Compensation of the connection wires influence for a behavioral model of a power BAW filter

A large signal S-parameter model for a power BAW filter built with AlN - based resonators is determined starting from the measured data obtained using connection wires at the filter input and output. A procedure aimed to obtain the main characteristics of the filter without the connection wires is proposed. These characteristics are: the frequency characteristic S21(f) and the frequency dependence of the reflected power on the second harmonic at the filter output; both characteristics are specified for a set of incident powers at the filter input.