Electro acoustic RF filter with impedance element having improved performance and multiplexer component comprising the filter
AssigneeRF360 Singapore Pte. Ltd.
InventorsAnsgar Schaeufele, Thomas Bauer, Gholamreza Dadgar Javid
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Abstract
An improved electro acoustic RF filter (FC) is provided. The RF filter comprises an electro acoustic resonator (EAR) connected between an input port and an output port, an impedance element and a damping and/or dissipation element (DE) in mechanical contact to the impedance element. The damping and/or dissipation element is provided and configured to remove acoustic energy from the impedance element which has a similar construction as the resonator on the same substrate. With such a construction an acoustically inactive impedance element (AIIE) is obtained.
Claims10
An electro acoustic RF filter, comprising:
- an input port and an output port;
- an electro acoustic resonator electrically connected between the input port and the output port;
- an acoustically inactive impedance element electrically coupled to the electro acoustic resonator;
- and
- a damping and/or dissipation element connected to the acoustically inactive impedance element, wherein the damping and/or dissipation element is provided and configured to remove acoustic energy from the inactive impedance element by either dissipation of acoustic energy, or by reducing the coupling or by suppressing an acoustic mode.
A multiplexer component comprising an electro acoustic filter, the electro acoustic filter comprising:
- an input port and an output port;
- an electro acoustic resonator electrically connected between the input port and the output port;
- an acoustically inactive impedance element electrically coupled to the electro acoustic resonator;
- and
- a damping and/or dissipation element connected to the acoustically inactive impedance element, wherein the damping and/or dissipation element is provided and configured to remove acoustic energy from the inactive impedance element by either dissipation of acoustic energy, or by reducing the coupling or by suppressing an acoustic mode.
Dependencies are inferred from the claim text.