|
 |
Recommendations on low phase noise synthesizer - RF Cafe Forums
|
| NJKirchner
|
 |
Post subject: Recommendations on low phase noise synthesizer
Posted: Mon Dec 28, 2009 8:58 pm
|
|
| |
| Captain |
 |
Joined: Mon Dec 28, 2009
8:27 pm
Posts: 5 |
I'm looking around for recommendations on a basic
CW functionality, extremely low phase noise synthesizer.
The Holzworth HS1001C is almost a perfect fit
but alternative recommendations are what I'm looking
to the RF Cafe brain trust for.
http://www.holzworth.com/synthesizers.htm
The Holzworth fits the ticket due to it's outstanding
phase noise, compact nature and software driven
interface. -120dBc/Hz @ 1G @10k offset or better
is what I'm looking for. Frequency ranges 10M
-1G So.... any recommendations? -Norm
Kirchner RF Systems Engineer National Instruments
|
|
| |
|
 |
|
d_erickson |
|
Post subject: Re: Recommendations on low phase noise synthesizer
Posted: Thu Dec 31, 2009 2:26 pm
|
|
Joined: Thu Dec 31, 2009
2:23 pm
Posts: 1 |
|
How about the Agilent E8663D-UNX.
-130 dBc/Hz
@ 1 GHz, 10 KHz offset
|
|
| |
|
|
|
|
NJKirchner |
|
Post subject: Re: Recommendations on low phase noise synthesizer
Posted: Thu Jan 07, 2010 11:30 am
|
|
| |
| Captain |
|
|
Joined: Mon Dec 28, 2009
8:27 pm
Posts: 5 |
d_erickson wrote:
How about the Agilent E8663D-UNX.
-130 dBc/Hz
@ 1 GHz, 10 KHz offset
I would call that the definition of overkill
to the extreme. Any other takers?
|
|
| |
|
|
|
|
windfreak |
|
Post subject: Re: Recommendations on low phase noise synthesizer
Posted: Tue Jan 12, 2010 7:54 pm
|
|
Joined: Tue Jan 12, 2010
7:47 pm
Posts: 2 |
This has a phase noise of better than 0.4 degrees
integrated from 100Hz to 1MHz. A very rough rule
of thumb says that you can use that for a phase
modulation with greater than 10 times that angle
(4 degrees). Its very cheap: $250.
http://www.windfreak.net/Tech.htm
|
|
| |
|
|
|
|
NJKirchner |
|
Post subject: Re: Recommendations on low phase noise synthesizer
Posted: Tue Jan 12, 2010 8:16 pm
|
|
| |
| Captain |
|
|
Joined: Mon Dec 28, 2009
8:27 pm
Posts: 5 |
Windfreak, Thanks for the thought, but that
device doesn't hit either the frequency range or
the phase noise requirements we're looking for.
The VCO on that part has a 10k SSB phase noise of
-89dBC at 2.2GHz that's worlds and worlds away from
the -120 I'm on the hunt for. To clarify
what I'm trying to do a little I'll give some more
detail. Currently our
PXI-5663 has pretty good phase noise performance
by taking advantage of the
PXI-5652. The 5663 is actually 3 different PXI
modules cabled together (LO PXI-5662, Downconverter
PXI-5601, IF Digitizer PXI-5622). Because
of it's modular nature, we can substitute our LO
with a different LO with even better phase noise
performance when the measurements call for it. Just
one of those 'Damn, that's sweet!' kind of capabilities
you get with a Modular Instrument approach to RF
test. |
|
Posted 11/12/2012
|
|
|
|
|
