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phase noise,pnoise

  • Re: Is the issue of "positive phase noise" related to MMSIM version?

    Hi bjbit, Andrew and I have conferred on your issue. Given that this is going to require some more detailed investigation and checking with supported releases, it would be best if you contact Customer Support for assistance. best regards, Tawna
    Posted to RF Design (Forum) by Tawna on Fri, Feb 21 2014
  • Re: Is the issue of "positive phase noise" related to MMSIM version?

    Hi bjbit, This is discussed in Cadence Online Support article 1832229. Here is the complete link: http://support.cadence.com/wps/mypoc/cos?uri=deeplinkmin:ViewSolution;solutionNumber=1832229 Starting around MMSIM 7.2, there is a parameter called "lorentzian". This parameter determines if the...
    Posted to RF Design (Forum) by Tawna on Thu, Feb 20 2014
  • PN function in Visualizaion & Anaysis XL Calculator

    Hi, I have a question about the PN function, available in the Calculator. Is an output phase noise spectrum is a signle sideband or a double sideband spectrum? To avoid any confusions, I mean the 'double sideband' by a spectrum 3dB more than the 'single sideband' in magnitude. Thanks...
    Posted to RF Design (Forum) by JaeWook on Tue, Feb 18 2014
  • 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
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