Title

High Stable And Sensitive Orthogonal Frequency Coded Saw Tags And Sensors Using Unidirectional Idt And High Coupling Zero Tcf Substrates

Abstract

Surface acoustic waves (SAWs) have been applied in various electronic devices, e.g., different kinds of filters, stable high frequency oscillators, real time signal processing devices, convolvers and matched filters used in spread spectrum communication systems. To obtain the high-performance surface acoustic wave (SAW) devices, it is very important for the high-coupling SAW materials and interdigital transducer (IDT) to be made unidirectional ones (UIDT). OFC is the use of orthogonal frequencies to encode a signal, which spreads the signal bandwidth in a manner similar to a fixed M-ary frequency shift signal. In this papers, we propose the new configuration of the internal reflection type of unidirectional IDT (λ/4 types) with the super high coupling substrates of SiO 2/YX-LiNbO 3 with k 2=0.3 and zero Temperature Coefficient of Frequency (TCF). The above UIDT and substrates are applied to the low loss wide band filter, Tags and Sensors. The calculation results show the large wide-band width and very low insertion filters, tags and sensors without the degradation of the pulse response over the temperature by zero TCF substrates. © 2011 IEEE.

Publication Date

12-1-2011

Publication Title

IEEE International Ultrasonics Symposium, IUS

Number of Pages

814-817

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.1109/ULTSYM.2011.0199

Socpus ID

84869046976 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84869046976

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