[time-nuts] 10MHz to 32MHz?

Neville Michie namichie at gmail.com
Sat Apr 21 19:54:40 EDT 2007


> Hi All,
another method that avoids PLL and other sources of phase noise is to  
divide down to 2MHz, get a square wave signal,
low pass it to make a rough sine wave, feed it into a full wave  
rectifier, (pair of diodes) and the fundamental is eliminated and  
only even harmonics are left.
Lowpass to make rough sine wave  of 4 MHz and repeat three more times.
The full wave rectifier provides a MOD function of the sinewave,  
which has a DC offset and harmonics 2, 4, 6 etc.
This may be a low phase noise way of converting the frequencies.
Cheers, Neville Michie




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