Improved Design of a USB Phase Demodulator

For the problem of dividing zero and ROM capacity limitation during the development of the Unified S Band(USB) phase demodulation system,through the study of CORDIC(Coordinate Rotation Digital Computer) algorithm, an arctangent module based on CORDIC algorithm is realized.By using this module,a phase demodulator for the USB system is designed.The simulation result shows that the two above-mentioned problems can be solved well.Besides,a band-pass filter for dividing the subcarriers of the USB signal is designed.