about noise analysis of vco

• Aug 7, 2007

• #1

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satyasiva

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how to do the noise analysis of vco. and what are the tools needed?

 

• Aug 7, 2007

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zyyang

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i use the spectreRF to analyse the vco's phase-noise

 

• Aug 8, 2007

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firewind

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it's been a while since I did it, I think you need to run ac first then do phase-noise analysis. They had step by step of howto various devices like VCO LNA Mixer in spectreRF manual. You can also consult that as well.

 

• Aug 8, 2007

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ashishjain_1000

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Hi firewind, can you telll how to do it for VCO?Can you give me the document or send t he link?
THanks,
Ashish.

 

• Aug 8, 2007

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satyasiva

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hi amarnath ,
can u please send me the paper which u have referred " ken kunderts paper on jitter analysis in freq sysnthesizers"

 

• Aug 9, 2007

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option318

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hi satyasiva, you can use ADS analysis noise.

 

• Aug 9, 2007

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satyasiva

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option318 said:

hi satyasiva, you can use ADS analysis noise.

Click to expand...

what is ADS? is it some tool name?

 

• Aug 9, 2007

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trashbox

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ADS means Advanced Design System, it is a simulator from Agilent.

 

• Aug 9, 2007

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ustcjin

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ADS = Agilent Advanced Design System

For VCO noise analysis, I use spectre.
First run pss analysis and then pnoise analysis, you can get the phase noise plot of the VCO in dBc/Hz

 

• Aug 9, 2007

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Sadegh.j

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Well it pretty much depends on the simulator you are using.

In ADS, you use the HB controller will a non linear noise and the pnmx will give you the phase noise.

Cheers

 

• Aug 9, 2007

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analog_prodigy

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ADS from agilent is an excellent tool for designing passives and RF design. If your vco contains LC parasitics, you can simulate better in ADS for high frequencies

 

• Apr 1, 2008

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jecyhale

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satyasiva said:

how to do the noise analysis of vco. and what are the tools needed?

Click to expand...

it is up to your frequency.

 

• Apr 1, 2008

• #13

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meseasky

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ADS is good and convenient, but i believe SpectreRF is more accurate.

 

• Apr 1, 2008

• #14

Sadegh.j

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Hi

I am using ADS.

Read Hajimiri paper regarding noise sources.

cheers