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Ansys HFSS


Ansys HFSS is the industry’s gold standard and perfect tool of high-frequency electromagnetic field simulation, which can truly solve any 3D structured electromagnetic field. With its vast adaptability, its scope of application ranges from DC to light wavebands. It offers a simple and easy-to-use graphical user interface, automatic mesh generation and adaptive mesh refinement, while also support broadband adaptive meshing. Integrated with a highly-performance electromagnetic field solver, solutions can be acquired with the utmost precision, reliability, and stability. Users can apply it to all engineering problems without the need to master the profound knowledge of the electromagnetic field or to repeatedly test on different meshing, as simulation results with high-precision will always come quickly and swiftly. Ansys HFSS supports different electromagnetic field solvers, including frequency domain, time domain, eigen mode, characteristic mode, integral equation method, physical optics method, multi-layer planar structure method of moment, domain decomposition, finite array antenna solvers, adding with sensitivity analysis, it supports hybrid computing of multiple algorithms and can reliably solve all types of high frequency and radiation problems. At the same time, it can conduct bidirectional coupling simulation and system simulation with Ansys structure/fluid software and circuit/system software. 
Product features
Ansys HFSS uses high precision FEM, 3D MoM, and SBR for larger structures, effectively achieving high precision electromagnetic simulation analysis. Ansys HFSS simulation package includes the following solvers, which can solve all types of electromagnetic problems, from smaller to larger sizes:
  • Frequency domain
  • Time-domain
  • Integral equation
  • Hybrid technology
  • Shooting and bouncing rays
  • Physical optics
  • Physical diffraction theory
  • Creeping waves
HFSS hybrid technology
FEM-IE hybrid technology is based on HFSS FEM, IE MoM, and Ansys domain decomposition method (DDM) and is used to solve complex large systems. By choosing the right solver with high-precision electromagnetic analytic method finite element HFSS, it can solve and analyze the domains of a large system or installed platform, and further analyze the electromagnetic field distribution of the antenna, radio frequency components, and the surrounding environment with the purpose to expand system integrity when developing the products and reduce development time. 
FEM (frequency domain)
FEM is a high-precision and high-functionality 3D electromagnetic field analysis method. The FEM of HFSS comes with high-precision automatic meshing technology, which can accurately conduct finite element analysis with the meshing. Engineers can calculate the SYZ parameters, resonant frequency, and visualize the electromagnetic fields, to design component models and evaluate signal quality, transmission path loss, impedance mismatch, spurious coupling, and far-field radiation via the FEM in HFSS. Typical application fields include antenna/mobile communications, high-speed circuits, radio frequency components, waveguides, connectors, and EMI/EMC analyses. 
FEM transient state (time domain)
The FEM time-domain solver is used to analyze transient state electromagnetic fields, applicable on time domain reflectometry (TDR), lighting strikes, ground penetrating radar (GPR), electrical static discharge (ESD), electromagnetic interference (EMI), and other typical application fields. Through the high-precision meshing technology similar to the frequency-domain solver, time-domain analysis of high-precision can be obtained without repeated adjustments for meshing or complex numerical analysis procedures such as discriminant numerical convergence. The time-domain solver can be supplementary to the frequency-domain HFSS solver, allowing the engineers to comprehend the time domain and frequency domain electromagnetic characteristics on the same mesh. 
Integral equation
Integral equation (IE) solver uses 3D method of moments (MoM) technology to effectively solve the open radiation and scattering problems. The IE is suitable for scattering studies of antenna design, antenna placement, and radar cross-section (RCS). Such solver uses multilevel fast multipole method (MLFMM) or adaptive cross approximation (ACA) to reduce simulation resources and time for the solution. Large-scale problems can be solved by this tool.
SBR+ is the only commercial electromagnetic solver that can achieve SBR,  while it can adopt methods including the physical theory of diffraction (PTD), the uniform theory of diffraction (UTD), and creeping way at the same time, analyzing the performance of the installed antenna on a large electrical platform with wavelengths of more than a thousand times. SBR+ uses ray tracing technology to conduct modeling analysis with the surface induction current on the antenna platform or the scattering geometric conditions of conductors and dielectrics. With the SBR+ solver, engineers can quickly and precisely predict the antenna far-field radiation pattern, near-field distribution, and coupling relationship between antennas (S parameters) of medium, large and extra-large platforms. It can execute transmission and reflection modeling in vehicles, aircraft, radome, and other large structures. In addition, HFSS SBR+ can efficiently conduct radar feature modeling, including ISAR imaging of large targets.
HFSS 3D Layout
HFSS 3D layout is used on the layered geometric analysis and optimization platforms of PCB, IC packaging, and passive components. It is suitable for the analysis of the integrity of PCB and packaging signals. The application fields include high-speed serial links in areas with complex shunt, transmission lines on uneven planes of reference, planar antennas, and millimeter-wave circuits. Engineers can draw or import geometric shapes, analyze their electromagnetic features, and calculate the radiated field, impedance, propagation constant, S-parameter, or insertion/return loss.
Antenna toolkit
HFSS offers an antenna design toolkit, which is an independent and practical in-built application that can automatically execute the composition and creation of more than 50 types of antennas in geometric shapes. This tool allows the antenna designers to quickly model and analyze common antennas and helps the new users to learn HFSS for antenna design simulation. With just the frequency band and material, antenna models will be automatically composed and generated for further HFSS simulations. 
HPC High-performance computing
Ansys HPC conducts parallel computing to process large-scale and complex physical models, using multithreading, spectral decomposition method (SDM), domain decomposition method (DDM), and various hybrid processing methods to significantly increase solving efficiency and shorten the computing time. 


Application fields


5G communication solutions
Automotive electronic solutions
RF component solutions
PCB solutions
EMC/EMI solutions
Connector solution