Patent ID: 6608669
Filing Date: 2003-08-19
Classification: G01S,H04B,H04L

Abstract:
A method of generating in-quadrature signals, the method comprising:receiving a Doppler frequency-shifted signal; phase shifting the Doppler frequency-shifted signal generating thereby a phase-shifted Doppler frequency-shifted signal and an unphase-shifted Doppler frequency-shifted signal; receiving a local oscillator signal; phase shifting the local oscillator signal generating thereby a phase-shifted local oscillator signal and an unphase-shifted local oscillator signal; further phase shifting the local oscillator signal; mixing the phase-shifted Doppler frequency-shifted signal and the further phase-shifted local oscillator signal generating thereby a signal that includes the phase-shifted Doppler frequency-shifted signal and the further phase-shifted local oscillator signal; and mixing the unphase-shifted Doppler frequency-shifted signal and the unphase-shifted local oscillator signal generating thereby a signal that includes the unphase-shifted local oscillator signal and the phase-shifted Doppler frequency shifted signal.