Investigation of Thermal and Non-Linear Effects on the Performance of the Power Amplifier - BAW Filter - Chain in a LTE Transmitter

Stehr, U.; Stegner, J.; Hein, Matthias; Chauhan, Vikrant; Silva, V.; Weigel, Robert; Hagelauer, Amelie; Frank, A.; Michael, S.

doi:10.1109/ultsym.2018.8580055

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2023

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“…Linearity is one of the biggest research topics for RF SAW/ BAW duplexers and/or multiplexers, [1][2][3][4][5][6][7][8][9][10][11][12] and accurate and fast simulation tools are highly demanded for further suppression of nonlinear signal generation in these devices.…”

Section: Introductionmentioning

confidence: 99%

Perturbation analysis of nonlinear responses caused by transverse modes in AlN FBAR based on 2D scalar wave model

Wu,

Luo,

et al. 2023

Jpn. J. Appl. Phys.

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This paper describes perturbation analysis of nonlinear signal generation in apodized BAW devices using a multi-branch LCR equivalent circuit where all necessary simulation parameters are derived by the two-dimensional (2D) scalar wave model. Nonlinear signals are evaluated by adding two voltage sources representing nonlinear strain and electric flux, and their amplitude is determined by currents in the circuit for linear analysis. Simulated second and third harmonic responses agree well with experimental ones. The magnification mechanism of spurious resonances is also discussed.

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