[time-nuts] fast freq. synthesis schemes

Luis Cupido cupido at mail.ua.pt
Wed Oct 21 18:55:59 UTC 2009


Brian,

Wow, a lot of nice reading I have here.
Thanks.

Luis Cupido.
ct1dmk.


BriMDavis at aol.com wrote:
> Luis wrote:
>>  I'm looking for the schemes used on the frequency synthesizers
>> that change frequency in few microseconds time (or less)
> <snip>
>>  Does anyone know of some paper or tech notes from
>> some instrument or modules that show block diagrams
>> of such?
>>
>  
>  I've never done much with fast PLL's, but here's some references
> for direct analog and direct digital synthesizers:
>  
> -----------
>  
>  One of the "classic" synthesizer books that covers direct
> synthesis techniques is available in a reasonably priced 
> paperback reprint ( but the photos aren't as nice as I 
> recall from the original hardcover ):
>  
>  Frequency Synthesizers: Theory and Design, Third Edition
> Vadim Manassewitsch 
> Wiley-Interscience
> _http://www.amazon.com/Frequency-Synthesizers-Theory-Vadim-Manassewitsch/dp/
> 0471772631/_ 
> (http://www.amazon.com/Frequency-Synthesizers-Theory-Vadim-Manassewitsch/dp/0471772631/) 
>  
> -----------
>  
> My favorite DDS book reprints many of the classic DDS papers:
>  
>  Direct Digital Frequency Synthesizers
> V. Kroupa (ed)
> IEEE Press
> _http://www.amazon.com/Direct-Digital-Frequency-Synthesizers-Venceslav/dp/07
> 80334388_ 
> (http://www.amazon.com/Direct-Digital-Frequency-Synthesizers-Venceslav/dp/0780334388) 
>  
> -----------
>  
> Another good reprint to have on hand, but not specific to
> your fast-switching question, is the following:
>  
>  Phase Noise in Signal Sources (Theory and Application)
> W. P. Robins 
> Peter Peregrinus Ltd / IEE
> _http://www.amazon.com/Phase-Signal-Sources-Theory-Application/dp/086341026X
> /_ 
> (http://www.amazon.com/Phase-Signal-Sources-Theory-Application/dp/086341026X/) 
>  
> -----------
>  
>  This web page about the HP 51xx family includes some HP direct synthesis 
> app notes and articles:
>  
>  _http://www.hpmemory.org/news/5100/hp5100_page_00.htm_ 
> (http://www.hpmemory.org/news/5100/hp5100_page_00.htm) 
> _http://www.hpmemory.org/an/pdf/an_96.pdf_ 
> (http://www.hpmemory.org/an/pdf/an_96.pdf) 
>  
> -----------
>  
>  Rick Karlquist's UFFC papers are a great read on direct synthesizer
> topology, albeit geared towards a specific application:
>  
> _http://www.karlquist.com/FCS95.pdf_ (http://www.karlquist.com/FCS95.pdf) 
> _http://www.karlquist.com/FCS96.pdf_ (http://www.karlquist.com/FCS96.pdf) 
>  
> -----------
>  
>  For IEEE/UFFC members, the UFFC archive is a good resource for 
> synthesizer design info:
>  
>   _http://www.ieee-uffc.org/main/publications/fcs/index.asp_ 
> (http://www.ieee-uffc.org/main/publications/fcs/index.asp) 
>  
> -----------
>  
>  The basic Comstron frequency plan is summarized in their 1988 patent:
>  
>   _http://www.google.com/patents?id=bgA7AAAAEBAJ&dq=4725786_ 
> (http://www.google.com/patents?id=bgA7AAAAEBAJ&dq=4725786) 
>  
>  The Comstrons make great lab synthesizers, and are often available
> cheap on e$ay but I'd advise keeping a spares unit on hand for
> troubleshooting and repair.
>  
> -----------
>  
> 
> have fun,
> Brian
>  
>  
>  
>  
> 
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