Invention Grant
- Patent Title: RF filter circuit including BAW resonators
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Application No.: US17858766Application Date: 2022-07-06
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Publication No.: US11616490B2Publication Date: 2023-03-28
- Inventor: Dae Ho Kim , Mary Winters , Ramakrishna Vetury , Jeffrey B. Shealy , Rohan W. Houlden , David M. Aichele
- Applicant: Akoustis, Inc.
- Applicant Address: US NC Huntersville
- Assignee: Akoustis, Inc.
- Current Assignee: Akoustis, Inc.
- Current Assignee Address: US NC Huntersville
- Agency: Ogawa P.C.
- Agent Richard T. Ogawa
- Main IPC: H03H9/60
- IPC: H03H9/60 ; H03H9/02 ; H03H9/10 ; H03H9/54 ; H03H9/58 ; H03H9/17 ; H03H3/007 ; H03H9/13

Abstract:
An RF circuit device using modified lattice, lattice, and ladder circuit topologies. The devices can include four resonator devices and four shunt resonator devices. In the ladder topology, the resonator devices are connected in series from an input port to an output port while shunt resonator devices are coupled the nodes between the resonator devices. In the lattice topology, a top and a bottom serial configurations each includes a pair of resonator devices that are coupled to differential input and output ports. 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. These topologies may be applied using single crystal or polycrystalline bulk acoustic wave (BAW) resonators.
Public/Granted literature
- US20220345111A1 5G n41 2.6 GHz BAND ACOUSTIC WAVE RESONATOR RF FILTER CIRCUIT Public/Granted day:2022-10-27
Information query
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