Bulk acoustic wave resonator filters including rejection-band resonators

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United States of America Patent

PATENT NO 11581872
APP PUB NO 20220368308A1
SERIAL NO

17661367

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Abstract

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A BAW resonator filter can include a BAW resonator pass-band filter ladder, the BAW resonator pass-band filter ladder can be configured to pass frequency components of an input signal in a pass-band of frequencies received at an input node of the BAW resonator pass-band filter ladder to an output node of the BAW resonator pass-band filter ladder. A first rejection-band series resonator can be coupled in series between an input port of the BAW resonator pass-band filter ladder and the input node, the first rejection-band series resonator can have a first anti-resonant frequency peak in a rejection-band of frequencies that is less than the pass-band of frequencies. A second rejection-band series resonator can be coupled in series between an output port of the BAW resonator filter and the output node, the second rejection-band series resonator can have a second anti-resonant frequency peak in the rejection-band of frequencies.

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Patent Owner(s)

  • AKOUSTIS, INC.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hodge, Michael D Belmont, US 20 25
Shen, Ya Huntersville, US 15 15

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