[time-nuts] 10MHz to 25MHz

Richard (Rick) Karlquist richard at karlquist.com
Thu Jan 19 00:06:04 EST 2017

On 1/18/2017 6:34 PM, David wrote:

> An alternative very simple design I might try is a variation of the
> active frequency multiplier where the 5th harmonic is filtered
> directly from the output of the digital divide by two stage.
That's a useful trick to reduce the filtering burden.  Having said
that, if you need good spectral purity, the filtering is still
going to be very non-trivial.  The original poster is obviously
not an expert in filters and will not be successful trying that
approach, except for very low performance design.  Even if
you are a filter expert, components are hard to get.

Rick N6RK

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