MULTILAYER PIEZOELECTRIC SUBSTRATE FILTERS WITH CONSISTENT BAND BALANCE

A die includes at least two surface acoustic wave resonators having different resonant frequencies. A first of the at least two surface acoustic wave resonators includes first interdigital transducer electrodes having a first duty factor and disposed on a multilayer piezoelectric substrate. The mult...

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Bibliographic Details
Main Authors Tajima, Motoyuki, Goto, Rei
Format Patent
LanguageEnglish
Published 14.03.2024
Subjects
BASIC ELECTRONIC CIRCUITRY
ELECTRICITY
IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS
RESONATORS
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Abstract A die includes at least two surface acoustic wave resonators having different resonant frequencies. A first of the at least two surface acoustic wave resonators includes first interdigital transducer electrodes having a first duty factor and disposed on a multilayer piezoelectric substrate. The multilayer piezoelectric substrate a layer of piezoelectric material having a lower surface bonded to an upper surface of a layer of a second material different from the piezoelectric material. A second of the at least two surface acoustic wave resonators includes second interdigital transducer electrodes having a second duty factor different from the first duty factor and disposed on the multilayer piezoelectric substrate to improve band balance of a device formed from the at least two surface acoustic wave resonators.
AbstractList A die includes at least two surface acoustic wave resonators having different resonant frequencies. A first of the at least two surface acoustic wave resonators includes first interdigital transducer electrodes having a first duty factor and disposed on a multilayer piezoelectric substrate. The multilayer piezoelectric substrate a layer of piezoelectric material having a lower surface bonded to an upper surface of a layer of a second material different from the piezoelectric material. A second of the at least two surface acoustic wave resonators includes second interdigital transducer electrodes having a second duty factor different from the first duty factor and disposed on the multilayer piezoelectric substrate to improve band balance of a device formed from the at least two surface acoustic wave resonators.
Author Goto, Rei
Tajima, Motoyuki
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Snippet A die includes at least two surface acoustic wave resonators having different resonant frequencies. A first of the at least two surface acoustic wave...
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SubjectTerms BASIC ELECTRONIC CIRCUITRY
ELECTRICITY
IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS
RESONATORS
Title MULTILAYER PIEZOELECTRIC SUBSTRATE FILTERS WITH CONSISTENT BAND BALANCE
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