ANSYS HFSS Capabilities

High-Frequency Electromagnetic Solvers

ANSYS HFSS uses the highly accurate finite element method (FEM), the large-scale method of moments (MoM) technique and the ultra-large-scale asymptotic method of shooting and bouncing rays (SBR) with advanced diffraction and creeping wave physics for enhanced accuracy (SBR+). The ANSYS HFSS simulation suite has the following solvers to tackle manifold EM problems involving electrically small to enormous structures:

HFSS

  • Frequency Domain
  • Time Domain
  • Integral Equations
  • Hybrid Technologies

HFSS SBR+

  • Shooting and Bouncing Ray
  • Physical Optics
  • Physical Theory of Diffraction
  • Uniform Theory of Diffraction
  • Creeping Wave

ANSYS HFSS
HFSS contains multiple simulation engines in one package, each targeted toward a specific application or simulation output.

HFSS Hybrid Technologies
The FEM-IE hybrid technology is built upon HFSS FEM, IE MoM and the patented ANSYS domain decomposition method (DDM) to solve electrically large and complex systems. By applying the appropriate solver technology, local regions of high geometric detail and complex materials are addressed with finite element HFSS, while regions of large objects or installed platforms are addressed with 3D MoM HFSS-IE. The solution is delivered in a single setup through a single, scalable and fully coupled system matrix.

Finite Element Method (Frequency Domain)
This is the high-performance 3D, full-wave, frequency domain electromagnetic solver based on the proven finite element method. Engineers can calculate SYZ parameters and resonant frequency; visualize electromagnetic fields; and generate component models to evaluate signal quality, transmission path loss, impedance mismatch, parasitic coupling and far-field radiation. Typical applications include antennas/mobile communications, integrated circuits, high-speed digital and RF interconnects, waveguides, connectors, filters, EMI/EMC, etc.

ANSYS HFSS Finite Element Solver

Finite Element Transient (Time Domain)
The Finite Element Time Domain solver is used to simulate transient EM field behavior and visualize fields and system responses in typical applications like time domain reflectometry (TDR), lightning strikes, pulsed ground-penetrating radar (GPR), electrostatic discharge (ESD) and electromagnetic interference (EMI). It leverages the same finite element meshing approach as the frequency domain solver, without the need to switch meshing technologies to switch simulation domains. The transient solver complements the frequency domain HFSS solver, and enables engineers to understand the EM characteristics on the same mesh in both time and frequency domains.

ANSYS HFSS Transient Solver

Integral Equations
The integral equations (IE) solver employs the 3D Method of Moments (MoM) technique for efficiently solving open radiation and scattering problems. It is ideal for radiation studies like antenna design and/or antenna placement, and for scattering studies such as radar cross section (RCS). The solver can employ either multilevel fast multipole methods (MLFMM) or adaptive cross-approximation (ACA) to reduce memory requirements and solve times, allowing this tool to be applied to very large problems.

ANSYS HFSS Integral Equations Solver

HFSS Fast Mode
For the early part of a product’s design cycle — where rapid simulation results can provide invaluable insight regarding design trends — HFSS includes a fast simulation mode. The fast mode tunes the solver and adaptive mesher to return results as fast as possible, without significantly compromising solution accuracy. Then, as the design nears completion, a simple slider bar setting sets the HFSS solver to return validation-level signoff accuracy using the industry tested, gold-standard accuracy capability of HFSS.

 

ANSYS HFSS SBR+
SBR+ is the only commercial electromagnetic solver to empower Shooting & Bouncing Ray (SBR) technology with simultaneous and consistent implementations of Physical Theory of Diffraction (PTD), Uniform Theory of Diffraction (UTD), and Creeping Wave for simulating installed antenna performance on electrically large platforms that are hundreds or thousands of wavelengths in size.

SBR uses a ray tracing technique to model induced surface currents on the antenna platform or scattering geometry composed of conductors and dielectrics. With the SBR+ solver, engineers can obtain fast and accurate prediction of far field installed antenna radiation patterns, near-field distributions and antenna-to-antenna coupling (S-parameters) on electrically medium, large and enormous platforms. Transmissions and reflections can be modeled in large structures like vehicles, aircraft, radomes, etc. HFSS SBR+ also provides efficient radar signature modeling, including ISAR images of electrically large targets.

Physical Theory of Diffraction
The Physical Theory of Diffraction (PTD) wedge correction feature is used for correcting PO currents along sharp edges of installed antenna platforms to refine EM field diffraction.

Uniform Theory of Diffraction
Engineers can model Uniform Theory of Diffraction (UTD) edge diffraction rays created by illuminated geometry edges and identified by PTD wedges. This is important for cases where the significant parts of the scattering geometry are otherwise shadowed from direct or multi-bounce illumination.

