RECEIVER FOR NON CONTIGUOUS CARRIER AGGREGATION SCHEMES

摘要

Data is received that has been transmitted via a combination of radio frequency signals using carrier aggregation, each radio frequency signal occupying a respective radio frequency band, the bands being arranged in two groups separated in frequency by a first frequency region, the first of the two groups occupying a wider frequency region than the second group. The radio frequency signals are down converted using quadrature mixing (906a, 906b, 906c, 906d) to give in phase and quadrature components, and the in phase and quadrature components are filtered using a first bandpass filter bandwidth (902a, 902b) to give first bandpass filtered in phase and quadrature components and filtered using a second bandpass filter bandwidth (904a, 904b), different from the first bandpass filter bandwidth, to give second bandpass filtered in phase and quadrature components. A reconfigurable receiver is configurable to a first mode to receive the combination of radio frequency signals, and is also configurable to at least a second mode. At least one first filter is configured, in the first mode, to use a first bandpass filter bandwidth (902a, 902b) and, in the second mode, to use a low pass filter bandwidth (900a, 900b). At least one second filter is configured, in the first mode, to use a second bandpass filter bandwidth (904a, 904b), different from the first bandpass filter bandwidth (902a, 902b).