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Pittsburgh - August 17, 2004 - Ansoft Corporation (NASDAQ: ANST) today announced the immediate availability of SIwave™ v2. SIwave, a full-wave electromagnetic field simulator, analyzes signal- and power-integrity effects in high-performance printed circuit boards (PCBs) and integrated circuit (IC) packages.

SIwave's proprietary full-wave, finite-element technique allows designers to characterize simultaneous switching noise (SSN), inter-symbol interference, power and ground bounce, resonances, reflections and coupling between traces and power/ground planes. Engineers are now able to model entire PCBs and package structures using an analysis engine to generate both frequency- and time-domain results.

SIwave is fully integrated to layout tools such as Cadence Allegro and APD and Synopsys Encore. This integration adds significant value to existing EDA tools by enabling the accurate simulation and design of complex PCBs and IC packages consisting of multiple, arbitrarily shaped power and ground layers and any number of vias and signal traces.

Specific features and enhancements to SIwave include:

• Power Plane Impedance
• Signal Net Analysis (including coupled transmission lines)
• Resonant Mode Analysis
• SPICE Export
• Robust meshing
• Automated Geometry Cleanup
• Unlimited undo and redo
• Interpolating fast frequency sweep
• Decoupling capacitor model library with over 1200 components
• Frequency-dependent model for dielectric materials
• Interfaces to:
  • Cadence Allegro®
  • Cadence Advanced Package Designer (APD)
  • Zuken CR-5000
  • Synopsys Encore IC Package Designer
  • Mentor Board Station®
  • Mentor Expedition

To learn more, visit www.ansoft.com/products/si/siwave/.

To download an SIwave high-resolution screenshot that is suitable for publication, go to ftp://ftp.ansoft.com/techsup/download/web/siwave.tif.

About Ansoft
Ansoft is a leading developer of high-performance electronic design automation (EDA) software. Engineers use Ansoft software to design state-of-the-art electronic products, such as cellular phones, Internet-access devices, broadband networking components and systems, integrated circuits (ICs), printed circuit boards (PCBs), automotive electronic systems, power electronics, and fuel-cell technology. Ansoft markets its products worldwide through its own direct sales force and has comprehensive customer-support and training offices throughout North America, Asia, and Europe. For more information, please visit www.ansoft.com.

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