ANSYS HFSS SBR Reion

Creeping Wave Physics for RCS and Installed Antenna Analysis
ANSYS HFSS SBR+ is the only commercial asymptotic field solver to offer creeping wave physics for both radar signature and installed antenna modeling.

Creeping waves provide an important component of radar scattering from objects with curvature. When a radar signal impinges on a rounded target, the currents induced on the object reach around the back and create delayed signal echoes. In modeling electrically large targets, ray-tracing approaches like HFSS SBR+ must be employed to model the radar signature, but traditional ray-tracing approaches have no way to model the backside currents or their influence on target scattering. Creeping wave physics is a ground-breaking addition to HFSS SBR+ to capture this important characteristic of radar scattering. It yields unprecedented accuracy for radar signature modeling of large targets.

Creeping waves are also used to model the installed antenna performance when integrated into curved surfaces found on aircraft fuselages, rockets and missile bodies, automobile bodies and ship topsides. They are used to model radiation in shadowed regions for shooting and bouncing ray (SBR) simulations. SBR is accurate for modeling radiation in regions directly lit by the antenna or indirectly through multi-bounce interactions. However, for the back lobe or deep sidelobe regions shadowed from view by the curved host platform it is essential to use creeping wave physics to extend the ground-induced currents beyond line of sight across these smoothly curved surfaces. The analysis contributes to a higher-fidelity characterization of the back radiation. Increased accuracy of modeling antenna-to-antenna coupling is another benefit of this capability.

Creeping wave physics - HFSS

ACT Extensions RadarPre and RadarPost for Radar Processing Delivered with HFSS
HFSS and HFSS SBR+ provide you with a powerful capability to model radar cross section (RCS) and time domain radar response for large targets like aircraft, automobiles and ships. Radar signatures involving time domain range profiles, inverse synthetic aperture radar (ISAR) plots and waterfall/sinograph plots yield insight into radar design and stealth. The RadarPre and RadarPost toolkits simplify and speed the process of setting up these complex radar simulations and provide streamlined post-processing for graphically rich analysis results. The RadarPre and RadarPost ACT toolkits are delivered with the standard installation of the ANSYS Electronics Desktop.

Accelerated Doppler Processing
Accelerated Doppler processing (ADP) accelerates simulation of long-, medium- and short-range pulse-Doppler and chirp-sequence frequency-modulated continuous-wave (FMCW) radars used in ADAS, autonomous vehicles and other near-field radar systems by more than 100x. ADP includes integrated range-Doppler image map post-processing and animation in the ANSYS Electronics Desktop. In addition to ADP, a gain and self-coupling antenna link streamlines the complete radar design process, so radar sensor simulation results can be used seamlessly in installed performance modeling and in radar-environment range-Doppler simulations. The workflow simplifies the collaboration between radar sensor designers and the OEMs that incorporate the sensors on vehicles and in large-environment radar simulations.

Accelerated Doppler processing is available as part of the ANSYS Electronics Enterprise product suite.

 

Reliability and Automatic Adaptive Meshing

Engineers know and rely on ANSYS HFSS to provide accurate solutions automatically. The key to this reliability is automatic adaptive mesh refinement, which generates an accurate solution based on the physics and electromagnetics of the design. This contrasts with other electromagnetics (EM) simulation tools where the engineer is expected to know how to mesh the structure to get an accurate solution. Automatic adaptive meshing is a highly robust meshing technique that produces an efficient mesh for guaranteed accuracy as quickly as possible. You need only import or draw the geometry, and specify materials, boundary conditions, excitations and the frequency band of interest, and HFSS takes care of the rest.

To minimize the need for “healing and cleaning” of imported CAD geometry, powerful TAU flex meshing technology is included within HFSS. TAU flex quickly produces a reliable initial mesh from the “dirtiest” of models, so you can quickly advance through the solution process with the accurate and reliable solver technology of HFSS.

HFSS Capabilities: Automatic Adaptive Meshing

3D Components

ANSYS 3D Components represent discrete subcomponents of a larger simulation that can be easily re-used for electromagnetic simulations in ANSYS HFSS. 3D Components can encapsulate geometry, material properties, boundary conditions, mesh settings, excitations and discrete parametric controls. They are convenient for design re-use for devices such as antennas, connectors and surface mount devices like chip capacitors, inductors and discrete LTCC filters. To enable industry-wide collaboration, ANSYS 3D Components can be created with password protection, file encryption and creation settings to discreetly control which features are visible to a component end-user. However, the HFSS simulation engine is fully aware of the entire component within the simulation, and therefore provides a fully coupled and complete electromagnetic simulation result.

