Patent ID: 9634702
Date: 2017-04-25
CPC Classifications: H03H,H04B

Claim:
1. An apparatus comprising: a first N-path filter configured with at least a first passband, wherein the first N-path filter is coupled to a radio frequency input port providing at least a first carrier aggregation signal, a second carrier aggregation signal, and an interfering signal, the first passband passing the interfering signal and suppressing the first carrier aggregation signal and the second carrier aggregation signal; a second N-path filter configured with at least a second passband, wherein the second N-path filter is coupled to the radio frequency input port providing at least the first carrier aggregation signal, the second carrier aggregation signal, and the interfering signal, the second passband passing the first carrier aggregation signal, the second carrier aggregation signal, and the interfering signal; and a combiner configured to subtract a first output of the first N-path filter from a second output of the second N-path filter in order to provide, as an output, the first carrier aggregation signal and the second carrier aggregation signal.