D. Neculoiu, G. Konstantinidis, K. Mutamba, A. Takacs, D. Vasilache, C. Sydlo, T. Kostopoulos, A. Stavrinidis, A. Muller
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Electromagnetic modeling of micromachined GaN thin films for FBAR applications
The paper presents a new electromagnetic modeling approach for FBAR structures that integrates the piezoelectric/acoustic effects into a commercial Zeland IE3D electromagnetic simulator. An analytic dispersion model describes the piezoelectric material frequency dependent effective permittivity. Several GaN based test structures were fabricated using bulk micromachining technologies. From microwave measurements the model parameters were extracted.
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