Rigorous COM and P-matrix approaches to the simulation of third-order intermodulation distortion and triple beat in SAW filters

Mayer, Markus; Ruile, W.; Johnson, J.E.; Bleyl, Ingo; Wagner, K.; Mayer, Andreas; Mayer, Elena

doi:10.1109/ultsym.2013.0501

Cited by 21 publications

(26 citation statements)

References 14 publications

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“…A simulation model of nonlinear effects in SAW components is required in order to better characterize, model, and minimize the nonlinearities. The generation of IMD3 caused by the nonlinearity of SAW devices has been studied by several authors based on simplified models such as P-matrix [3], [4], coupling of modes [5], [6], or the Mason model [7], and more recently a model based on the finite element method (FEM) [1], [2], [8]. Fig.…”

Section: Investigation On Third-order Intermodulationmentioning

confidence: 99%

“…Using the electroelasticity theory, it was shown that a nonlinear P-matrix simulation model using a single frequencyindependent effective nonlinearity constantĈ(η), which may depend on the metallization ratio (η), can predict the IMD3 of a layered system very well [3], [5], [8]. In [2] and [8], this very same effective nonlinear constant was theoretically evaluated using a FEM approach, where linear fields, associated with input tones, are combined with the nonlinear material tensor data to obtain the sources of nonlinear fields.…”

Section: Investigation On Third-order Intermodulationmentioning

confidence: 99%

“…We consider the case of IMD3 at 2 f 1 − f 2 for two tones applied at f 1 and f 2 . The nonlinear P-matrix equation at 2 f 1 − f 2 can be written by extending the linear P-matrix by acoustic and electric nonlinear source terms [3], [4] ⎛…”

Section: A Nonlinear P-matrix Simulation Modelmentioning

confidence: 99%

“…s 1/2 are the nonlinear acoustic sources emitting to the left and right ports and s u are the electric current sources. s 1 and s 2 as referenced in [3], can be related toĈ(η) as…”

Section: A Nonlinear P-matrix Simulation Modelmentioning

confidence: 99%

“…For finite tracks, the nonlinear P-matrixes in (1) are cascaded, thus calculating the series and parallel resonators of an L-section filter. The single nonlinear constant used in our P-matrix simulation should be regarded as an effective constant including all the nonlinear effects [3], [4]. This is only justified by the good agreement between measurement and simulation in the frequency range we considered here.…”

Section: A Nonlinear P-matrix Simulation Modelmentioning

confidence: 99%

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Investigation on Third-Order Intermodulation Distortions Due to Material Nonlinearities in TC-SAW Devices

Chauhan

Mayer²,

Mayer

et al. 2018

IEEE Trans. Ultrason., Ferroelect., Freq. Contr.

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Nonlinearity can give rise to intermodulation distortions in surface acoustic wave (SAW) devices operating at high input power levels. To understand such undesired effects, a finite element method (FEM) simulation model in combination with a perturbation theory is applied to find out the role of different materials and higher order nonlinear tensor data for the nonlinearities in such acoustic devices. At high power, the SAW devices containing metal, piezoelectric substrate, and temperature compensating (TC) layers are subject to complicated geometrical, material, and other nonlinearities. In this paper, third-order nonlinearities in TC-SAW devices are investigated. The materials used are LiNbO-rot128YX as the substrate and copper electrodes covered with a SiO film as the TC layer. An effective nonlinearity constant for a given system is determined by comparison of nonlinear P-matrix simulations to third-order intermodulation measurements of test filters in a first step. By employing these constants from different systems, i.e., different metallization ratios, in nonlinear periodic P-matrix simulations, a direct comparison to nonlinear periodic FEM-simulations yields scaling factors for the materials used. Thus, the contribution of the different materials to the nonlinear behavior of TC-SAW devices is obtained and the role of metal electrodes, substrate, and TC film are discussed in detail.

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Section: Investigation On Third-order Intermodulationmentioning

confidence: 99%

Section: Investigation On Third-order Intermodulationmentioning

confidence: 99%

Section: A Nonlinear P-matrix Simulation Modelmentioning

confidence: 99%

“…s 1/2 are the nonlinear acoustic sources emitting to the left and right ports and s u are the electric current sources. s 1 and s 2 as referenced in [3], can be related toĈ(η) as…”

Section: A Nonlinear P-matrix Simulation Modelmentioning

confidence: 99%

Section: A Nonlinear P-matrix Simulation Modelmentioning

confidence: 99%

See 3 more Smart Citations

Investigation on Third-Order Intermodulation Distortions Due to Material Nonlinearities in TC-SAW Devices

Chauhan

Mayer²,

Mayer

et al. 2018

IEEE Trans. Ultrason., Ferroelect., Freq. Contr.

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Application of the Input-Output Equivalent Sources Method for the Simulation of Nonlinearities in TC-SAW Resonators and Filters

Gonzalez-Rodriguez

Collado

Mateu

et al. 2022

2022 IEEE MTT-S International Conference on Microwave Acoustics and Mechanics (IC-MAM)

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A good understanding of the nonlinearity mechanism in SAW devices is a crucial aspect in the filter stage. Nonlinear intermodulation distortion (IMD) may lead to spurious signals falling into the receiver band and limiting its sensitivity. Identify the dominant source of nonlinearity specially at high-power is important for a good prediction of the filter nonlinear response. In this work, third-order intermodulation (IMD3) products in TC-SAW (Temperature Compensated-SAW) devices are presented. Within this work we apply the previously developed Input-Output Equivalent Sources (IOES) method to compute nonlinearities of more complex structures such as ladder-type and CRF (Coupled Resonator Filter) filter structures.

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Influence of Orientation Angle of IDT Electrode on Third-Order Harmonics of SAW Devices

Nakagawa,

Kyoya,

Shimizu

2023

2023 IEEE International Ultrasonics Symposium (IUS)

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Rigorous COM and P-matrix approaches to the simulation of third-order intermodulation distortion and triple beat in SAW filters

Cited by 21 publications

References 14 publications

Investigation on Third-Order Intermodulation Distortions Due to Material Nonlinearities in TC-SAW Devices

Investigation on Third-Order Intermodulation Distortions Due to Material Nonlinearities in TC-SAW Devices

Application of the Input-Output Equivalent Sources Method for the Simulation of Nonlinearities in TC-SAW Resonators and Filters

Influence of Orientation Angle of IDT Electrode on Third-Order Harmonics of SAW Devices

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