Required -- DDC Implementation Circuit of USRP

Hello there…

I wanted to have the schematic and possibly, the FPGA implementation
code
of the DDC circuit employed in USRP. I am not a core expert in analyzing
all
of it, just need to understand the basic implementation of DDC for
dynamic
extraction of baseband in channels up to 6MHz in bandwidth.

Thanking you in anticipation…

Regards,
Prasanna

On Sat, Feb 02, 2008 at 09:09:55PM +0530, Prasanna R. wrote:

Prasanna
If you’ve downloaded the code for GNU Radio, you have all the code
that goes in the FPGA.
usrp/fpga/top_level/usrp_std/usrp_std.v is the top of the design.
The stuff you’re looking for is in usrp/fpga/sdr_lib

For schematics, see http://www.gnuradio.org/trac/wiki/USRP

Eric

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