Determination of sugar concentration in aqueous solutions using ultra-wideband microwave impedance spectroscopy
Determination of sugar concentration in aqueous solutions using ultra-wideband microwave impedance spectroscopy
复制标题
使用超宽带微波阻抗谱测定水溶液中的糖浓度
DOI：
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发表时间：
2013
期刊：
影响因子：
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通讯作者：
D. Kissinger
中科院分区：
文献类型：
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作者：
G. Guarin;M. Hofmann;R. Weigel;G. Fischer;D. Kissinger
本文描述了结合伪随机噪声序列和微带传感器来测量水溶液中葡萄糖的概念。微带传感器的传播特性是取决于所接触的葡萄糖浓度的变量。这些是使用最大长度序列作为频率的函数来测量的，与其他基于频率扫描的方法相比，提供更短的测量时间。所提出的系统使用频率范围为 23 MHz 至 12 GHz 的低功率微波能量。通过所实施的系统，可以通过检测微带传感器上的相位变化来估计从 5000 mg/dl 到 100 mg/dl 的葡萄糖浓度。该系统未来的一个潜在应用是以无创方式测量血糖水平。
This paper describes the concept of combining pseudo random noise sequences and a microstrip sensor for measurement of glucose in aqueous solutions. The propagation characteristics of the microstrip sensor are variables dependent of the glucose concentration in contact with. These are measured as a function of the frequency using a maximal length sequence that in contrast with other frequency sweep based methods, offers a shorter measurement time. The presented system uses low-power microwave energy over the frequency range between 23 MHz and 12 GHz. With the implemented system glucose concentrations from 5000 mg/dl to 100 mg/dl can be estimated by detecting the changes of phase on the microstrip sensor. One potential future application for this system is the measurement of blood glucose levels in a noninvasive way.