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RF

  • 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

  • Measuring 2-Tone Intermodulation Using Envelope-Following Analysis
    From time to time, SpectreRF users simulate very large, extracted-view circuits in 2+ tone QPSS. In many of those cases, memory requirements exceed the available resources. When that happens and small-signal approximations aren’t applicable, the user is typically stuck. The solution below and attached...
    Posted to RF Design (Weblog) by Tawna on Wed, May 16 2012

  • Guidelines for Maximizing Speed vs. Accuracy in SpectreRF simulations - Part 3
    Several months ago, I started a 3 part series on Guidelines for Maximizing Speed vs Accuracy for Harmonic Balance simulations. Today, I'll discuss part 3 of the 3 part series consisting of: Which Engine: Spectre or APS? Oversample vs Number of Harmonics Harmonic Trimming The first and second posts...
    Posted to RF Design (Weblog) by Tawna on Wed, Mar 7 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

  • 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

  • Need experienced PCB designer
    I am looking for an experienced PCB Layout Engineer using Cadence Allegro, Altium, PADS ... for an immediate vacancy in Colorado. US citizens can contact me at Hiring.Engineering.Dept@gmail.com No recruiters!
    Posted to PCB Design (Forum) by Gaile on Mon, Sep 19 2011

  • Hiring PCB, layout Designer
    Are you a PCB layout engineer with a Wide variety of design experience? We need a PCB Layout engineer experienced in areas ranging from RF to high-speed circuit board layout. You will work from schematics, diagrams, sketches & verbal instructions to produce PCB layouts that meet requirements, prepare...
    Posted to Jobs (Forum) by Gaile on Fri, Sep 16 2011

  • GTC Panel: Getting Best Use From Older IC Process Nodes
    Time for a mainstream revolution? That was the title of a lively panel discussion at the Global Technology Conference ( GTC ) Aug. 30. Panelists noted that there's still a lot of activity at 65nm and above. They discussed why this is true, whether mature nodes can be retrofitted with new capabilities...
    Posted to Industry Insights (Weblog) by rgoering on Mon, Sep 5 2011
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