In accordance with an embodiment, a filter network is configured to be coupled to a first switch, a second switch, and an output port. The filter network includes a first filter coupled between the first switch and the output port, and the second filter coupled between the second switch and the output port. The first filter has a pass band having a first frequency range that includes a first frequency, and a stop band that includes a second frequency that is a distortion product of the first frequency. The second filter has a second frequency range that includes the second frequency and the stop band that includes the first frequency. The second frequency range is higher in frequency than the first frequency range.