[time-nuts] up converting 10MHz to 20MHz

Chris Albertson albertson.chris at gmail.com
Wed Dec 10 09:34:51 EST 2014

On Tue, Dec 9, 2014 at 4:47 PM, lincoln <lincoln at ampmonkeys.com> wrote:

> Hello,
>         I'm having a dumb idea, I have an MCU that uses a 20 MHz VC-TCXO.
> The micro, among other things, runs a loop and correct the oscillator by
> using a 1pps from a gps. I have a 10 MHz mv200 that I would like to try to
> use. I've got the control voltage handled but i will need to multiply its
> output up to 20 MHz.

Use a full wave rectifier made with four diodes.  This will double the
frequency but the resulting sine wow will not be pretty.  Then apply a 20
MHz filter.  You will like need to amplify this to drive the MCU.  I'd do
that early rather than later.

Chris Albertson
Redondo Beach, California

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