Electrode Mass Loading Effects on Different Piezoelectric Substrates for Saw Delay Lines: A Comparative FEM Analysis

• Autorzy: George Sheeja P. , Isaac Johney , Philip Jakob

Identyfikatory

DOI

10.24425/aoa.2022.140735

• Języki publikacji: EN

Abstrakty

EN

Several modelling techniques are currently available to analyse the efficiency of inter-digital transducers (IDTs) fabricated on piezoelectric substrates for producing surface acoustic wave (SAW) devices. Impulse response method, equivalent circuit method, coupling of modes, transmission matrix method, and numerical techniques are some of the popular ones for this. Numerical techniques permit modelling to be carried out with any number of finger electrode pairs with required boundary conditions on any material of interest. In this work, we describe numerical modelling of SAW devices using ANSYS to analyse the effect of mass loading, a major secondary effect of IDTs on the performance of SAW devices. The electrode thickness of the IDT influences the resonance frequency of the SAW delay line. The analysis has been carried out for different electrode materials, aluminium, copper, and gold, for different substrate materials, barium titanate (BaTiO₃), X-Y lithium niobate (LiNbO₃), lithium tantalate (LiTaO₃), and the naturally available quartz. The results are presented and discussed.

Słowa kluczowe

EN

inter-digital transducers; surface acoustic wave devices; finite element analysis; numerical modelling and simulation; ANSYS

• Wydawca: Instytut Podstawowych Problemów Techniki PAN ; Komitet Akustyki PAN ; Polskie Towarzystwo Akustyczne
• Czasopismo: Archives of Acoustics
• Rocznik: 2022
• Tom: Vol. 47, No. 1
• Strony: 89--95
• Opis fizyczny: Bibliogr. 29 poz., fot., rys., tab., wykr.

Twórcy

autor

George Sheeja P.

• Department of Electronics, College of Engineering Chengannur, Kerala, India
• Department of Instrumentation, CUSAT Kochi, Kerala, India

autor

Isaac Johney

• Department of Instrumentation, CUSAT Kochi, Kerala, India

autor

Philip Jakob

• Amaljyothi College of Engineering Kanjirappally, Kottayam, Kerala, India

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