langasite作为SAW基RFID和高温传感系统材料的表征

2009 IEEE MTT-S International Microwave Workshop on Wireless Sensing, Local Positioning, and RFID Pub Date : 2009-11-03 DOI:10.1109/IMWS2.2009.5307882

E. Mayer, I. Shrena, D. Eisele, J. Bardong, M. Schmitt, L. Reindl

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引用次数: 2

摘要

对于在高温下工作的基于SAW的ID标签和传感器的衬底材料langasite(一种压电晶体)，SAW的传播参数已经确定为温度的函数。这些参数是相速度、传播损耗和机电耦合系数。研究了欧拉角分别为(0°，138.5°，26.6°)和(0°，30.2°，26.6°)的两种晶体切割。SAW参数是通过测量langasite芯片上延迟线的传递函数获得的，频率范围为150 MHz至1 GHz，温度范围为室温至750℃

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Characterization of langasite as a material for SAW based RFID and sensing systems at high temperatures

For langasite, a piezocrystal used as substrate material for SAW-based ID tags and sensors operating at high temperatures, the parameters of SAW propagation have been determined as a function of temperature. These parameters are the phase velocity, propagation loss, and electromechanical coupling coefficient. Two crystal cuts have been studied, with Euler angles (0°, 138.5°, 26.6°) and (0°, 30.2°, 26.6°). The SAW parameters were obtained from the measurements of transfer functions for delay lines on langasite chips at frequencies ranging from 150 MHz to 1 GHz and at temperatures from room temperature up to 750°C

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2009 IEEE MTT-S International Microwave Workshop on Wireless Sensing, Local Positioning, and RFID

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