SpectreRF AppNotes and Tutorials....Still One of our Best Kept Secrets!
By Tawna Wilsey
on January 16, 2012
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...
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Filed under: RF design, Virtuoso Spectre Simulator GXL, Spectre, Spectre RF, Virtuoso Spectre Simulator XL, Harmonic Balance, VCO, MMSIM, Virtuoso, PSS, shooting newton, RF Measurement library, QPSS Analysis, RF Simulation, ADE, RF, RF spectre spectreRF, APS, envelope, fast envelope, mixer, Oscillator, phase noise, analog, HB, analog/RF, PNoise, HBnoise, SpectreRF tutorials, Spectre AppNotes
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Nport Application Note has been Updated and Re-Released
By Tawna Wilsey
on January 3, 2012
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...
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Filed under: RF design, RF Block Simulation, Virtuoso Spectre, Spectre, Spectre RF, Virtuoso Spectre Simulator XL, Harmonic Balance, spectreRF, MMSIM, RF Simulation, RF, APS, spectre spectreRF, nport, nport settings, analog, HB, analog/RF
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Guidelines for Maximizing Speed vs Accuracy for Harmonic Balance - Part 2
By Tawna Wilsey
on November 1, 2011
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...
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Filed under: RF design, Virtuoso Spectre Simulator GXL, Spectre RF, Virtuoso Spectre Simulator XL, Harmonic Balance, spectreRF, MMSIM, ADE-L, RF Simulation, RF, RF spectre spectreRF, HB, analog/RF
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Guidelines for Maximizing Speed vs Accuracy for Harmonic Balance - Part 1
By Tawna Wilsey
on October 7, 2011
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...
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Filed under: RF design, Virtuoso Spectre Simulator GXL, Spectre RF, Virtuoso Spectre Simulator XL, Harmonic Balance, spectreRF, RF Simulation, Analog Simulation, ADE, RF, APS, HB, analog/RF
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Measuring Fmax for MOS Transistors
By Arthur Schaldenbrand
on August 11, 2011
The following question has come up in comments: "How do I measure F max for an MOS transistor?" The measurement methodology -- testbench, analysis, calculator setup, stimulus, etc.-- does not change whether you are measuring bipolar transistors...
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Filed under: RF design, bipolar transistor, RFIC, Virtuoso, Circuit simulation, RF Simulation, RF, simulation, analog/RF, MOS transistors, fmax testbench, measuring Fmax, bsim3v3, Fmax
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Guidelines for Setting Pnoise/HBnoise Sidebands to Get Accurate Results
By Tawna Wilsey
on August 5, 2011
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...
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Filed under: RF design, Spectre RF, Harmonic Balance, spectreRF, PSS, shooting newton, RF Simulation, RF, RF spectre spectreRF, HB, analog/RF, PNoise, HBnoise
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Q&A: TI Wireless Team Describes Advanced Phase-Noise Characterization for RF Oscillators Using SpectreRF
By Helene Thibieroz
on June 15, 2011
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...
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Filed under: Spectre, Harmonic Balance, spectreRF, VCO, MMSIM, PSS, Circuit simulation, RF, APS, Oscillator, phase noise, analog, Nand Jha, HB, TI, analog/RF, PNoise, characterization, Ted Blank, Texas Instruments
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My Favorite nport Settings for Spectre and SpectreRF
By Tawna Wilsey
on March 23, 2011
The nport component located in analogLib can be used in circuits for Spectre and SpectreRF simulations. It is a scattering parameter (S-parameter) based distributed multi-port element. The nport truly is a "black box"… It can be used...
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Filed under: Spectre, Spectre RF, RFIC, Circuit simulation, RF Simulation, Analog Simulation, RF, nport, analogLib, nport settings
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Tips for Simulating a Transmit Mixer in SpectreRF
By Tawna Wilsey
on March 10, 2011
Some typical questions that I receive from newer SpectreRF users are: How do I simulate a transmit mixer? How do I look at both upper and lower sidebands? How do I set up my simulation for PAC and Pnoise? When I plot my data, how do the indexes correspond...
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Filed under: RF design, Spectre, Spectre RF, Harmonic Balance, spectreRF, MMSIM, ADE-L, RF Simulation, Analog Simulation, RF, mixer
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Measuring Transistor fmax
By Arthur Schaldenbrand
on December 7, 2010
There were several questions about measuring transistor f max in comments posted to my previous Measuring Transistor f t and Simulating MOS Transistor f t blog posts. So in this posting we will look at simulating transistor s-parameters and device characteristics...
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