[time-nuts] 10MHz Square to Sine Wave Conversion

Bob Darlington rdarlington at gmail.com
Thu Jul 16 17:24:10 EDT 2015


For the life of me I can't find the link to the schematic or any mention of
it in the archives.  Google fail.   However, I was able to find some screen
shots and pictures from the Chebyshev filter that I built from the docs
that I originally found here.  This should get you started if you want to
roll your own.  Mini-Circuits makes a filter if memory serves, but this is
a very cheap and fun project if you already have a little project box.
Screen shots show simulation and most importantly, the values of the parts
in the project.  The 0.06uH inductor was hand wound and tweaked till I got
it right.  S parameters were measured with the cover ON and the cover does
de-tune the circuit so you have to compensate before buttoning it up.

https://goo.gl/photos/UiqRrFRNYczvcbNh6

-Bob N3XKB

On Thu, Jul 16, 2015 at 11:49 AM, skipp Isaham via time-nuts <
time-nuts at febo.com> wrote:

> re: 10MHz Square to Sine Wave Conversion
>
> The GPSDO I recently acquired outputs a 10 MHz square wave. I'd like
> to convert it to a sine wave and I am looking for suggestions and info re
> any reasonable pre-made circuits and/or boards. No sense reinventing the
> wheel if I can avoid it.
>
> Otherwise I will start from scratch and make a new wheel....
>
> Thank you in advance for your replies.
>
> Regards,
>
> skipp
>
> skipp025 at yahoo dot com
>
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