A direct digital synthesis system for surface acoustic wave sensors

Proceedings of the 2001 IEEE International Frequncy Control Symposium and PDA Exhibition (Cat. No.01CH37218) Pub Date : 2001-06-06 DOI:10.1109/FREQ.2001.956271

K. Mitzner, E. Berkenpas, J. Sternhagen, M. Karlgaard, C. Wold, D. Galipeau

{"title":"A direct digital synthesis system for surface acoustic wave sensors","authors":"K. Mitzner, E. Berkenpas, J. Sternhagen, M. Karlgaard, C. Wold, D. Galipeau","doi":"10.1109/FREQ.2001.956271","DOIUrl":null,"url":null,"abstract":"Current designs for surface acoustic wave sensor system electronics are typically based on SAW oscillators, phase detectors, or phase-locked loops to measure changes in SAW velocity. The advantage of SAW oscillators is a high resolution frequency output as compared to phase systems which are more stable and can more easily provide amplitude information. Phase-locked loops offer advantages of both the SAW oscillator and phase detection systems but have the disadvantages of a fixed frequency range and the need for frequency counting circuitry. The objectives of this work were to study the performance of a direct digital synthesis based phase-locked loop system with the advantages of a programmable center frequency, elimination of the need for frequency counting circuitry, and tolerance to large SAW sensor insertion loss. The DDS system had a resolution of 4 Hz and a range of 80 to 120 MHz with 100 MHz SAW sensors in humidity and temperature sensing applications. This indicates that the DDS based PLL is a practical electronic system for SAW sensors.","PeriodicalId":369101,"journal":{"name":"Proceedings of the 2001 IEEE International Frequncy Control Symposium and PDA Exhibition (Cat. No.01CH37218)","volume":"56 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2001-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Proceedings of the 2001 IEEE International Frequncy Control Symposium and PDA Exhibition (Cat. No.01CH37218)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/FREQ.2001.956271","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}

引用次数: 2

Abstract

Current designs for surface acoustic wave sensor system electronics are typically based on SAW oscillators, phase detectors, or phase-locked loops to measure changes in SAW velocity. The advantage of SAW oscillators is a high resolution frequency output as compared to phase systems which are more stable and can more easily provide amplitude information. Phase-locked loops offer advantages of both the SAW oscillator and phase detection systems but have the disadvantages of a fixed frequency range and the need for frequency counting circuitry. The objectives of this work were to study the performance of a direct digital synthesis based phase-locked loop system with the advantages of a programmable center frequency, elimination of the need for frequency counting circuitry, and tolerance to large SAW sensor insertion loss. The DDS system had a resolution of 4 Hz and a range of 80 to 120 MHz with 100 MHz SAW sensors in humidity and temperature sensing applications. This indicates that the DDS based PLL is a practical electronic system for SAW sensors.

查看原文

微信好友朋友圈 QQ好友复制链接

本刊更多论文

表面声波传感器的直接数字合成系统

目前表面声波传感器系统的电子设计通常基于声表面波振荡器、相位检测器或锁相环来测量声表面波速度的变化。与相位系统相比，SAW振荡器的优点是高分辨率频率输出，相位系统更稳定，更容易提供幅度信息。锁相环提供SAW振荡器和相位检测系统的优点，但缺点是频率范围固定，需要频率计数电路。这项工作的目的是研究基于直接数字合成的锁相环系统的性能，该系统具有可编程中心频率的优点，消除了对频率计数电路的需求，以及对大SAW传感器插入损耗的容忍。DDS系统的分辨率为4 Hz，范围为80至120 MHz，在湿度和温度传感应用中具有100 MHz SAW传感器。这表明基于DDS的锁相环是一种实用的声表面波传感器电子系统。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文去求助

来源期刊

Proceedings of the 2001 IEEE International Frequncy Control Symposium and PDA Exhibition (Cat. No.01CH37218)

自引率

0.00%

发文量

期刊最新文献

Study of flicker phase modulation and amplitude modulation noise in field effect transistor amplifiers Direct bonded quartz resonators High-temperature acoustic loss in. AT-cut, BT-cut and SC-cut quartz resonators A 2.5 ppm fully integrated CMOS analog TCXO Engineering time: inventing the quartz wristwatch