[hpsdr] FW: Power supply filtering: Spread Spectrum

[Henry Vredegoor]

Forgot to send to the list.......

> -----Original Message-----
> From: Henry Vredegoor [mailto:henry.vredegoor at gmail.com] 
> Sent: donderdag 28 juni 2007 22:14
> To: 'Doug Gibbs'
> Subject: RE: [hpsdr] Power supply filtering: Spread Spectrum 
> 
> 
> Hi Doug, All,
> 
> 
> The effectiveness of these techniques, if I read the 
> documentation right, depends very heavily on the frequency 
> and bandwidths in use for a particular application.
> 
> I could imagine that with e.g. something like a high 
> bandwidth design like Mercury, you would rather have the EMI 
> at a fixed point where you know it is there and could deal 
> with it appropriately.......?
> 
> 
> 73's,
> 
> Henry.
> 
> 
> 
> 
> 
> 
> 
> > -----Original Message-----
> > From: hpsdr-bounces at hpsdr.org 
> > [mailto:hpsdr-bounces at hpsdr.org] On Behalf Of Doug Gibbs
> > Sent: donderdag 28 juni 2007 21:42
> > To: hpsdr at hpsdr.org
> > Subject: Re: [hpsdr] Power supply filtering
> > 
> > 
> > ***** High Performance Software Defined Radio Discussion List *****
> > 
> > Has anyone considered using a spread spectrum switching regulator 
> > controller to reduce the EMI effects? See the following links:
> > 
> > 
> > http://www.eetasia.com/ARTICLES/2006OCT/PDF/EEOL_2006OCT09_EMD
> _RFD_TA.pdf?SOURCES=DOWNLOAD
> 
> http://www.maxim-ic.com/appnotes.cfm/an_pk/1077
> 
> http://www.elecdesign.com/Articles/Index.cfm?AD=1&ArticleID=3577
> 
> 
> Doug - W8NFT
> _______________________________________________
> HPSDR Discussion List
> To post msg: hpsdr at hpsdr.org
> Subscription help: http://lists.hpsdr.org/listinfo.cgi/hpsdr-hpsdr.org
> HPSDR web page: http://hpsdr.org
> Archives: http://lists.hpsdr.org/pipermail/hpsdr-hpsdr.org/
>