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IWR1443: ADC format: Complex 1x vs Complex 2x

Dan Wang3
Prodigy 545 points
Part Number: IWR1443

What is the difference of complex 1x and complex 2x ADC data?

  • 0
    TI__Prodigy 545 points
    For complex 1x mode, DFE applies IQ imbalance correction and then downsample the signal. So it allows 80%-90% of the signal bandwidth compare to the sampling rate.
    For complex 2x mode, only half of the bandwidth (0~fs/2) is occupied by the signal, and the other half (the image band) can be occupied by other noise source like interference. So complex 2x mode is mainly designed for applications that needs interference cancellation.