Switchable acoustic wave filter
AssigneeSkyworks Solutions, Inc.
InventorsWeimin Sun, Hai H. Ta, David Richard Pehlke
Life of this patent
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Abstract
Aspects of this disclosure relate to a switchable acoustic wave filter. The switchable acoustic wave filter can include a switch configured to electrically connect an acoustic wave resonator to a node in a first state and to electrically isolate the acoustic wave resonator from the node in a second state. The switchable acoustic wave filter can filter a radio frequency signal with at least the acoustic wave resonator and a second acoustic wave resonator in the first state. The switchable acoustic wave filter can filter the radio frequency signal with at least the second acoustic wave resonator in the first state. Related multiplexers, radio frequency systems, wireless communication devices, and methods are also disclosed.
Claims20
A multiplexer comprising:
- a switchable filter configured to receive a radio frequency signal, the switchable filter including switchable acoustic wave resonators and a switch, the switch configurable into at least a first state and a second state, and the switch configured to select a different subset of the switchable acoustic wave resonators to filter the radio frequency signal in the first state than in the second state;
- and
- an inductor-capacitor filter coupled to the switchable filter at a common node of the multiplexer.
A multiplexer comprising:
- a switchable filter configured to receive a radio frequency signal, the switchable filter including switchable acoustic wave resonators and a switch, the switch configurable into at least a first state and a second state, and the switch configured to select a different subset of the switchable acoustic wave resonators to filter the radio frequency signal in the first state than in the second state;
- a filter that includes acoustic wave resonators;
- and
- a high pass filter coupled to the switchable filter and the filter at a common node.
A multiplexer comprising:
- a first switchable filter including first switchable acoustic wave resonators and a first switch, the first switch configured to select a different subset of the first switchable acoustic wave resonators for filtering in different states, and the first switchable filter being a band pass filter having a pass band;
- and
- a second switchable filter coupled to the first switchable filter, the second switchable filter including second switchable acoustic wave resonators and a second switch, the second switch configured to select a different subset of the second switchable acoustic wave resonators for filtering in different states, and the second switchable filter being a band stop filter having a stop band, the second switchable filter coupled to the first switchable filter.
Dependencies are inferred from the claim text.