Radio frequency systems with tunable filter
AssigneeSkyworks Solutions, Inc.
InventorStephane Richard Marie Wloczysiak
Life of this patent
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Abstract
Radio frequency (RF) systems with tunable filters are provided herein. In certain embodiments, an RF system includes a first RF processing circuit configured to process a first frequency band of a first communication standard and a second frequency band of a second communication standard. The first frequency band and the second frequency band are close in frequency and/or partially overlapping in frequency. The first RF processing circuit includes a tunable filter for changing the bandwidth of the first RF processing circuit to enhance the robustness of the first RF processing circuit to blocker or jammer signals of a third frequency band.
Claims20
A mobile device comprising:
- at least a first antenna;
- and
- at least one front end circuit electrically coupled to the first antenna and including a first radio frequency processing circuit that processes a first frequency band with a bypass filter, the front end circuit further including a second processing circuit that processes a second frequency band with at least one blocker detector, at least one controller, and one or more tunable filters, the blocker detector generates a detection signal based on detecting a blocker signal, and the controller controls an amount of filtering of the one or more tunable filters based at least in part on the detection signal.
A front end circuit comprising:
- a first radio frequency processing circuit that processes a first frequency band with a bypass filter, the front end circuit further including a second processing circuit that processes a second frequency band with one or more tunable filters, at least one controller that controls the one or more tunable filters, and at least one blocker detector that generates a detection signal based on detecting a blocker signal, and the controller controls an amount of filtering of the one or more tunable filters based at least in part on the detection signal.
Dependencies are inferred from the claim text.