An apparatus for processing a Bluetooth signal advantageously mixes down a received RF signal to an IF signal wherein one band-edge of the spectrum of the IF signal may be approximately 0 Hz. In one embodiment, the IF signal may be digitized, decimated and filtered before being processed into a baseband...http://www.google.com/patents/US8144811?utm_source=gb-gplus-sharePatent US8144811 - Hybrid zero-IF receiver
