Patent ID: 6311046
Filing Date: 2001-10-30
Classification: H03F

Abstract:
A method for generating from a signal of varying amplitude and varying phase, a plurality of constant amplitude varying phase signals, the sum of which is the signal of varying amplitude and varying phase, comprising the steps of:generating a cosine carrier modulation waveform I(t) and a sine carrier modulation waveform Q(t) from the signal of varying amplitude and varying phase;generating a complementary waveform Q'(t) from the cosine carrier modulation waveform I(t) such that the sum of the squares of I(t) and Q'(t) is constant;modulating a cosine carrier signal with I(t) to obtain a first modulated cosine carrier;modulating a sine carrier signal with Q'(t) to obtain a first modulated sine carrier; andforming a sum and difference of the first modulated cosine carrier and the first modulated sine carrier to obtain the constant amplitude varying phase signals.