AWR1243: Baseband bandwidth and ADC sampling rate

Hello Antonio,

The max I/F bandwidth for AWR1243 is 15MHz and the max sampling rate in complex 1x mode is 18.75Msps. 

For more details on the recommended settings, please refer to mmWave Interface Control Document i.e mmWave ICD.

You can refer to table 5.24 in this document.

Regards,

Ishita

Hi Ishita,

Thanks for your response. My question is - if the maximum IF frequency is 15MHz, but the ADC sampling rate is 18.75MHz, then how should I interpret the frequency content between 15 and 18.75MHz? Should I assume that this has been low-pass-filtered by the anti-aliasing filter, and corresponds to noise content?

Best,
Antonio

Hi Ishita,

Are you able to answer my question? Perhaps a different way of phrasing it is - what are the bandwidths and responses of the analog and digital anti-aliasing filters in the receive path? When I program a certain ADC rate, what is the filtering response on the signal that is sampled?

Best,
Antonio

Yes, that answers my question. Thanks for the references.