Antenna-resonator integrated wireless passive temperature sensor based on low-temperature co-fired ceramic for harsh environment
Antenna-resonator integrated wireless passive temperature sensor based on low-temperature co-fired ceramic for harsh environment
复制标题
适用于恶劣环境的基于低温共烧陶瓷的天线谐振器集成无线无源温度传感器
DOI：
10.1016/j.sna.2015.10.052
复制
发表时间：
2015-12-01
影响因子：
4.6
通讯作者：
Xiong, Jijun
中科院分区：
文献类型：
--
作者：
Tan, Qiulin;Wei, Tanyong;Xiong, Jijun
提出了一种基于低温共烧陶瓷（LTCC）的谐振器-天线集成微带天线温度传感器，其介电常数随温度单调变化。首先详细分析了传感器的尺寸设计过程，并结合标准LTCC工艺，采用15层绿色胶带制作了传感器。为了询问传感器，使用高频结构模拟器软件设计并优化了具有相对较大带宽的共面波导（CPW）馈电微带天线，然后通过丝网印刷工艺在氧化铝陶瓷上制作。然后在开发的高温测量系统上对传感器进行测试。针对原始检测扫频信号难以区分的问题，提出了一种时域（T-D）选通方法滤除背景信号。在30 mm阅读距离处，发现提取的峰值频率随着温度的升高线性降低至400 ℃以内，测量灵敏度为0.24 MHz/℃。同时，天线的极性被发现有一个显着的影响读出信号。最后，对于所介绍的T-D选通方法，本研究分析了当使用高增益询问天线时，传感器可以在长距离处被感知。该传感器可用于恶劣环境下的温度监测。(C)2015 Elsevier B. V.版权所有。
This paper proposes a resonator-antenna integrated microstrip antenna temperature sensor based on a low-temperature co-fired ceramic (LTCC), whose permittivity varies monotonously with the temperature. The dimensional design process was first analyzed in detail, and by combining the standard LTCC technology, the sensor was fabricated using 15 layers of a green tape. To interrogate the sensor, a coplanar waveguide (CPW)-fed microstrip antenna, possessing a relatively large bandwidth, was designed and optimized using high frequency structure simulator software, and then fabricated on alumina ceramic through a screen-printing process. The sensor was then tested on a developed high-temperature measurement system. Because the original detected sweep signal was difficult to distinguish, a time-domain (T-D) gating method for filtering a background signal was introduced. The extracted peak frequency was found to decrease linearly with an increase in temperature to within 400 degrees C at a 30-mm reading distance, with a measurement sensitivity of 0.24 MHz/degrees C. Simultaneously, the antenna polarity was found to have a significant influence on the readout signal. Finally, for the introduced T-D gating method, this study analyzes that the sensor can be sensed at a long distance when using a high-gain interrogation antenna. It is expected that the proposed sensor can be used in monitoring the temperature in a harsh environment. (C) 2015 Elsevier B.V. All rights reserved.