Compensating amplifier phase in a diversity receiver front end
AssigneeSkyworks Solutions, Inc.
InventorStephane Richard Marie WLOCZYSIAK
Life of this patent
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Abstract
Diversity receiver front end system with amplifier phase compensation. A receiving system can include a first amplifier disposed along a first path, corresponding to a first frequency band, between an input of the receiving system and an output of the receiving system. The receiving system can include a second amplifier disposed along a second path, corresponding to a second frequency band, between the input of the receiving system and the output of the receiving system. The receiving system can include a first phase-shift component disposed along the first path and configured to phase-shift the second frequency band of a signal passing through the first phase-shift component based on a phase-shift caused by the first amplifier at the second frequency band.
Claims20
A method for phase-shifting signals in a receiving system, the method comprising:
- receiving a band select signal indicating one or more frequency bands;
- activating one or more of a plurality of paths through the receiving system based on the band select signal, the plurality of paths including a first path corresponding to a first frequency band and a second path corresponding to a second frequency band;
- sending a tuning signal to a first phase-shifting component on the first path and to a second phase-shifting component on the second path;
- and
- phase-shifting the second frequency band of a signal passing through the first phase-shift component using the first phase-shifting component, a phase-shift at the second frequency band of the first phase-shifting component based on a phase-shift caused by one or more components on the first path at the second frequency band.
A method for phase-shifting signals in a receiving system, the method comprising:
- receiving a band select signal indicating one or more frequency bands;
- activating one or more of a plurality of paths through the receiving system based on the band select signal, the plurality of paths including a first path corresponding to a first frequency band and a second path corresponding to a second frequency band;
- sending a tuning signal to a first phase-shifting component on the first path and to a second phase-shifting component on the second path;
- and
- phase-shifting the second frequency band of a signal on the first path using the first phase-shifting component such that a second initial signal propagated along the second path and a second reflected signal propagated along the first path are at least partially in-phase.
Dependencies are inferred from the claim text.