Patent ID: 10727802

Abstract:
A method for the batch production of acoustic wave filters comprises: synthesizing N theoretical filters, each filter defined by a set of j theoretical resonator(s) having a triplet C0ij,eq, ωrij,eq and ωaij,eq, these parameters grouped into subsets; determining a reference resonator structure for each subset, naturally having a resonant frequency ωr,ref, where ωaij,eq<ωr,ref<ωrij,eq; determining, for each theoretical resonator, an elementary building block comprising an intermediate resonator R′ij, a parallel reactance Xpij and/or a series reactance Xsij, the intermediate resonator R′ij having a triplet C0ij, ωr,ref and ωa,ref, the parameters C0ij, Xpij and/or Xsij defined so the elementary building block has a triplet: C0ij,eq, ωrij,eq and ωaij,eq; determining the geometrical dimensions of the actual resonators Rij of the filters so they have a capacitance C0ij; producing each actual resonator; associating series and/or parallel reactances with actual resonators in order to form the elementary building blocks.