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  1. #1
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    IQ Demodulation In ultrasound

    WHy do we do IQ Demodulation for recived raw RF data.Can anyone explain in detail....than u

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  2. #2
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    Re: IQ Demodulation In ultrasound

    Because many apps want both amplitude and phase or
    frequency and phase.

    So two unknowns, needing two variables.



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  3. #3
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    Re: IQ Demodulation In ultrasound

    People do use IQ demodulation because the transmitted signal is QAM.

    Since QAM utilizes amplitude and phase variation to carry information, it appears that QAM increases transmission efficiency. However, it has all the drawbacks of AM and PM schemes.



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  4. #4
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    Re: IQ Demodulation In ultrasound

    Does it have any relationship with sampling frequency....



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