[time-nuts] Low phase noise VCO

Nick Foster bistromat at hotmail.com
Wed Feb 10 00:35:43 UTC 2010


> From: bill at iaxs.net
> To: time-nuts at febo.com
> Date: Tue, 9 Feb 2010 18:24:39 -0600
> Subject: Re: [time-nuts] Low phase noise VCO
> 
> Which leads me to ask a novice question:
> 
> Why not pull a 16 MHz crystal and multiply to 64 MHz?
> 
> If you count down from 64 to 10 MHz, isn't the multiplication inside the
> PLL?
> 
> Perhaps the noise is multiplied by 4, but would it work for the intended
> purpose?
> 
> Bill Hawkins

Can you do x4 multipliers? I thought odd-order harmonics were usually used for multipliers. I'd be happy to be wrong!

Nick
 		 	   		  
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