Haresh M. Pandya, M.U. Sharma, A.T. Nimal, K.B. Rajesh
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引用次数: 1
Abstract
In recent years a big spurt has been observed in the usage and applications of Surface Acoustic Wave(SAW) devices as sensors not only for the detection of physical and chemical quantities but also as environmental biosensors for detecting volatiles, toxic agents, explosives and narcotics. The design of such sensors assumes importance as the technology enables reproducibility, reliability, portability and cost-effective sensing in real time. This paper presents the frequency response of a 300 MHz ST-Quartz SAW delay line device fabricated with uniform IDTs. Based on the first order Impulse response model and employing a unique custom made MATLAB algorithm, the device is accurately modelled. The results obtained are analyzed to ultimately help in the effective design, development and modelling of such devices as application specific sensors. Comparison of modelled and simulated results with experimental device response shows good agreement.
近年来，表面声波(SAW)器件不仅作为检测物理和化学量的传感器，而且作为检测挥发物、毒物、爆炸物和麻醉品的环境生物传感器，在使用和应用方面有了很大的发展。这种传感器的设计具有重要意义，因为该技术能够实现再现性，可靠性，便携性和成本效益的实时传感。本文介绍了用均匀IDTs制作的300 MHz st -石英SAW延迟线器件的频率响应。基于一阶脉冲响应模型，采用独特的定制MATLAB算法，对该器件进行了精确建模。所获得的结果进行了分析，以最终帮助有效的设计，开发和此类设备的建模，如应用特定的传感器。模型和仿真结果与实验装置的响应比较，结果吻合较好。
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