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# class08 - USC Signal Integrity Lab Course1 Ansoft High...

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1 USC Signal Integrity Lab Course1 Ansoft High Frequency Structure Simulator (HFSS) ELCT 762 USC

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2 Acknowledgement Thanks to Ansoft for providing free EMS packages to USC / Intel Signal Integrity Lab providing free software to APOGEE students allowing us to use some of their training materials
3 Signal Integrity Lab Located at Engineering building, 3D22 Software name: Ansoft HFSS 9 APOGEE students can get free software from Ansoft Contact: if you don’t know how

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4 What is HFSS High Frequency Structure Simulator Uses Finite Element Method to solve EM problems Frequency Domain Solution Full wave Solver
5

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6 Different Methods of Electromagnetic Analysis MOM
7 What is Finite Element Method (FEM) Software? FEM software is a design tool for engineers and physicists, utilizing rapid computations to solve large problems insoluble by analytical, closed-form expressions The “Finite Element Method” involves subdividing a large problem into individually simple constituent units which are each soluble via direct analytical methods, then reassembling the solution for the entire problem space as a matrix of simultaneous equations FEM software can solve mechanical (stress, strain, vibration), aerodynamic or fluid flow, thermal, or electromagnetic problems Suggested course: ELCT 891H, computational electromagnetic.

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8 FEM Problem Constraints Geometry can be arbitrary and 3-dimensional Model ‘subdivision’ is generally accomplished by use of tetrahedral or hexahedral (brick) elements which are defined to fill any arbitrary 3D volume Boundary Conditions (internal and external) can be varied to account for different characteristics, symmetry planes, etc. Size constraints are predominantly set by available memory and disk space for storage and solution of the problem matrix Solution is created in the frequency domain , assuming steady-state behavior
9 Example of Adaptive meshing Waveguide Filter at right (symmetry along top

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class08 - USC Signal Integrity Lab Course1 Ansoft High...

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