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PNoise

  • Modeling Oscillators with Arbitrary Phase Noise Profiles
    When you need to include noisy oscillators in SpectreRF transceiver simulations, you have at least 3 options: 1) Semi-autonomous simulation is the most accurate approach, recommended whenever the transistor-level model of the oscillator is available. 2) rfLib/osc model is less accurate but it’s...
    Posted to RF Design (Weblog) by Tawna on Thu, May 24 2012

  • High frequency quadrature VCO design with good phase noise
    Hello everyone I am a newbie engineer starting my career in RF IC design and working on designing a high frequency VCO (38 GHz) with good phase noise characteristics. I am using Cadence IC6.1.5-64b.500 version and spectre simulator for the schemtic design and simulations. I have to do everything from...
    Posted to Custom IC Design (Forum) by rohan kr on Thu, Mar 29 2012

  • Re: Phase Noise vs frequency graph problem
    Hello Frank, Really appreciate your help..I have put my latest schematic in this post..if you have time to have a look...I haven't used the oscillator mode in pss analysis.. I have a few other problems too which i will be posting separately.. I am having trouble getting quadrature output..i.e. the...
    Posted to Custom IC Design (Forum) by rohan kr on Thu, Mar 29 2012

  • Re: RE: Phase Noise vs frequency graph problem
    Hello Tawna, I am very thankful for your reply...Read a lot of posts by you and Andrew in various topics and a fan of your knowledge and work.. I got the correct graph yesterday when I changed errpreset to 'moderate' and putting tstab as 60n..but the values of phase noise was aroung -140dbc/hz...
    Posted to Custom IC Design (Forum) by rohan kr on Thu, Mar 29 2012

  • Re: Phase Noise vs frequency graph problem
    Thanks Frank for replying. Yes, I have seen that post-it explains the equation which spectre uses to find the pnoise...but it doesnt help me to get the right graph with negative values of pn. I am doing the pss-pnoise simulation using the following settings: PSS : Harmonic Balance beat freq - 37.93G...
    Posted to Custom IC Design (Forum) by rohan kr on Wed, Mar 28 2012

  • Phase Noise vs frequency graph problem
    Hello I am a newbie engineer starting my career in IC design and working on a high frequency oscillator (38 GHz). I am using Cadence IC6.1.5-64b.500 version and using spectre simulator for the schemtic design and simulations. I am having doubts about my 'pnoise' analysis. All the research papers...
    Posted to Custom IC Design (Forum) by rohan kr on Wed, Mar 28 2012

  • Jitter from pnoise simulation
    I'm desinnig a Time to digital converter and I would like to simulate the jitter of a driven buffer having a rising time of 350 ps. In my schematic, the buffer is driven by vpulse (ideal CLK @ 2 MHz) and I would like to simulate his output jitter. My setting of pss simulation is as follow: Beat frequency...
    Posted to RF Design (Forum) by moez on Fri, Mar 9 2012

  • Why is the Noise Factor that I've counted inconsistent with the result of Pnoise?
    Hi everyone, I've simulated the noise factor of Mixer ne600p in rfExamples library with PSS+Pnoise. With the Noise Summary printed, I calculated the Noise Factor, which is (total noise at output - load noise at output)/(source noise at output), then Noise Figure can be abtained with 10*lg(Noise Factor...
    Posted to RF Design (Forum) by xxgeneral on Thu, Feb 16 2012

  • SpectreRF AppNotes and Tutorials....Still One of our Best Kept Secrets!
    Some of you may remember the blog written several years ago " Shhhhh...SpectreRF Tutorials and AppNotes - One of Our Best Kept Secrets ". Well, the more things change...the more things stay the same! The location of these tutorials and appNotes still seems to be one of our best kept secrets...
    Posted to RF Design (Weblog) by Tawna on Mon, Jan 16 2012

  • How to run Pnoise simulation with ocean
    Hi everyone, I have written an oceanscript to run pnoise. I am loading into CIW but I am getting "cannot handle (nil-0)" error in CIW window. After trying lots of things, I have directly saved the Spectre Oceanscript from ADE and tried to load it also but I have got same problem. Then, I have...
    Posted to Custom IC SKILL (Forum) by yayla on Mon, Dec 26 2011
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