QUALCOMM Incorporated
INDUCTORLESS INTERFERENCE CANCELLATION FILTER

Abstract:

A programmable filter includes a first programmable filter instance comprising a first adjustable active inductance capacitively coupled to a signal receive path, the capacitive coupling comprising at least one adjustable capacitance, the adjustable active inductance and the at least one adjustable capacitance configurable to provide a filter response at a first selected frequency, and a second programmable filter instance comprising a second adjustable active inductance capacitively coupled to the signal receive path, the capacitive coupling comprising at least one adjustable capacitance, the second adjustable active inductance and the at least one adjustable capacitance configurable to provide a filter response at a second selected frequency.