TY - CHAP U1 - Konferenzveröffentlichung A1 - Mayer, Markus A1 - Ruile, Werner A1 - Johnson, John A1 - Kiwitt, Jürgen A1 - San Jose, Romeo A1 - Schmidhammer, Edgar A1 - Bleyl, Ingo A1 - Wagner, Karl A1 - Mayer, Andreas A1 - Mayer, Elena T1 - Application of a rigorous nonlinear P-matrix method to the simulation of third order intermodulation in test devices and duplexers T2 - 2014 IEEE International Ultrasonics Symposium N2 - Recently a P-matrix and COM formalism was presented, which predicts third order intermodulation (IMD3) and triple beat with good accuracy and needs only a single nonlinearity constant. This formalism describes frequency dependence correctly. In this work the dependence of this nonlinearity constant on metalization ratio is investigated for aluminum metalization on LiTaO 3 (YXl)/42°. By comparison to test devices the nonlinearity constant is shown to be largely independent of metalization ratio. The nonlinear effect, however, strongly depends on metalization ratio, which is well described by the model. The linearity of a duplexer is optimized by reduction of metalization ratio and redesign of Tx branch topology. KW - Ultraschall KW - Zwischenmodulation Y1 - 2014 SN - 1051-0117 SS - 1051-0117 SN - 978-1-4799-7049-0 (Elektronisch) SB - 978-1-4799-7049-0 (Elektronisch) SN - 978-1-4799-7048-3 (DVD) SB - 978-1-4799-7048-3 (DVD) U6 - https://doi.org/10.1109/ULTSYM.2014.0193 DO - https://doi.org/10.1109/ULTSYM.2014.0193 SP - 787 EP - 790 PB - IEEE ER -