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PSS,spectreRF

  • Transient results as starting point in PSS

    Hello, Could we use the transient analysis results as a stabilization point (tstab) for PSS analysis? If so, how could we acheive it? Is there any documentation on this? Any inputs will be helpful. Prakash.
    Posted to RF Design (Forum) by pthoppay on Mon, Mar 10 2014
  • Re: pss insufficient memory problem

    Hi, 1. Yes, MMSIM10.1 and 12.1.X are a lot different. Better yet, go to 13.1. 2. That is not what I was asking for. In the netlist, there is a "save" statement. It will tell how many nodes and nets are saved. If you "save all" (for example), that can cause issues. Saving only selected...
    Posted to RF Design (Forum) by Tawna on Fri, Jan 24 2014
  • Re: pss insufficient memory problem

    For questions like this, it is better to file a Case with Customer Support . Your versions of spectre are very old. You should be using MMSIM 12.1.1 or better yet MMSIM 13.1 . You didn't mention how many nets/nodes that you were saving. Only save the most important ones. It is helpful to see the...
    Posted to RF Design (Forum) by Tawna on Fri, Jan 24 2014
  • RF Front end Receiver

    Hi, We are designing a RF Front end receiver in which we are proceeding with a PSS, PAC, etc analyses..... 1. We have plotted Conversion Gain Vs LO power by doing PSS followed by PAC analyses. So, can we plot the same CG by varying RF. 2. Can we plot Noise Figure Vs RF frequency. Please, get me the valuable...
    Posted to RF Design (Forum) by Kiran1507 on Mon, Jan 20 2014
  • spectreRF pss analysis : formula for PAE

    Hi, When using the direct plot option to trace out the PAE (= Pout - Pin / Pdc) after a pss analysis, if the PAE is added to the outputs the formula which gets added to Output window reads as follows : ((100.0 * harmonic ((spectralPower(i("/PORT1/PLUS" ?result "pss_fd") v("/P_out"...
    Posted to RF Design (Forum) by smarjeet on Thu, Nov 7 2013
  • Guidelines for Setting Pnoise/HBnoise Sidebands to Get Accurate Results

    I get quite a few questions from designers along the lines of "How do I set the number of pss/hb harmonics and pnoise/hbnoise sidebands in order to get accurate results?" Here are some general guidelines that I follow: The number of sidebands ( harmonics ) in the simulation can affect performance...
    Posted to RF Design (Weblog) by Tawna on Fri, Aug 5 2011
  • Q&A: TI Wireless Team Describes Advanced Phase-Noise Characterization for RF Oscillators Using SpectreRF

    In this interview, members of the Texas Instrument wireless group talk about the characterization effort initiated and completed last year between Cadence and IBM using TI RF designs as a pilot. The goal between the two teams was to optimize SpectreRF usage to successfully and efficiently simulate TI...
    Posted to RF Design (Weblog) by helenet on Wed, Jun 15 2011
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