[time-nuts] 5 MHz Frequency Doubler

Brooke Clarke brooke at pacific.net
Thu Oct 26 20:36:04 UTC 2006


Hi Rex:

I think the 4 diode bridge circuit shown on the left of Fig 2 is the 
Mini Circuits MK-3.
Note the fundamental and third harmonic suppression on the MK-3.
http://www.minicircuits.com/MK-3.pdf

Have Fun,

Brooke Clarke

w/Java http://www.PRC68.com
w/o Java http://www.pacificsites.com/~brooke/PRC68COM.shtml
http://www.precisionclock.com



Rex wrote:

>On Wed, 25 Oct 2006 23:13:55 -0700, "Christopher Hoover"
><ch at murgatroid.com> wrote:
>
>  
>
>>Hey 'nuts,
>>
>>I'm looking for a good design for a 5 MHz frequency doubler.
>>
>>The Wenzel Blue Tops HF doubler is said to be  based on a low phase
>>noise, public-domain NIST design:
>>
>>
>><http://www.bluetops.com/Modules/lnhd.htm>
>>http://www.bluetops.com/Modules/lnhd.htm
>>
>>The LNHD is a fixed-frequency HF doubler based on a public-domain design
>>developed by the National Institute of Standards and Technology (NIST
>><http://www.boulder.nist.gov/timefreq/> ) for superlative phase noise
>>performance.
>>
>>
>>Can anyone point me at a this design?  I haven't had any luck finding it
>>on the web.
>>
>>I'm open to suggestions on other doubler designs, as well.  
>>
>>-ch
>>
>>    
>>
>
>Not a specific answer to the question, but I've been planning to try the
>"Simple 2-diode doubler" in this article...
>http://www.wenzel.com/pdffiles/diodedbl.pdf
>
>What say the experts? How does it stack up to the JFET design being
>discussed? Also, I'm visually oriented; finding it hard to follow the
>JFET discussion. Any pointer to a schematic of an implementation?
>
>
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>  
>



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