Acoustic resonator filter structure with tunable shunt coupled resonator filter
AssigneeQorvo US, Inc.
InventorNadim Khlat
Life of this patent
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Abstract
An acoustic resonator filter structure with a tunable shunt coupled resonator filter (CRF) is provided. Herein, the acoustic resonator filter structure is a stacked structure that includes a series resonator filter die and a tunable shunt CRF die. By stacking the series resonator filter die and the tunable shunt CRF die according to various embodiments, it is possible to reduce a footprint of the acoustic resonator filter structure, thus making it possible to incorporate multiple acoustic resonator filter structures in an acoustic ladder filter network.
Claims20
An acoustic resonator filter structure comprising:
- a series resonator filter die configured to resonate at a series resonance frequency to pass a signal from an input node to an output node;
- and
- a tunable shunt coupled resonator filter (CRF) die configured to resonate at a tunable parallel resonance frequency to block the signal between the input node and the output node.
An acoustic ladder filter network comprising a plurality of acoustic resonator filter structures each comprising:
- a series resonator filter die configured to resonate at a series resonance frequency to pass a signal from an input node to an output node;
- and
- a tunable shunt coupled resonator filter (CRF) die configured to resonate at a tunable parallel resonance frequency to block the signal between the input node and the output node.
A wireless device comprising at least one acoustic resonator filter structure, the at least one acoustic resonator filter structure comprises:
- a series resonator filter die configured to resonate at a series resonance frequency to pass a signal from an input node to an output node;
- and
- a tunable shunt coupled resonator filter (CRF) die configured to resonate at a tunable parallel resonance frequency to block the signal between the input node and the output node.
A method for configuring an acoustic ladder filter network comprising:
- configuring a series resonator filter die in each of a plurality of acoustic resonator filter structures to resonate at a series resonance frequency to pass a signal from an input node to an output node;
- and
- configuring a tunable shunt coupled resonator filter (CRF) die in each of the plurality of acoustic resonator filter structures to resonate at a tunable parallel resonance frequency to block the signal between the input node and the output node.
Dependencies are inferred from the claim text.