Akoustis, Inc.

Saurabh Gupta

Dae Ho Kim

Pinal Patel

Zhiqiang Bi

Emad Mehdizadeh

Jeffrey Blanton Shealy

Rohan W Houlden

David M Aichele

Guillermo Moreno Granado

Bradford R Bersin

Katherine W Davis

An RF diplexer circuit device using modified lattice, lattice, and ladder circuit topologies. The diplexer can include a pair of filter circuits, each with a plurality of series resonator devices and shunt resonator devices. In the ladder topology, the series resonator devices are connected in series while shunt resonator devices are coupled in parallel to the nodes between the resonator devices. In the lattice topology, a top and a bottom serial configurations each includes a plurality of series resonator devices, and a pair of shunt resonators is cross-coupled between each pair of a top serial configuration resonator and a bottom serial configuration resonator. The modified lattice topology adds baluns or inductor devices between top and bottom nodes of the top and bottom serial configurations of the lattice configuration. A multiplexing device or inductor device can be configured to select between the signals coming through the first and second filter circuits.

5.1-7.1GHz Wi-Fi6E coexistence acoustic wave resonator RF diplexer circuit

A BAW resonator ladder topology pass-band filter can include a plurality of series branches each including BAW series resonators. A plurality of shunt branches can each include BAW shunt resonators, wherein the plurality of series branches are coupled to the plurality of shunt branches to provide the BAW resonator ladder topology pass-band filter. A high-impedance shunt branch can include a plurality of high-impedance BAW shunt resonators coupled together in-series to provide an impedance for the high-impedance shunt branch that is greater the other shunt branches in the BAW resonator ladder topology pass-band filter.

Bulk acoustic wave resonator filters including a high impedance shunt branch and methods of forming the same

A device includes a piezoelectric layer on a substrate and including a portion included in an acoustic resonator, a first conductive layer on the piezoelectric layer and including a first electrode of the acoustic resonator on a first side of resonator portion of the piezoelectric layer, and a second conductive layer on the piezoelectric layer and including a second electrode of the acoustic resonator on a second side of the resonator portion of the piezoelectric layer. An insulating layer is disposed on the second conductive layer and an interconnection metal layer is electrically connected to the second conductive layer or the first conductive layer and has a portion extending onto the insulating layer and overlapping a portion of the second conductive layer to provide a capacitor electrode of a capacitor coupled to the first electrode and/or the second electrode.

Bulk acoustic wave resonator filters with integrated capacitors

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Mooresville, NC, United States of America

Saurabh Gupta