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首页> 外文期刊>IEEE sensors journal >Compact Size, and Highly Sensitive, Microwave Sensor for Non-Invasive Measurement of Blood Glucose Level
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Compact Size, and Highly Sensitive, Microwave Sensor for Non-Invasive Measurement of Blood Glucose Level

机译：紧凑的尺寸，非常灵敏，微波传感器，用于血糖水平的非侵入性测量

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摘要

None-invasive blood glucose measurement enables effective diagnosis and treatment of diabetic patients. The existing microwave sensors suffer from low sensitivity and large size. This article presents a highly sensitive and compact size non-invasive microwave sensor for real-time blood glucose measurements. We have developed a new sensing technique using directly connected Branch Line Coupler and Split Ring Resonators. This technique significantly improves the sensitivity by mitigating the limited coupling between transmission lines and resonators. In addition, using Split Ring Resonators reduces the sensor size due to capacitive and inductive effects, which are loaded to the Branch Line Coupler. The proposed sensing function is based on shifting the transmission notch frequency in coupled arm of the Branch Line Coupler, which is caused by loading the Split Ring Resonators with varying glucose concentration. A prototype sensor is fabricated and successfully tested using several glucose concentrations in deionized water. Experimental results demonstrate 0.72 MHz/mgdL(-1) measurement sensitivity, which is higher in comparison with available sensors in PCB technology. The prototype sensor size is 3.5 x 3.5 x 0.16 cm(3).
机译：无侵袭性血糖测量能够有效地诊断和治疗糖尿病患者。现有的微波传感器患有低灵敏度和大尺寸。本文介绍了一种高度敏感和紧凑的无侵入式微波传感器，用于实时血糖测量。我们开发了一种新的传感技术，使用直接连接的分支线路耦合器和分流环谐振器。该技术通过减轻传输线和谐振器之间的有限耦合来显着提高灵敏度。另外，使用分流环谐振器由于电容和电感效果而降低了传感器尺寸，该电容效果加载到分支线路耦合器。所提出的传感功能基于在分支线耦合器的耦合臂中移位传输凹口频率，这是由加载具有不同葡萄糖浓度的分开环谐振器引起的。制造原型传感器并在去离子水中使用几种葡萄糖浓度成功测试。实验结果表明0.72MHz / MgDL（-1）测量灵敏度，与PCB技术中的可用传感器相比较高。原型传感器尺寸为3.5 x 3.5 x 0.16厘米（3）。

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