基于微带贴片天线的微流控传感器研究  

Research on Microfluidic Sensor Based on Microstrip Patch Antenna

作　　者：韩雪云 周应平 李肖松 马中军 彭玉峰 HAN Xue-yun;ZHOU Ying-ping;LI Xiao-song;MA Zhong-jun;PENG Yu-feng(College of Electronic and Electric Engineering,Henan Normal University,Xinxiang 453007,China;Key Laboratory of Photoelectric Sensing Integrated Application of Henan Province,Xinxiang 453007,China;School of Environment,Henan Normal University,Xinxiang 453007,China)

机构地区：[1]河南师范大学电子与电气工程学院,新乡453007 [2]河南省光电传感集成应用重点实验室,新乡453007 [3]河南师范大学环境学院,新乡453007

出　　处：《微波学报》2022年第4期72-75,100,共5页Journal of Microwaves

基　　金：河南省科技攻关项目(212102210218,202102210316),河南省教育厅高等学校重点科研项目(22A510007,22A430025)。

摘　　要：食用油经高温加热后,其相对介电常数和质量会发生改变,测量食用油的相对介电常数可以检测其质量。文中提出了一种检测食用油质量的新型微带贴片天线传感器,通过测量输入反射系数的谐振频率的共振偏移来测定不同介电常数的食用油,工作中心频点为1.43 GHz和2.68 GHz。该设计基于谐振方法,采用基板集成波导结构结合1~3.2 GHz工作频率的五角形缝隙天线,可提供最佳传感精度。该装置可以检测不同介电常数的油脂类液体,测量的相对介电常数是复介电常数的真实部分,范围从2.41到2.83。因此,所提出的贴片微流控传感器可用于食用油质量的测定,具有良好的应用潜力。This paper presents a novel microstrip patch antenna sensor for detecting the quality of edible oil.The relative dielectric constant and the quality of edible oil will be changed after the edible oil is heated at high temperature,so the quality of edible oil can be detected by measuring its relative dielectric constant.The sensor is used to determine the edible oil with different dielectric constants by measuring the resonance shift of the resonance frequency of the input reflection coefficient,which operates around two central frequency points,1.43 GHz and 2.68 GHz.The sensor is designed based on a resonant approach to provide the best sensing accuracy and is implemented using a substrate integrated waveguide structure combined with a pentagonal slit antenna operating at 3.2 GHz.The device can detect greasy liquids with different dielectric constants,and the measured relative dielectric constant is the true part of the complex dielectric constant,ranging from 2.41 to 2.83.Thus,the proposed patch microfluidic sensor can be well used for the determination of edible oil quality and has a great potential for applications.

关 键 词：微带贴片天线 传感器 谐振频率 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置] TS227[自动化与计算机技术—控制科学与工程] TN820[轻工技术与工程—粮食、油脂及植物蛋白工程]