Sonnet User's Guide - Sonnet Software

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Sonnet User’s Guide New Features Below is a summation of the major new features in release 12 of Sonnet. For changes from release 11, refer to “Changes,” page 27. Multi-core CPU Parallel Processing on a Single computer: In Release 12, Sonnet’s electromagnetic (EM) simulations are performed more quickly by utilizing multiple CPU cores on the same computer in parallel, making complete use of the latest CPU technology from Intel and AMD. The new EM analysis engine creates multiple processes, or threads, each of which solves a different part of the solution matrix on a different CPU core—all at the same time. The result is a dramatic decrease in overall simulation time. There are two new solver engine products available: • Desktop Solver (2 parallel processing threads) • High-Performance Solver (up to 8 parallel processing threads) The maximum number of cores enabled by your license, and supported by your hardware capability, is automatically used on your system. If you wish to use fewer cores on your computer than the maximum possible, you may limit the number of cores available using the Admin ⇒ Thread Control command on the Sonnet task bar. Variables for Material Properties and Thicknesses: You may now control your materials parametrically using variables to control material properties and thicknesses, as well as for lumped element values in ideal Components. With this new feature comes the ability to parametrically control: • Dielectric thickness • Dielectric loss properties • Metal Thickness • Metal loss properties • Ideal Component properties 24
Chapter 2 What’s New in Release 12 Variables and Equations: This release introduces a new variable and equation feature that enables you to control circuit properties using equations based on mathematical functions (such as sine, cosine, natural logarithm, etc.). A circuit property can be a function of one or more independent variables to provide advanced capabilities like: • Simulating temperature effects on circuit response by defining metal or dielectric loss as a function of a temperature variable • Defining your own frequency dependent properties by using the new FREQ constant in an equation • Enforcing geometry scaling by defining a variable as a multiple of another variable • Controlling a circuit property based on a table of data from an external text file For more information on variables and equations, please see Chapter 10, “Parameterizing your Project” on page 129. Radial Dimension Parameters: A radial parameter is a new type of dimension parameter that allows you to fix one end of a parameter then radiate out from that fixed point; the direction is not restricted to the x or y direction, but may extend at an angle. See “Radial Dimension Parameters,” page 144 for more information. Enhanced Meshing Algorithm: Sonnet’s default meshing algorithm has been improved for circuits containing large ground planes and planar shields, irregular edges, and interior via connections. Circuits containing these features are accurately meshed with dramatic reduction in memory usage and analysis time. Matrix solve time reduction of 10x or more are not uncommon for such circuits. Gerber Translator: Release 12 introduces a new Gerber translator which allows you to perform single layer or multi-layer import of Gerber files to create a Sonnet project. You may also export a Sonnet project and create Gerber formatted output files of your circuit. Please refer to Chapter 5, "The Gerber Translator" in the Translators manual. New Parameter Sweep Analysis Definitions: The EM Analysis Engine also has new parameter sweep analysis types useful for tolerance studies and design-formanufacturing testing. The new parameter sweeps include Corner Sweep Analysis, Sensitivity Sweep Analysis and Mixed Sweep Combinations. For details about these sweeps, please see Help for details by looking up Corner Sweep, Sensitivity Sweep or Mixed Sweep in the Index. 25
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