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引用次数: 0
摘要
调制散射传感器基于小型天线的散射特性。它们的工作原理与射频识别（RFID）类似，但不需要无线电前端，而且射频识别（RFID）的工作范围有限，而调制散射传感器理论上可以达到任何距离，最远可达千米。通过适当改变天线传感器的负载阻抗，利用适当的电阻负载和电子开关调制输入/输入电磁波，从而传递信息。由于采用了合适的 MEM 开关，MST 传感器也可以在微波频段工作，其工作频率可达 100 GHz，而且操作简单、低侵入性和非常便宜。在这项工作中，将对 MST 传感器在不同工程场景中的开发和应用方面的演变和最新进展进行报告和评论。
An overview on Modulated Scattering Sensors and their applications
Modulated scattering sensors are based on the scattering properties of small antennas. They operate similarly to radio frequency identifier RFIDs but they don't require a radio front-end, and with respect to RFIDs, which are characterized by a limited operative range, MST sensors can theoretically reach any distance up to kilometres. The information is carried on by modulating an impinging/interrogating electromagnetic wave by properly change the load impedance of the antenna sensor, with suitable resistive loads and electronic switches. MST sensors can also operate at microwave frequency bands thanks to the introduction of suitable MEMs switches able to operate up to 100 GHz, moreover they are simple, low invasive and very cheap. In this work the evolution and some recent advancements in the development and application of MST sensors at different engineering scenarios will be reported and commented.
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