Bulk acoustic wave filters

The invention relates to bulk acoustic wave filters comprising at least two bulk acoustic wave resonators, each of these comprising at least one first electrode, a piezoelectric layer and a second electrode. At least two of the bulk acoustic wave resonators have effective resonator surfaces which differ in their surface form and/or surface content. The inventive design of the bulk acoustic wave resonators enables optimal suppression of interference modes without influencing the impedance level of the filter.