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US 2025/0030402 A1Published application
Rf filter device
AssigneeRF360 Singapore Pte. Ltd.
InventorsAlexandre Agusto SHIRAKAWA, Marcel GIESEN
Life of this patent
Estimating the term…
Abstract
An RF filter device that provides small spatial dimensions and good electric performance is provided. The filter device comprises a resonator structure and a further electric circuit. An acoustic mirror is arranged between the active structure and the further electric circuit.
Claims20
An RF filter device, comprising:
- a resonator structure comprising a bulk acoustic wave (BAW) resonator, the resonator structure comprising an active structure and an acoustic mirror, wherein the active structure comprises a bottom electrode, a top electrode, and a piezoelectric material between the bottom electrode and the top electrode;
- and
- a further electric circuit comprising at least one of a LC circuit, a LCR circuit, an active circuit element, a switch, an RF switch, a logic circuit, a further electroacoustic resonator, or an RF filter, wherein the acoustic mirror is arranged on one or more layers between layers including the active structure and layers including the further electric circuit.
An RF filter device, comprising:
- a resonator structure comprising a bulk acoustic wave (BAW) resonator, the resonator structure comprising an active structure and an acoustic mirror, wherein the active structure comprises a bottom electrode, a top electrode, and a piezoelectric material between the bottom electrode and the top electrode;
- and
- a further electric circuit, wherein the acoustic mirror is arranged on one or more layers between layers including the active structure and layers including the further electric circuit, and wherein lateral dimensions on each side of the acoustic mirror exceed lateral dimensions of the further electric circuit.
Dependencies are inferred from the claim text.