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RF design

  • Setting Up Harmonic Balance - Part 1

    This is the first of a series of Blogs to talk about how to fill out the forms for Harmonic Balance. I will include our suggested settings and some helpful hints. I will add to these over time as new things come up both from us and our customer base. Harmonic Balance works in the frequency domain and...
    Posted to RF Design (Weblog) by dondnile on Wed, Mar 18 2009
  • Re: Warnings during the use of Spectre

    Hi, Lawrence Thanks for your kind help! That was useful! I solved my first and third problems, by modifying my .cshrc file. It turns out that I didn't set the right path for MMSIM and Calibre. As for problem 2, I am still bugging the person who is responsible for the licenses. Thank you again! Regards...
    Posted to RF Design (Forum) by Starry on Fri, Mar 6 2009
  • Re: Parasitic capacitances from printed DC operating point of Spectre (with BSIM3v3)

    Hi Jim, Thank you very much for the information. I am having a look at the document you mentioned. However, it seems that I am not being able to figure out how to calculate the real intrinsic Cgs, for example. Did you really see Cgs, Cgsov parameters like this from Results --> Print --> DC operating...
    Posted to RF Design (Forum) by Dancing Wave on Thu, Mar 5 2009
  • Parasitic capacitances from printed DC operating point of Spectre (with BSIM3v3)

    Hi all, I have a question to ask about BSIM model, I hope it will not take too much time for you to answer this question. Since now I am using a BSIM3.3 0.18-um CMOS model in my work (Cadence, Spectre) and I am wondering about how to figure out the total parasitic capacitances of a transistor. In PSPICE...
    Posted to RF Design (Forum) by Dancing Wave on Wed, Mar 4 2009
  • Your Virtuoso MMSIM Portfolio 2009 Performance Outlook

    John Pierce, Product Marketing Director for Virtuoso Simulation application gives us some words of wisdom when it comes to getting the most from your simulation investment in 2009. John writes: “In 2008 your investment in Virtuoso MMSIM had tremendous returns: Spectre ‘Turbo’ Technology...
    Posted to Custom IC Design (Weblog) by deana on Tue, Feb 10 2009
  • SpectreRF Turbo: Parasitic Reduction

    I wanted to share some experiences I had with SpectreRF-Turbo and Parasitic reduction on a recent large benchmark. The things I learned may be helpful to anyone who wants to get the most out of turbo and parasitic reduction. Available in MMSIM7.0.1 and later for RF, turbo accelerates simulation in three...
    Posted to RF Design (Weblog) by dondnile on Mon, Feb 2 2009
  • SpectreRF GUI Support for MMSIM 7.1

    MMSIM 7.1 has just been released! The following IC release GUIs support the new MMSIM7.1 features: IC5.1.41.500.5.129 (However, USR6 or later is strongly recommended) IC6.1.1 ISR65 IC6.1.3 ISR5 And later subversions. For more information, similar tips, and design topics, please visit sourcelink.cadence...
    Posted to RF Design (Weblog) by Tawna on Fri, Jan 23 2009
  • MMSIM 7.1 Enhancements Benefit RF Designers!

    The 7.1 release of MMSIM is scheduled for mid-January. There are many exciting RF enhancements that will be useful for RF designers. 1. Three new RF analyses using the harmonic balance engine, have been introduced to make the Spectre RF easier to use: HB, HBAC, and HBnoise. HB analysis (hb) provides...
    Posted to RF Design (Weblog) by Tawna on Wed, Jan 14 2009
  • Tip of the Week: Guidelines for getting accurate HB QPSS/QPNoise results

    Two of the most important parameters for accuracy are: (1) maxharms (2) oversample maxharms: The accuracy of HB is greatly dependent on the number of harmonics chosen. As a general rule, you should simulate with with maxharms [5 3] and (if memory allows) re-simulate with maxharms [7 3] to see if the...
    Posted to RF Design (Weblog) by Tawna on Fri, Jan 9 2009
  • What's New With Virtuoso?

    If you were wondering what's new with Virtuoso you may want to check out the latest webinars we offered this fall. The IC6.1 Virtuoso Platform, proven through silicon, enables you to "mind those gaps" by delivering customer proven productivity, product quality and schedule predictability...
    Posted to Custom IC Design (Weblog) by deana on Mon, Dec 8 2008
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