Ansoft High Frequency Structure Simulator v10 User’s Guide
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Ansoft HFSS Fundamentals
What is HFSS?
HFSS is a high-performance full-wave electromagnetic(EM) field simulator for
arbitrary 3D volumetric passive device modeling that takes advantage of the
familiar Microsoft Windows graphical user interface. It integrates simulation,
visualization, solid modeling, and automation in an easy-to-learn environment
where solutions to your 3D EM problems are quickly and accurately obtained.
Ansoft HFSS employs the Finite Element Method(FEM), adaptive meshing, and
brilliant graphics to give you unparalleled performance and insight to all of your
3D EM problems. Ansoft HFSS can be used to calculate parameters such as S-
Parameters, Resonant Frequency, and Fields. Typical uses include:
Package Modeling – BGA, QFP, Flip-Chip
PCB Board Modeling – Power/Ground planes, Mesh Grid Grounds,
Backplanes
Silicon/GaAs - Spiral Inductors, Transformers
EMC/EMI – Shield Enclosures, Coupling, Near- or Far-Field Radiation
Antennas/Mobile Communications – Patches, Dipoles, Horns, Conformal
Cell Phone Antennas, Quadrafilar Helix, Specific Absorption Rate(SAR),
Infinite Arrays, Radar Cross Section(RCS), Frequency Selective
Surfaces(FSS)
Connectors – Coax, SFP/XFP, Backplane, Transitions
Waveguide – Filters, Resonators, Transitions, Couplers
Filters – Cavity Filters, Microstrip, Dielectric
HFSS is an interactive simulation system whose basic mesh element is a
tetrahedron. This allows you to solve any arbitrary 3D geometry, especially those
with complex curves and shapes, in a fraction of the time it would take using
other techniques.
The name HFSS stands for High Frequency Structure Simulator. Ansoft
pioneered the use of the Finite Element Method(FEM) for EM simulation by
developing/implementing technologies such as tangential vector finite elements,
adaptive meshing, and Adaptive Lanczos-Pade Sweep(ALPS). Today, HFSS
continues to lead the industry with innovations such as Modes-to-Nodes and Full-
Wave Spice™.
Ansoft HFSS has evolved over a period of years with input from many users and
industries. In industry, Ansoft HFSS is the tool of choice for high-productivity
research, development, and virtual prototyping.
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