Pulse Generator Output Spectra, Input-Referred Noise Density

Discussion in 'X2 & X4 SoC' started by Vince Tseng, Mar 16, 2017.

  1. Vince Tseng

    Vince Tseng New Member

    Hi,

    Can you please answer the following questions where I have trouble finding the answers in X2, rev G. specification.

    In X2 specification, section 8.1.1 Pulse Generator Output Spectra, Figure 8.2 to 8.10, can you tell me what is the distance the powers were measured, 1 meter, 2 meter, 3 meter ....?

    In X2 specification, section 7, Figure 7.1, can you tell what is the input-referred noise density of the RFIN?

    Thank you,

    Vince Tseng
     
  2. Kristian

    Kristian New Member Staff Member

    Hi Vince,

    The TX PSDs are measured directly on a spectrum analyzer, with RBW = 1 MHz, using the Average-RMS detector. All test setup (cables, etc.) have been de-embedded, i.e. what you're seeing is the TX power delivered to a 50 ohm load.

    Best regards,
    Kristian