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Altera_Forum's avatar
Altera_Forum
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13 years ago

Decimation or re-sampling filter

For a software defined radio, we need to resample down factor 1000x. Specifically, we are bringing in a signal at 20 MSps and then decimating down in real-time to 20 KSps [for processing gain]. H...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
13 years ago

Search for digital downconverter.

http://www.ti.com/lsds/ti/analog/rfif.page

http://www.ti.com/lit/ds/symlink/gc5316.pdf

http://www.ti.com/lit/ds/symlink/gc5018.pdf

http://www.analog.com/en/digital-to-analog-converters/digital-updown-converters/products/index.html

http://www.analog.com/static/imported-files/data_sheets/ad6636.pdf

Even if you do decide to go for an FPGA solution, these data sheets tell you what DSP blocks/steps you need in the FPGA.

Another useful link that showed up in the Google search:

http://rfdesign.com/mag/605rfdf3.pdf

Cheers,

Dave