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Re: [Discuss-gnuradio] grGPS Preliminary Schematic

From: ldoolitt
Subject: Re: [Discuss-gnuradio] grGPS Preliminary Schematic
Date: Thu, 6 Apr 2006 10:39:15 -0700
User-agent: Mutt/1.5.11+cvs20060403

On Thu, Apr 06, 2006 at 06:55:57PM +0200, Martin Dvh wrote:
> (Life would be so much easier if all the clocks on the usrp would first go 
> through the fpga.
> Which could then upconvert/divide/pll/override/combine any clock in verilog 
> software.)

Rule 1 for digitizing RF: never let the clock touch the FPGA.
Even if the chip itself were perfect, all that package-induced
ground noise spells death to any decent phase noise performance.

    - Larry

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