FILTER CIRCUIT WITH COMPLEX BASEBAND FILTERS FOR NON-CONTIGUOUS CARRIER AGGREGATION
World Intellectual Property Organization Patent
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Abstract
A filter circuit may include a first path having a first complex baseband filter. The circuit may further include a second path having a second complex baseband filter. The circuit may further include a combiner coupled to an output of the first complex baseband filter and an output of the second complex baseband filter. Aspects of the present disclosure provide a radio frequency (RF) baseband filter for facilitating carrier aggregation (CA), such as non-contiguous CA. In some aspects, an RF baseband filter may independently adjust a gain of different bandwidth combinations of different frequencies while filtering out a jammer. Advantages of the RF baseband filter include significant reduction in current consumption, as compared to using two separate downlink paths (DLPs), and flexibility for independent gain control.
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