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STOIKOV
Joined: 18 Nov 2005
Posts: 295
Helped: 6
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 29 Oct 2006 1:18 VCO phase noise |
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For a VCO I measured in lab -30dBradČ/Hz of phase noise. Most of the examples I've seen express the phase noise in units of dBc/Hz, which I understand is the ratio of noise with respect of the carrier at a frequency offset.
What does radČ/Hz mean ??
regards !
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RFDave
Joined: 18 Feb 2004
Posts: 346
Helped: 45
Location: NE USA
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30 Oct 2006 14:02 Re: VCO phase noise |
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Sounds like you measured integrated jitter instead. That's an unusual unit, what did you use to measure it?
Dave
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STOIKOV
Joined: 18 Nov 2005
Posts: 295
Helped: 6
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30 Oct 2006 18:06 Re: VCO phase noise |
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| I used a vector signal analyzer Agilent 89410A. Want to measure the phase noise but the units radČ/Hz confuse me. Someone has used a similar instrument to obtain phase noise in dBc/Hz units ??
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biff44
Joined: 24 Dec 2004
Posts: 1835
Helped: 244
Location: New England, USA
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30 Oct 2006 20:14 Re: VCO phase noise |
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www.minicircuits.com/appnote/vco15-6.pdf
http://surf.syr.edu/projects/vco/Phase_Noise.htm
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RFDave
Joined: 18 Feb 2004
Posts: 346
Helped: 45
Location: NE USA
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31 Oct 2006 0:27 Re: VCO phase noise |
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Play around with the marker menu. That is where Agilent likes to hide those sorts of things.
Dave
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