about noise analysis of vco

[satyasiva]

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

 

[zyyang]

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

 

[firewind]

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.

 

[ashishjain_1000]

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

 

[satyasiva]

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

 

[option318]

hi satyasiva, you can use ADS analysis noise.

 

[satyasiva]

hi satyasiva, you can use ADS analysis noise.

what is ADS? is it some tool name?

 

[trashbox]

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

 

[ustcjin]

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

 

[Sadegh.j]

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

 

[analog_prodigy]

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

 

[jecyhale]

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

it is up to your frequency.

 

[meseasky]

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

 

[Sadegh.j]

Hi

I am using ADS.

Read Hajimiri paper regarding noise sources.

cheers