Back to results
US 8,620,250 B2Granted
Resonator-based filtering
AssigneeHollinworth Fund, L.L.C.
InventorJean-Luc Erb
Life of this patent
Estimating the term…
Abstract
A filter may be constructed from multiple acoustic elements in parallel. A filtering method may comprise passing a signal to be filtered through such parallel acoustic elements. Such filtering may be applicable to communication devices.
Claims22
A filter device, comprising:
- one or more 2-port acoustic resonators coupled in parallel between a source node and a load node, each of the one or more 2-port acoustic resonators comprising:
- an input terminal;
- and
- a ground terminal;
- and
- one or more 1-port acoustic resonators coupled in parallel with the one or more 2-port acoustic resonators between the source node and the load node, at least one of the one or more 1-port acoustic resonators comprising a 2-port acoustic resonator having an input terminal and a ground terminal and arranged to implement the 1-port acoustic resonator.
3 more elements
A filter device, comprising:
- at least two acoustic elements coupled in parallel between a source node and a load node, wherein the at least two acoustic elements are arranged to filter a signal presented at the source node and output a filtered signal to the load node, the at least two acoustic elements including:
- at least one two-port acoustic element coupled between the source node and the load node;
- and
- at least one one-port acoustic element coupled in parallel to the at least one two-port acoustic element between the source node and the load node.
1 more element
A method comprising:
- directing an input signal into two or more parallel acoustic elements, the two or more parallel acoustic elements including at least one one-port acoustic element and at least one two-port acoustic element arranged to each other;
- and
- combining outputs of the two or inure parallel acoustic elements to obtain a filtered output signal.
Dependencies are inferred from the claim text.