Wide-band acoustically coupled thin-film BAW filter

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United States of America Patent

PATENT NO 9893712
SERIAL NO

13879028

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Abstract

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The invention relates to an acoustically coupled thin-film BAW filter, comprising a piezoelectric layer, an input-port on the piezoelectric layer changing electrical signal into an acoustic wave (SAW, BAW), and an output-port on the piezoelectric layer changing acoustic signal into electrical signal. In accordance with the invention the ports include electrodes positioned close to each other, and the filter is designed to operate in first order thickness-extensional TE1 mode.

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Patent Owner(s)

Patent OwnerAddress
TEKNOLOGIAN TUTKIMUSKESKUS VTT OYTEKNIIKANTIE 21 ESPOO 02150

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Meltaus, Johanna Vtt, FI 9 734
Pensala, Tuomas Helsinki, FI 34 1176

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