Patent ID: 6894588

Claim:
A resonator filter for acoustic surface waves or surface-proximate waves, comprising: a whole positive number n of acoustic resonators fashioned on a piezoelectric substrate, each respectively comprising at least one interdigital transducer; and a first and a second reflector between which the at least one interdigital transducer is arranged, the reflectors being respectively allocated to at least one of the n resonators and that respectively are constructed to exhibit a frequency-dependent reflection behavior and to provide a reflection function comprising at least one minimum; wherein the first and the second reflector are fashioned differently so that the frequency position of the minimums of the two reflection functions of the first and second reflector are shifted relative to one another; and wherein the minimums of the reflection functions of the first and second reflector are shifted relative to one another such that a minimum of the first reflection function has approximately the same frequency position as a maximum of the second reflection function.