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ADRV9364-Z7020 SOM

Hello dear support team 

From my customer:

We are using the ADRV9364-Z7020ADRV9364-Z7020 SOM component for a GPS application,

during development we encounter a strange phenomenon in RF modulation:

When modulating RF with a constant value, and expecting only a central lobe

we get through the Spectrum Analyzer a number of side lobes.



We use the example of libiio - ad9631-iiostream.c –we change is the RF gain                        

Connect RF-TX channel A to Spectrum Analyzer


Below is a picture of the spectrum

Thanks for your help.


Parents Reply
  • Hi, 

    we saw the spurs at ~630 KHz, regardless of the carrier frequency (we check at 1.5 & 2.5 GHz)

    I share two plot with center and right peak with marker (the example is with 1.57542 carrier frequency)

    the sampling rate was 2.5 MHz, but we see the spurs also with sampling rate of 2MHz.
    ref_clk frequency is 10MHz of Rb clock.
    best regards,