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Low output power from the ADRV9361


I'm seeing only -26 dBm output power from the ADRV9361-Z7035 at 6 GHz, and around -15 dBm at 100 MHz.

I'm using a simple GNU Radio FMComms2/3/4 sink with a constant source.

With max hold on the analyser at 6 GHz I get up to -18 dBm during startup, before it falls back to -26 dBm. There is 0 dB TX attenuation applied, and I am using the supplied U.FL to SMA adapter cable.



Changed Z035 to Z7035
[edited by: AlexJCole at 8:29 AM (GMT 0) on 3 Oct 2019]
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  • Hi Jon,

    Thanks for your response, I really appreciate the effort you put into it.

    It's good to know that there's nothing wrong with my application, though it is rather annoying to have such wildly different power profiles for each Tx port. As luck would have it, the SoM is driving an LO chain which features a couple of over-performing amps and several over-performing filters, resulting in a drive level which falls perfectly within an acceptable range - so no harm done for the current application.

    Thanks again!

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