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Virtuoso Spectre Simulator XL,RF design,spectreRF

  • Simulating Crystal Oscillators is Much Easier in MMSIM12.1 - Part 2

    Greetings, Simulating crystal oscillators got a lot easier in MMSIM12.1... We have made enhancements to both Harmonic Balance and transient analyses. In Part 1 , I discussed Improvements to the Harmonic Balance use model. With the new streamlined Choosing Analyses form, you now can focus on getting your...
    Posted to RF Design (Weblog) by Tawna on Thu, Dec 20 2012
  • Simulating Crystal Oscillators is Much Easier in MMSIM12.1 - Part 1

    Greetings! Simulating Crystal Oscillators got a lot easier in MMSIM12.1... We have made enhancments to both Harmonic Balance and Transient analyses. In Part 1, I’ll cover Improvements to the Harmonic Balance use model. With a streamlined Choosing Analyses form you can now focus on the simulation...
    Posted to RF Design (Weblog) by Tawna on Wed, Dec 19 2012
  • Nport Application Note has been Updated and Re-Released

    Happy New Year! After many requests, I set aside some time and updated the Using the nport in Spectre and SpectreRF Simulations appNote for MMSIM 11.1. You may download the appNote on Cadence Online Support . More nport enhancements are planned, so stay tuned! If you have any comments or questions, please...
    Posted to RF Design (Weblog) by Tawna on Tue, Jan 3 2012
  • Guidelines for Maximizing Speed vs Accuracy for Harmonic Balance - Part 2

    I am often asked for guidelines on maximizing speed vs. accuracy for SpectreRF harmonic balance simulations . Today, I'll discuss part 2 of the 3 part series consisting of: Which Engine: Spectre or APS? Oversample vs Number of Harmonics Harmonic Trimming The first post in this series focused on the...
    Posted to RF Design (Weblog) by Tawna on Tue, Nov 1 2011
  • Guidelines for Maximizing Speed vs Accuracy for Harmonic Balance - Part 1

    Greetings, I am often asked for guidelines on maximizing speed vs. accuracy for SpectreRF harmonic balance simulations. In a series of 3 blogs, I'll discuss some of the "knobs" that you can tweak, those being: * Which Engine: Spectre or APS? * Oversample vs Number of Harmonics * Harmonic...
    Posted to RF Design (Weblog) by Tawna on Fri, Oct 7 2011
  • Using The Composite Triple Beat Source to Speed up QPSS Analysis

    Say you have a design with 4 input frequencies: 3164M (vco), 1449M (tone0), 1456M (tone1), 1442M (tone2). Currently when you do a qpss analysis, you are inserting a total of 4 separate ports in your schematic and running a simulation. There is a divide by 2 in your circuit, so one of the frequencies...
    Posted to RF Design (Weblog) by Tawna on Thu, Jan 14 2010
  • NPORT S-Parameter Model Enhancements

    In MMSIM 7.2, two new parameters have been added to the Spectre nport primitive: datatrunc and causality . In MMSIM 7.1, passivity checking was added. The nport now has causality correction, passivity checking and enforcement, and the ability to remove small couplings terms from the input s-parameter...
    Posted to RF Design (Weblog) by Tawna on Wed, Dec 30 2009
  • 2009 RFIC Symposium in Boston - Are You Going?

    If you are an RFIC designer then I hope you are planning on attending the 2009 RFIC Symposium and the International Microwave Symposium (IMS) which will be held in Boston, Massachusetts, as the centerpieces of Microwave Week 2009, scheduled from Sunday June 7 through Friday June 12, 2009. The 2009 RFIC...
    Posted to RF Design (Weblog) by TomC on Mon, Apr 27 2009
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