Patent ID: 7545857

Claim:
A communications receiver comprising: an RF amplifier for coupling to an input RF carrier signal; an I demodulator, directly coupled to the output of the RF amplifier; a Q demodulator, directly coupled to the output of the RF amplifier; a quadrature LO generator for coupling to an LO signal source, the quadrature LO generator providing an LO_I output to the I demodulator and providing an LO_Q output to the Q demodulator; a polyphase filter having a first input directly coupled to the output of the I demodulator and having a second input directly coupled to the output of the Q demodulator; a first A/D converter having an input coupled to a first output of the polyphase filter; a second A/D converter having an input coupled to a second output of the polyphase filter; and a digital I/Q demodulator having first and second inputs respectively coupled to an output of the first A/D converter and an output of the second A/D converter.