Archives of Acoustics, 43, 2, pp. 153–161, 2018
10.24425/122363

Comparative Modelling Studies of 400 MHz ST-X Quartz SAW Delay Lines for Potential Gas Sensing Applications

Venkatesan THIRUMAL
Chikkanna Government Arts College
India

Banupriya RAJU
Gobi Arts and Science College
India

Pandiyarajan GANDHI
Chikkanna Government Arts College
India

Haresh M. PANDYA
Chikkanna Government Arts College
India

Surface Acoustic Wave (SAW) devices like delay lines, filters, resonators etc., are nowadays extensively used as principal solid state components in many electronic applications and chemical vapour sensors. To bring out the best from these SAW devices, computational design and modelling are resorted too. The present paper proposes the modelling of 400 MHz ST-X Quartz based SAW delay line, by three models namely, Impulse Response Model (IRM), Crossed-field Equivalent Circuit Model (ECM) and Couplingof-Modes (COM) model. MATLAB is employed as a computational tool to model the experimental output of the SAW device. A comparative discussion of the modelled device results is also provided.
Keywords: SAWdelay line; impulse response model; equivalent circuit model; COM model; SAW sensors
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DOI: 10.24425/122363

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