[time-nuts] State of the art of crystal oscillator measurements
KA2WEU at aol.com
KA2WEU at aol.com
Thu Aug 11 07:03:03 EDT 2016
the difference between the two phase noise FWSP systems is the lower noise
internal 10 MHz reference crystal oscillator (optimized ) as well as
also some of the internal FSWP circuits custom optimized . The output power
was 17 dBm, but we also have build one oscillator with 12 dBm output power
and noise similar values.
This is part of a PhD project which I supervise . For values so close to
the carrier you need a very low noise power supply and a well shielded
Faraday cage . The measurement with ca 100 correlation took about 2 hours.
Also the heating circuit needs to be low noise and well decoupled .
The 100 Hz value of the better analyzer seems suspicious , It needs to be
All very exciting and time consuming .
In a message dated 8/10/2016 11:02:25 P.M. Eastern Daylight Time,
mfeher at eozinc.com writes:
These seem extremely fantastic results for a 100 MHz oscillator. I am
curious what the Po of the oscillators are Regards - Mike
Mike B. Feher, EOZ Inc.
89 Arnold Blvd.
Howell, NJ, 07731
From: time-nuts [mailto:time-nuts-bounces at febo.com] On Behalf Of Tom Van
Sent: Wednesday, August 10, 2016 9:19 PM
To: Discussion of precise time and frequency measurement
Cc: enrico.rubiola at gmail.com
Subject: Re: [time-nuts] State of the art of crystal oscillator
Attached is a GIF of the table Ulrich wants to share.
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