Receiver for carrier aggregation
AssigneeBroadcom Corporation
InventorsAmir Hadji-Abdolhamid, Bernd Pregardier, Masoud Kahrizi
Life of this patent
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Abstract
A single hybrid receiver is provided for processing both single carrier and carrier aggregated (CA) communications signals where carriers are split into independent receive paths without any additional external components. The receiver receives all contiguous and non-contiguous intra-band CA and inter-band CA signals allowing for improved rejection and balanced rejection of jamming signals on either side of the two carrier signals.
Claims20
A mobile communications device comprising:
- one or more communications antennas;
- a transceiver including communications circuitry selectively coupled to the one or more communications antennas;
- at least a portion of the communications circuitry including a receiver for receiving a multiple carrier aggregated signal and operable to process either an intra-band carrier aggregated signal or an inter-band carrier aggregated signal using selectively coupled common communications processing chains, the selectively coupled common communications processing chains grouped into at least a first set of communications processing chains coupled to a first filter and a second set of communications processing chains coupled to a second filter;
- and
- a programmable tuning network coupled between at least the first set of communications processing chains to attenuate input return loss across a communications band of interest.
A communications device to receive intra-band and inter-band carrier aggregation signals, the communications device comprising:
- a receiver circuit including:
- a first set of communications processing chains to down-convert, in a first mode, intra-band carrier aggregated signals into baseband components of two or more carriers;
- and
- at least one of the first set of communications processing chains to down-convert, in a second mode, a first band of inter-band carrier aggregated signals into baseband components of one or more carriers;
- a second set of communications processing chains to down-convert a second band of the inter-band carrier aggregated signals into baseband components of one or more carriers when coupled to at least one communications processing chain of the first set of communications processing chains;
- and
- a switch to selectively couple the first set and the second set of communications processing chains.
A method producing baseband components from a received radio frequency signal comprising:
- determining whether the received radio frequency signal is a single carrier signal, an intra-band carrier aggregated signal, or an inter-band carrier aggregated signal;
- for the single carrier signal, powering-on a single down-conversion path coupled to an output of a first or second band filter which includes at least the single carrier;
- for the intra-band carrier aggregated signal, powering-on two or more down-conversion paths coupled to an output of the first band filter which includes carriers of the intra-band carrier aggregated signal;
- for the inter-band carrier aggregated signal, powering-on at least one down-conversion path coupled to an output of the first band filter comprising at least a first carrier of the inter-band carrier aggregated signal and powering-on at least one down-conversion path coupled to an output of the second band filter including at least a second carrier of the inter-band carrier aggregated signal;
- and
- down-converting the received radio frequency with the respective single, two or more, or at least one powered-on down-conversion paths to produce the baseband components for each carrier signal.
Dependencies are inferred from the claim text.