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PSS

  • 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

  • New Time-Saving Feature in IC6.1.4 ISR2: Plot S-Parameter Data Directly From ViVA!
    If you haven't heard about it....there is a new feature in IC6.1.4 ISR2 which makes troubleshooting circuits containing nports ( s-parameters ) much easier and faster! Starting i n IC6.1.4 ISR2, you can now plot s-parameters directly in ViVA (without having to create a test bench and run a Spectre...
    Posted to RF Design (Weblog) by Tawna on Thu, May 20 2010

  • Phase noise sensitivity to tstab
    Hi, I am simulating a ~25GHz LC oscillator using harmonic balance and pnoise, then calculating the phase noise at 10MHz offset (this offset is added as a specific point to pnoise). Even with the most aggressive accuracy settings (harm=40,steadyratio=1e-3,reltol=1e-6,vabstol=1e-9,iabstol=1e-12), the phase...
    Posted to RF Design (Forum) by SonerYaldiz on Mon, May 3 2010

  • pss+pnoise analysis failure in Monte Carlo Simulation
    Hi, I am trying to run a Monte Carlo simulation of a 25GHz LC-VCO (vco followed by an ac-coupled buffer) for phase noise (mmsim-7.11, pss (harmonic balance) and pnoise). When I try a single run (no variability), the simulation finishes successfully without any errors or warnings. When I try running a...
    Posted to RF Design (Forum) by SonerYaldiz on Wed, Jan 27 2010

  • Analyzing Distortion With Spectre RF
    Greetings, In the previous appends, we looked at using Shooting Newton Periodic Steady-State analysis to analyze analog circuits. In this append, we will look at using Harmonic Balance Periodic Steady-State, HBPSS, to analyze analog circuits. HBPSS is widely used for RF and microwave circuit design....
    Posted to RF Design (Weblog) by Art3 on Fri, Dec 18 2009

  • Periodic Steady-State Analysis for DC-to-DC Converters
    In " Spectre RF by any other name ...", a non-RF application for Spectre RF's periodic steady-state analysis was introduced. An example of using periodic steady-state analysis [PSS] to simulate the dynamic performance: THD and SFDR, of a switched-current Digital-to-Analog Converter [DAC...
    Posted to RF Design (Weblog) by Art3 on Tue, Jun 30 2009

  • half harmonic frequency in PSS analysis
    I am designing an LC based voltage control oscillator. I want to simulate phase noise of my oscillator, but, I ALWAYS got a very bad phase noise performance (for example, -60 dBc/Hz @ 1 MHz offset, compared to my expectation -110 dBc/Hz). The reason is that in the periodic steady state analysis (PSS...
    Posted to Custom IC Design (Forum) by Andy Liu on Thu, Apr 30 2009

  • half harmonic frequency in PSS analysis
    I am designing an LC based voltage control oscillator. I want to simulate phase noise of my oscillator, but, I ALWAYS got a very bad phase noise performance (for example, -60 dBc/Hz @ 1 MHz offset, compared to my expectation -110 dBc/Hz). The reason is that in the periodic steady state analysis (PSS...
    Posted to RF Design (Forum) by Andy Liu on Thu, Apr 30 2009

  • path to PLL_workshop of Noise Aware PLL Design Flow
    hello, where is the folder of PLL_workshop? Is it with mmsim71 or ic5141? we have mmsim71 and ic5141_usr5 here.
    Posted to RF Design (Forum) by DZhu on Sun, Mar 22 2009
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