Sampling Rate Question?

[pm43625]

I am the proud owner of a BladeRF 2.0 micro XA4.

When transmitting, is the sampling rate upsampled to the frequency of the DAC?

Thank you!

[heavilykringle]

Yeah, pretty much. The BladeRF 2.0 uses interpolation on the transmit side, so your baseband sample rate gets upsampled to match the DAC rate before transmission. The exact interpolation factor depends on the sample rate you set and the internal clocking, but you usually don’t have to handle that manually—the FPGA handles it. If you’re trying to optimize signal quality or bandwidth, it’s worth checking what interpolation factor you’re actually running at, since that can affect things like spectral images and filtering.