Grey Box Non-Linearities Modeling and Characterization of a BandPass BAW Filter

Abstract

In this work, the non-linearities of a 3G/UMTS geared BandPass Bulk Acoustic Wave ladder filter composed of five resonators were modeled using non-linear modified Butterworth-Van Dyke model. The non-linear characteristics were measured and simulated, and they were compared and found to be fairly identical. The filter's central frequency is 2.12 GHz, the corresponding bandwidth is 61.55 MHz, and the quality factor is 34.55.

Keywords

• Band pass filter
• bulk acoustic wave (BAW)
• modified Butterworth-van Dyke model
• non linearities