highly sensitive reentrant cavity-microstrip patch antenna integrated wireless passive pressure sensor for high temperature applications
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2017
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Abstract
A novel reentrant cavity-microstrip patch antenna integrated wireless passive pressure sensor was proposed in this paper for high temperature applications. The reentrant cavity was analyzed from aspects of distributed model and equivalent lumped circuit model, on the basis of which an optimal sensor structure integrated with a rectangular microstrip patch antenna was proposed to better transmit/receive wireless signals. In this paper, the proposed sensor was fabricated with high temperature resistant alumina ceramic and silver metalization with weld sealing, and it was measured in a hermetic metal tank with nitrogen pressure loading. It was verified that the sensor was highly sensitive, keeping stable performance up to 300 kPa with an average sensitivity of 981.8 kHz/kPa at temperature 25°C, while, for high temperature measurement, the sensor can operate properly under pressure of 60–120 kPa in the temperature range of 25–300°C with maximum pressure sensitivity of 179.2 kHz/kPa. In practical application, the proposed sensor is used in a method called table lookup with a maximum error of 5.78%.
| Reference Key |
lu2017journalhighly
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|---|---|
| Authors | ;Fei Lu;Yanjie Guo;Qiulin Tan;Tanyong Wei;Guozhu Wu;Haixing Wang;Lei Zhang;Xiaowei Guo;Jijun Xiong |
| Journal | BMC infectious diseases |
| Year | 2017 |
| DOI |
10.1155/2017/3417562
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