Post Go back to editing

AD9371 bandwidth setting

hi, 

Struct mykonosTxProfile_t has two members about bandwidth, primarySigBandwidth_Hz and rfBandwidth_Hz. What are the meanings of these two members?

And in AD9371 Evaluation software, there is only 3 profiles(20/100MHz, 75/200MHz, 100/250MHz). If I want to config the data bandwidth to be 50MHz, how can I configure primarySigBandwidth_Hz and rfBandwidth_Hz for tx profile?

Parents
  • TES GUI & API Software Support AD9371/AD9375 section is be a better place for this question.

    Thanks,
    Dragos

  • You shall follow the below configuration,

    Tx Profile Section Tx Total RF BW and the Tx Primary Signal BW. The Tx Total RF BW in MHz is the total bandwidth used primarily by PA linerization algorithms such as digital predistortion. It is also referred to in user guides and the Wizard error messages as the “synthesis” bandwidth. It is expected that signals outside of the “Primary Signal BW” but inside the “Total RF BW” will be lower in level than the primary signals levels. As an example, a desired signal may occupy 18 MHz of bandwidth and an FPGA predistortion algorithm may linearize five times beyond that signal to reduce undesired emissions. The primary BW would then be 18 MHz and the total BW would be 90 MHz.

    Please refer to the below links for more details

    https://wiki.analog.com/resources/eval/user-guides/mykonos/software/filters

Reply
  • You shall follow the below configuration,

    Tx Profile Section Tx Total RF BW and the Tx Primary Signal BW. The Tx Total RF BW in MHz is the total bandwidth used primarily by PA linerization algorithms such as digital predistortion. It is also referred to in user guides and the Wizard error messages as the “synthesis” bandwidth. It is expected that signals outside of the “Primary Signal BW” but inside the “Total RF BW” will be lower in level than the primary signals levels. As an example, a desired signal may occupy 18 MHz of bandwidth and an FPGA predistortion algorithm may linearize five times beyond that signal to reduce undesired emissions. The primary BW would then be 18 MHz and the total BW would be 90 MHz.

    Please refer to the below links for more details

    https://wiki.analog.com/resources/eval/user-guides/mykonos/software/filters

Children