Lurz F, Lindner S, Linz S, Mann S, Weigel R, Kölpin A (2017)
Publication Type: Journal article
Publication year: 2017
Publisher: IEEE
Book Volume: 66
Pages Range: 974-984
Journal Issue: 5
Surface acoustic wave (SAW) resonators are used for a broad range of wireless sensing applications, some of them having high demands on the resolution as well as the measurement update rate. This paper presents a new interrogation method for precise and fast frequency determination of passive SAW resonators based on instantaneous frequency measurement (IFM) by a low-cost Six-Port interferometer. By using a delay line, the frequency measurement is reduced to a phase measurement that can be instantaneously evaluated by the Six-Port network. No complex signal processing is necessary providing high update rates and low hardware costs. An in-depth analysis of the system concept and its building blocks is presented and the advantages as well as the limitations are discussed and compared to the current state-of-the-art. Finally, a demonstrator in the 2.4 GHz frequency band shows the feasibility and the precision of the concept with measurement times of only a few microseconds.
APA:
Lurz, F., Lindner, S., Linz, S., Mann, S., Weigel, R., & Kölpin, A. (2017). High-Speed Resonant Surface Acoustic Wave Instrumentation Based on Instantaneous Frequency Measurement. IEEE Transactions on Instrumentation and Measurement, 66(5), 974-984. https://dx.doi.org/10.1109/TIM.2016.2642618
MLA:
Lurz, Fabian, et al. "High-Speed Resonant Surface Acoustic Wave Instrumentation Based on Instantaneous Frequency Measurement." IEEE Transactions on Instrumentation and Measurement 66.5 (2017): 974-984.
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