging from radio via microwave up to THz frequencies. RF-, Microwave-, and THz-Engineering is a very active area of Research & Development as well as of Applications in a wide variety of fields. It has been the key to enabling technologies responsible for phenomenal growth of satellite broadcasting, wireless communications, satellite and terrestrial mobile communications and navigation, high-speed THz communication systems. It will open up new technologies in communications, radar, remote sensing and imaging, in identification and localization as well as in sensors, e.g. for wireless industrial process and environmental monitoring as well as for biomedical sensing.