MM6108 frequency drift tolerance

Hardware
1

How much frequency drift can the chip tolerate?

My custom RF frontend for the MM6108 introduces some frequency drift, and I want to understand how much the MM6108 can tolerate, ideally in kHz, across MCS0–MCS4 and bandwidths from 1 to 8 MHz.

I also have an R&S SMM100A vector signal generator, but it does not support generating valid 802.11ah Wi-Fi frames. Because of that, I cannot easily inject a proper 11ah test signal into my custom frontend chain.

Would it be possible for you to provide a valid IQ waveform / IQ sample stream containing proper 802.11ah packets, with predefined payload data such as all zeros, PN9, or PN11?

That would let me:

  • play the waveform through the signal generator,

  • pass it through my custom frontend chain,

  • evaluate whether the MM6108 can receive it correctly,

  • and measure tolerance to frequency drift in a controlled way.

If you already have any internal test waveforms for this purpose, even for basic receive sensitivity / CFO tolerance checks, that would be very helpful.

2

Hi @AlexShmel ,

The Wi-Fi HaLow specification allows a frequency drift of ±20 ppm, which must cover all variations over temperature and crystal lifetime.

We go further and apply a tighter internal limit of ±10 ppm during testing to ensure sufficient margin and robust performance in real-world conditions.