Patent ID: 6704285
Filing Date: 2004-03-09
Classification: H04J

Abstract:
A method of multiplexing N signals, N being two or more, each signal having a different frequency band, the method comprising:(a) selecting one of said N signals; (b) converting each of the N signals into a pair of quadrature phase signals; (c) filtering the quadrature phase signals of a first one of the quadrature phases and filtering the quadrature signals of the second one of the quadrature phases to produce a pair of filtered quadrature phase signals for each frequency band; (d) combining the filtered quadrature phase signals of the first and second phases to produce a pair of multiplexed quadrature phase signals for said N frequency bands; and (e) converting the multiplexed quadrature phase signals into a first multiplexed signal that contains the frequency band of the selected signal and a second multiplexed signal that contains the frequency bands of the remaining non-selected signals.