An ANSYS 3D Component can be likened to a building block of a simulation implemented as a plug-and-play module. Since 3D Components provide a fully coupled electromagnetic analysis, they have a distinct advantage over an S-parameter model which only delivers a response of a component on its test fixture. A system integrator just adds the component onto a system such as a 3D Component of an antenna on an aircraft to simulate the installed performance of the antenna. They can do this with the confidence that the simulation results represent a fully coupled and accurate model simulated with ANSYS HFSS.

Vendors and developers of discrete components can create simulation-ready 3D Components in ANSYS HFSS and provide them to end-users who can reference them in larger system simulation. With this ability to collaborate through 3D Components, vendors can provide their customers with HFSS simulation-ready models, giving them a valuable edge in enabling first-pass design success.

Modelithics®, an ANSYS partner, offers a licensed library of HFSS 3D components. The library includes models for the Barry QFN package, RJR QFN package, Coilcraft inductors, Johanson capacitor, Mini-Circuits filter and Gigalane coax connector. More information can be found on the Modelithics website at www.Modelithics.com/model/models3D.

3D components for HFSS

Advanced Phased Array Antenna Simulation

In ANSYS HFSS, engineers can simulate infinite and finite phased-array antennas with all electromagnetic effects, including mutual coupling, array lattice definition, finite array edge effects, dummy elements, element blanking and more, through advanced unit cell simulation. A candidate array design can examine input impedances of all elements under any beam scan condition. Phased array antennas can be optimized for performance at the element, subarray or complete array level based on element match (passive or driven) far-field and near-field pattern behavior over any scan condition of interest.

Infinite array modeling involves one or more antenna elements placed within a unit cell. The cell contains periodic boundary conditions on the surrounding walls to mirror fields, creating an infinite number of elements. Element scan impedance and embedded element radiation patterns can be computed, including all mutual coupling effects. The method is especially useful for predicting array-blind scan angles that can occur under certain array beam steering conditions.

Finite array simulation technology leverages domain decomposition with the unit cell to obtain a fast solution for large finite-sized arrays. This technology makes it possible to perform complete array analysis to predict all mutual coupling, scan impedance, element patterns, array patterns and array edge effects.

3D Component Finite Array Domain Decomposition Method

ANSYS is the first to offer a novel solution for accurate and reliable analysis of antenna arrays used in such diverse applications as 5G mmWave, radar design including automotive radar sensors, and satellite communications. This breakthrough technology known as 3D Component Domain Decomposition method (3D Comp DDM) empowers engineers to conquer large and complex antenna array problems efficiently. It supports the HFSS gold standard adaptive meshing technique which the electronics industry relies upon for accurate and reliable results. Simulating a large complex antenna array through conventional techniques can take a long time or return unreliable and limited-value results owing to infinite array assumptions. On the other hand, 3D Comp DDM enhances the simulation process offering a robust, reliable, and efficient solution for modeling large arrays while capturing finite array truncation effects. It exploits the repetitive nature of an array’s geometry requiring only single instances of antenna elements, implemented as HFSS 3D Components, to be adaptively meshed and virtually repeated into the array lattice to produce a single global solution. A cornerstone feature is a patented non-conformal finite element meshing and solving technique. When combined with a highly intuitive antenna array UI, it offers tremendous flexibility in design with the option to include element types of differing shape, form and materials. Moreover, edge treatment considerations such as pattern distortion and tapering due to an enclosing radome can be fully accounted, leading to a highly accurate characterization of multiscale array-radome assemblies. This technology is ideal for capturing the full electromagnetic behavior of large complex antenna arrays.

Advanced phased array antenna simulation
3D Component Finite Array Domain Decomposition Model

High-Performance Computing

Electronics HPC

ANSYS Electronics HPC enables parallel processing for solving the toughest and most challenging models — models with great geometric detail, large systems and complex physics. ANSYS goes well beyond simple hardware acceleration to deliver groundbreaking numerical solvers and HPC methodologies optimized for multicore machines, with scalability to take advantage of full compute cluster power. The amount of HPC required is based simply on the total number of cores used in the analysis, irrespective of which HPC technology is employed.

Multithreading: ANSYS Electronics HPC takes advantage of multiple cores on a single computer to reduce solution time. Multithreading technology speeds up the initial mesh generation, matrix solves and field recovery.

Spectral Decomposition Method: The spectral decomposition method (SDM) accelerates frequency sweeps by distributing multiple frequency points in parallel over compute cores and nodes. You can use this method in tandem with multithreading to speed up extraction of individual frequency points, while SDM parallelizes multi-frequency point extraction.

