التفاصيل البيبلوغرافية
| العنوان: |
基于阻抗负载原理的 SAWR传感研究. (Chinese) |
| Alternate Title: |
Research on SAWR Sensing Based on Impedance-Loaded Principle. (English) |
| المؤلفون: |
刘翔宇, 陈智军, 庞旗旗, 刘清睿, 薛昕烁 |
| المصدر: |
Piezoelectrics & Acoustooptics; Dec2024, Vol. 46 Issue 6, p840-859, 7p |
| Abstract (English): |
As a new type of passive wireless sensor, surface acoustic wave resonator has application potential in many occasions, but it depends on the direct effect of the object to be measured on the resonator itself. In order to expand the application range, the reactance sensitive element is utilized as one of the components of the impedance matching network, and the impedance-loaded resonator-type sensor based on the low-mismatch network is designed. The sensing principle and the implementation essence of the low-mismatch network are analyzed. Furthermore, the scheme including pre-bias device is proposed, which not only moves the resonant frequency of the resonator itself to the middle of the impedance measurement range, but also doubles the frequency sensitivity range. The low-mismatch network test circuit board is made and the theory is verified. Finally, the reasons for the deviation between the measurement and the theory are analyzed, and the improvement direction of the theoretical model is put forward. [ABSTRACT FROM AUTHOR] |
| Abstract (Chinese): |
声表面波谐振器型传感器作为一种新型的无源无线传感器, 在诸多场合具有应用潜力, 但依赖待测对 象对谐振器本身的直接作用。为拓展应用范围, 将电抗敏感元件作为阻抗匹配网络的元件之一, 设计了基于低失 配网络的阻抗负载谐振器型传感器, 并对其敏感原理及低失配网络的实现本质进行分析。在此基础上提出预偏置 器件方案, 不仅将谐振器自身谐振频率移至阻抗测量范围中间, 而且使频率敏感范围提升了一倍。实际制作低失 配网络测试电路板并验证其理论的正确性, 最后分析了实测结果与理论存在偏差的原因, 并提出了理论模型的改 进方向。 [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
Complementary Index |