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	Using The Composite Triple Beat Source to Speed up QPSS Analysis By Tawna Wilsey on January 14, 2010 Say you have a design with 4 input frequencies: 3164M (vco), 1449M (tone0), 1456M (tone1), 1442M (tone2). Currently when you do a qpss analysis, you are inserting a total of 4 separate ports in your schematic and running a simulation. There is a divide... Read more » Comments (0) Filed under: RF design, RF Block Simulation, Virtuoso Spectre, Virtuoso Spectre Simulator GXL, Spectre RF, Virtuoso Spectre Simulator XL, Harmonic Balance, spectreRF, RFIC, MMSIM, QPSS Analysis, Composite Triple Beat, CTB

	NPORT S-Parameter Model Enhancements By Tawna Wilsey on December 30, 2009 In MMSIM 7.2, two new parameters have been added to the Spectre nport primitive: datatrunc and causality . In MMSIM 7.1, passivity checking was added. The nport now has causality correction, passivity checking and enforcement, and the ability to remove... Read more » Comments (1) Filed under: RF design, Circuit design, RF Block Simulation, Virtuoso Spectre, Virtuoso Spectre Simulator GXL, Spectre, Spectre RF, Virtuoso Spectre Simulator XL, Harmonic Balance, spectreRF, MMSIM71, RFIC, MMSIM, Circuit simulation

	Analyzing Distortion With Spectre RF By Arthur Schaldenbrand on December 18, 2009 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... Read more » Comments (4) Filed under: RF design, Spectre RF, PSS, FFT, Distortion

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