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Quadrature Amplitude Modulation *Phase shift*

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USMCinfinity

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Hey guys I'm trying to do a Quadrature Amplitude Modulation circuit in Simulink but I don't know how to do the phase shift, any help on what block should I use?
 

Hello,

search for quadrature modulator. Such a modulator uses two mixers that have two base band signal (I and Q) as input. The mixers are fed by a cosine and -sine carrier (derived from one oscillator).
 

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