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spectreRF,Virtuoso Spectre Simulator XL,Virtuoso Spectre Simulator GXL,Harmonic Balance

  • 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
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