Patent ID: 7693236

Claim:
An RF receiver integrated circuit, comprising: A. a substrate of semiconductor material; B. mixer circuitry, formed on the substrate, having an input for receiving an analog RF signal with a bandwidth of f o and an output for supplying an analog IF signal of frequency f c in response to receiving the analog RF signal; C. analog to digital converter circuitry, formed on the substrate, having an input connected with the output of the mixer circuitry and having four parallel outputs carrying signals representing a digital IF signal, the converter circuitry having a sampling frequency f s of four times f c ; D. CORDIC circuitry, formed on the substrate, having four parallel inputs connected with the four parallel outputs of the converter circuitry, a first set of four outputs, and a second set of four outputs; E. first decimator and quantizer circuitry, formed on the substrate, having inputs connected with the first set of four outputs and an output of two bits supplying signals at a sampling frequency of 2×f o ; F. second decimator and quantizer circuitry, formed on the substrate, having inputs connected with the second set of four outputs and an output of two bits supplying signals at a sampling frequency of 2×f o ; G. multiplex and serial to parallel circuitry, formed on the substrate, having inputs connected with the outputs of the first and second decimator and quantizer circuitry and having a serial output; and H. first differential transmitter circuitry, formed on the substrate, having an input connected with the serial output and having first differential serial outputs for sending signals at a sampling rate of 8×f o from the substrate.