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PN function in Visualizaion & Anaysis XL Calculator

JaeWook

Hi,

I have a question about the PN function, available in the Calculator.

 

Is an output phase noise spectrum is a signle sideband or a double sideband spectrum?

To avoid any confusions, I mean the 'double sideband' by a spectrum 3dB more than the 'single sideband' in magnitude.

 

Thanks for any comment or answers.

Jae Wook

Parents
  • Hi JaeWook,

    The December 2012 ViVa reference manual describes the pn() function as follows:

    "Returns a waveform for the transient phase noise of the input waveforms in decibels (dBc/
    Hz). Phase noise is defined as the power spectral density of the absolute jitter of an input
    waveform."

    Hence, as Andrew mentions, it is not the classical L(f) function which expresses the single sideband phase noise of a signal. The manual further defines it as:
     
     
    I hope this helps!
     
    Shawn 
Reply
  • Hi JaeWook,

    The December 2012 ViVa reference manual describes the pn() function as follows:

    "Returns a waveform for the transient phase noise of the input waveforms in decibels (dBc/
    Hz). Phase noise is defined as the power spectral density of the absolute jitter of an input
    waveform."

    Hence, as Andrew mentions, it is not the classical L(f) function which expresses the single sideband phase noise of a signal. The manual further defines it as:
     
     
    I hope this helps!
     
    Shawn 
Children
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