A new behavioral model for frequency domain analysis of power BAW filters

A new behavioral model for frequency domain analysis of power bulk acoustic wave (BAW) filters with sinusoidal excitation is proposed. It is built based on the measured S parameters and on the measured frequency characteristic of the second harmonic of the output reflected power, as functions of frequency and incident input power. This model gives better results than behavioral models build with nonlinear circuit elements for one tone driven filters, and can be used for multi-tone excitations as well.