AREA EFFICIENT BASEBAND FILTER

摘要

An area efficient baseband filter is disclosed. In an exemplary embodiment, an apparatus includes a current to voltage (l-V) filter (300) configured to receive an input current signal at an input port (310) and generate a filtered output voltage signal at an output port (312) based on a feedback transconductance. The input current signal comprises an input DC current in addition to a signal current. The apparatus also includes a feedback circuit (308) connected between the output port (312) and the input port (310), the feedback circuit having at least one transistor (T1a-d) configured to couple the input DC current to a signal ground and to provide the feedback transconductance for the l-V filter (300).