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A Nonlinear FEM Model to Calculate Third-Order Harmonic and Intermodulation in TC-SAW Devices

  • Nonlinearities in Temperature Compensated SAW (TC-SAW) devices in the 2 GHz range are investigated using a nonlinear finite element model by simultaneously considering both third-order intermodulation distortion (IMD3)and third harmonic (H3). In the employed perturbation approach, different contributions to the total H3, the direct and indirect contribution, are discussed. H3 and IMD3 measurementsNonlinearities in Temperature Compensated SAW (TC-SAW) devices in the 2 GHz range are investigated using a nonlinear finite element model by simultaneously considering both third-order intermodulation distortion (IMD3)and third harmonic (H3). In the employed perturbation approach, different contributions to the total H3, the direct and indirect contribution, are discussed. H3 and IMD3 measurements were fitted simultaneously using scaling factors for SiO 2 film and Cu electrode nonlinear material tensors in TC-SAW devices. We employ a P-Matrix simulation as intermediate step: Firstly, measurement and nonlinear P-Matrix calculations for finite devices are compared and coefficients of the P-Matrix simulation are determined. The nonlinear tensor data of the different materials involved in periodic nonlinear finite element method (FEM) computations are optimized to fit periodic P-Matrix calculations by introducing scaling factors. Thus, the contribution of different materials to the nonlinear behavior of TC-SAW devices is obtained and the role of materials is discussed.show moreshow less

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Metadaten
Document Type:Conference Proceeding
Conference Type:Konferenzartikel
Zitierlink: https://opus.hs-offenburg.de/5716
Bibliografische Angaben
Title (English):A Nonlinear FEM Model to Calculate Third-Order Harmonic and Intermodulation in TC-SAW Devices
Conference:IUS 2018: IEEE International Ultrasonics Symposium, 22-25 October 2018, Kobe, Japan
Author:Vikrant Chauhan, Amelie Hagelauer, Markus Mayer, Werner Ruile, Elena MayerStaff Member, Andreas MayerStaff MemberGND, D. Moellenbeck, Thomas Ebner, Karl Wagner, Ingo Bleyl
Year of Publication:2018
Publisher:IEEE
Page Number:4
Parent Title (English):2018 IEEE International Ultrasonics Symposium (IUS)
ISBN:978-1-5386-3425-7 (Electronic)
ISBN:978-1-5386-3426-4 (Print on Demand)
ISSN:1948-5727 (Electronic)
ISSN:1948-5719 (Print on Demand)
DOI:https://doi.org/10.1109/ULTSYM.2018.8580153
URL:https://ieeexplore.ieee.org/document/8580153
Language:English
Inhaltliche Informationen
Institutes:Fakultät Wirtschaft (W)
Institutes:Bibliografie
Tag:Finite element analysis; Harmonic analysis; Lithium niobate; Metallization; Substrates
Formale Angaben
Open Access: Closed 
Licence (German):License LogoUrheberrechtlich geschützt