| 声表面波免疫传感器高频检测系统设计 |
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| 引用本文： | 李晓雨,殷嘉伟,石幸圆,刘玉琪,孙科学.声表面波免疫传感器高频检测系统设计[J].压电与声光,2020,42(5):589-592. |
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| 作者姓名： | 李晓雨 殷嘉伟 石幸圆 刘玉琪 孙科学 |
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| 作者单位： | (1.南京邮电大学 电子与光学工程学院,江苏 南京 210023;2. 射频集成与微组装技术国家地方联合工程实验室, 江苏 南京 210023) |
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| 基金项目： | 国家自然科学基金资助项目（11304160）；江苏省大学生创新创业训练计划基金资助项目（SYB2019008）；江苏省研究生实践创新计划基金资助项目（SJCX19_0271）；南京邮电大学国家自孵化基金资助项目（NY220013） |
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| 摘 要： | 声表面波（SAW）免疫传感器是一种新型生物传感器，该文设计并实现了一个高频的SAW免疫传感器检测系统。该系统利用锁相环控制输出信号频率对输入信号频率跟踪锁定，通过测量频率变化量即能完成对免疫传感器的检测，通过液晶屏显示结果。测试结果表明，该检测系统能准确测量频率156~162 MHz内的传感信号，系统的最大测量误差仅0.85%，满足SAW免疫传感器高频检测领域的工程实际需要。
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| 关 键 词： | 锁相环(PLL) 声表面波免疫传感器 直接数字式频率合成器(DDS) 高频 |
Design of High frequency Detection System for SAW Immunosensor |
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| LI Xiaoyu,YIN Jiawei,SHI Xingyuan,LIU Yuqi,SUN Kexue.Design of High frequency Detection System for SAW Immunosensor[J].Piezoelectrics & Acoustooptics,2020,42(5):589-592. |
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| Authors: | LI Xiaoyu YIN Jiawei SHI Xingyuan LIU Yuqi SUN Kexue |
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| Affiliation: | (1.College of Electronic and Optical Engineering, Nanjing University of Posts and Telecommunications,Nanjing 210023,China;;2.Nation Local Joint Project Engineering Lab. of RF Integration & Micropackage,Nanjing 210023,China) |
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| Abstract: | The surface acoustic wave(SAW) immunosensor is a new kind of biosensor. A high frequency detection system for SAW immune sensor is designed in this work. The system uses the phase locked loop(PLL) to control the output signal frequency and the input signal frequency tracking lock. By measuring the frequency change, the system can complete the detection of the acoustic surface wave immunosensor, and the results are displayed on the LCD screen. The test results show that the detection system can accurately measure the sensing signal within the frequency range of 156~162 MHz, and the maximum measurement error of the system is only 0.85%, which meets the actual engineering needs and can be widely used in the high frequency detection field of surface acoustic wave immunosensor. |
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| Keywords: | phase locked loop(PLL) surface acoustic wave immunosensor direct digital synthesizer(DDS) high frequency |
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