[hpsdr] High Performance DDS Oscillator source

[Tayloe Dan-P26412]

Not knowing any better, I do see that there are SAW resonators in the
900 MHz region in the sub $4 range from Mouser (815-ASR915E).  Perhaps
these could be used in a reasonably low noise oscillator.

It would be interesting to discover if the HF trick could be used where
one crystal (SAW resonator) is used as an oscillator, and a couple
others are used as a filter to strip off excess sideband noise from the
oscillator signal

- Dan, N7VE

-----Original Message-----
From: Gerd Loch [mailto:g.loch at nt-electronics.de] 
Sent: Tuesday, August 14, 2007 12:50 AM
To: hpsdr at lists.hpsdr.org
Cc: Tayloe Dan-P26412
Subject: RE: High Performance DDS Oscillator source

I am working on a design with the AD9912 and I asked AD which
combination of clock generator frequency and clock multiplier is
expected to give the lowest jitter or phase noise.
The answer from AD was the best choice would be to use a 1 GHz sine
oscillator.

Any suggetions how to get an affordable 1 Ghz stable and "clean" sine
oscillator?

73 Gerd, DJ8AY


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