Ghost cancellation circuit system

A ghost cancellation system comprising:

• a carrier extracting circuit for generating a reference carrier having a reference phase out of a composite wave including a direct wave and a ghost wave;
• phase shifting means for generating detection axis signals having a phase independent of the relative phase difference between the reference phase of the reference carrier and the phase of the ghost wave;
• a pair of phase detecting circuits each coupled to the composite wave and a respective detection axis signal for detecting the phase of the composite wave relative to the detection axis signals and for producing output signals based thereon;
• at least two coefficient circuits coupled to the output of respective of said phase detecting circuits for producing respective output signals corresponding to coefficient multiples of the output signals of said phase detecting circuits;
• at least one first adding circuit coupled to the output signals of the at least two coefficient circuits for producing at least one output signal based on the sum thereof;
• delay circuit means coupled to the at least one output signal of said at least one first adding circuit for delaying said at least one output signal thereof a time substantially equal to the delay time of the ghost wave to produce at least one compensation signal based on the delayed at least one output signal of said at least one first adder;
• a second adder circuit for combining the output signal of at least one of the phase detector circuits and the compensation signal of the delay signal means;
• and
• wherein the coefficients of the coefficient circuits are set in dependence on the phase detection of said phase detecting circuits and the amplitude and phase of the ghost wave, to thereby cancel the in-phase component and the orthogonal component of the ghost wave.