Electroacoustic Bandpass Filter Having Smoothed Insertion Loss

An electroacoustic bandpass filter comprising:

• a piezoelectric layer having an acoustic track;
• and
• a metallization layer arranged on the piezoelectric layer and in the acoustic track;
• wherein the acoustic track comprises a first section and a second section;
• wherein in the first section, a first transducer segment is formed in the metallization layer, the first transducer segment forming a resonance at a first frequency f1 and generating a spike in insertion loss;
• wherein in the second section, a second transducer segment is formed in the metallization layer, the second transducer segment forming a resonance at a second frequency f2 and generating a spike in insertion loss, where f2≠fl;
• and
• wherein the frequencies f1 and f2 are chosen such that the manifestation of the spikes in insertion loss of the filter is reduced compared with the manifestation of the spikes of the individual transducer segments.