14-09-2017 дата публикации
Номер: US20170264257A1
Принадлежит:
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 C, ωand ω, these parameters grouped into subsets; determining a reference resonator structure for each subset, naturally having a resonant frequency ω, where ω<ω<ω; determining, for each theoretical resonator, an elementary building block comprising an intermediate resonator R′, a parallel reactance Xpand/or a series reactance Xs, the intermediate resonator R′having a triplet C, ωand ω, the parameters C, Xpij and/or Xsdefined so the elementary building block has a triplet: C, ωand ω; determining the geometrical dimensions of the actual resonators Rof the filters so they have a capacitance C; producing each actual resonator; associating series and/or parallel reactances with actual resonators in order to form the elementary building blocks. 1. A method for the batch production of a set of N filters F , where 1≦i≦N , each acoustic wave filter comprising j actual acoustic wave resonators R , where 1≦j≦M , and comprising center frequencies fand bandwidths I , which are different for at least two of them , comprising the following steps:{'sub': i', 'i', 'i', '0ij,eq', 'rij,eq', 'aij,eq, 'synthesizing N theoretical filters, each filter being defined on the basis of a set of j theoretical resonator(s), where 1≦j≦M, such that said theoretical filters have said center frequencies fand said bandwidths I, the theoretical resonators of each filter respectively having a triplet of parameters: a theoretical static capacitance C, a theoretical resonant frequency ωand a theoretical antiresonant frequency ω, these parameters being grouped into one or more subsets;'}{'sub': r,ref', 'rij,eq', 'a,ref', 'aij,eq, 'determining a reference resonator structure for each subset such that said reference resonator naturally has a resonant frequency ωthat is lower than the lowest of the theoretical resonant ...
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