Domain Decomposition Method: The domain decomposition method (DDM) accelerates the solution for larger and more complex geometries by distributing a simulation across multiple cores and networked nodes. This method is primarily designed to tackle larger problem size using distributed memory. It can also be combined with multithreading and SDM to provide improvements in simulation scalability and throughput.

Periodic Domain Decomposition: Periodic domain decomposition applies DDM to finite periodic structures such as antenna arrays or frequency selective surfaces. This method virtually duplicates the geometry and mesh of the periodic structure’s unit cell and then applies the DDM algorithm to the resulting finite sized array to solve for the unique fields for all elements. Simulation capacity and speed are substantially increased. This method can be combined with multithreading and SDM to further accelerate the solution.

Hybrid Domain Decomposition Method: Hybrid DDM uses the domain decomposition method on models consisting of finite element (FE) and integral equation (IE) domains. The HFSS IE solver add-on lets you create HFSS models that can solve extremely large EM problems. This methodology combines the virtues of FEM’s ability to handle complex geometries plus MoM’s efficient solutions for antenna and radar cross section analysis. Hybrid DDM can be combined with multithreading and SDM to provide further solution acceleration.

Distributed Direct Matrix Solver: The distributed direct matrix solver is a distributed memory parallel technique for HFSS and the HFSS-IE solvers. The matrix solution is distributed across multiple cores or MPI-integrated computers. It results in solutions with improved scalability through increased MPI memory access, and enhanced speed through increased MPI networked core access for highly accurate direct matrix solver solutions. These distributed memory matrix solvers can be combined with multithreading and SDM to further increase simulation throughput.

Distributed Memory Matrix Solver: The distributed memory matrix solver (DMM) is a distributed memory parallel technique for HFSS, including the finite element method (FEM) and integral equations (IE). The matrix solution is distributed across multiple cores of MPI-integrated compute nodes. It results in a reduced memory footprint per node and improves scalability and speed through increased MPI memory access and networking. The DMM solver is integrated in the Auto-HPC technology and can be orthogonally combined with the spectral decomposition method (SDM) to further increase simulation throughput.

HPC in the Cloud: The ANSYS Cloud service makes high-performance computing (HPC) extremely easy to access and use. It was developed in collaboration with Microsoft Azure, a leading cloud platform for HPC. It has been integrated into the Electronics Desktop, so you can access unlimited, on-demand compute power from the design environment.

Application brief: Cloud Computing for ANSYS Electromagnetic Designs
To learn more about cloud computing, visit the ANSYS Cloud page.

DDM distributes mesh subdomain solutions to multiple, including networked, compute cores
DDM distributes mesh subdomain solutions to multiple, including networked, compute cores. By solving these subdomains in parallel, you can realize a significant increase in simulation capacity and speed.

Optimized User Environment

The full-featured 3D solid modeler and layout interface enables you to work in a layout design flow, or to import and edit 3D CAD geometry.

HFSS 3D Modeler: The 3D interface enables you to model complex 3D geometry or import CAD geometry for simulation of high-frequency components, such as antennas, RF/microwave components and biomedical devices. You can extract scattering matrix parameters (S, Y, Z parameters), visualize 3D electromagnetic fields (near- and far-field) and generate ANSYS Full-Wave SPICE models that link to circuit simulations.

HFSS 3D Layout: HFSS 3D Layout is an optimized interface for layered geometry of PCBs, IC packages and on-chip passives. It is suitable for analyzing the signal integrity of PCBs and packages, including full-wave or radiative effects. Applications range from high-speed serial links with complex breakout regions and poorly referenced transmission lines, to patch antennas and millimeter-wave circuits. Engineers can draw or import geometry to analyze electromagnetic behavior, display radiated fields, investigate impedances and propagation constants, explore S-parameters or calculate insertion and return loss.

The model is assembled and rendered in a Layout environment; however, all effects are rigorously simulated, including 3D features such as trace thickness and etching, bond-wires, and solder balls. Layout geometry is primarily described in 2.5D with a stack-up and specialized primitives such as vias, pins, traces and bond-wires. The editor is completely parametric, so trace widths or thicknesses can be easily varied or parameterized for sweeps, optimization or design-of-experiments (DOE). The HFSS solver within 3D Layout includes many features targeted specifically for PCB and package structures. These features include advanced meshing technology optimized for layered geometry and integrated circuit elements and S-parameters for modeling of discrete components.

To accurately predict a system’s performance, analyzing the electronic interaction between components and subsystems in an integrated environment can be critical. HFSS 3D Layout allows for creation of a PCB assembly, connecting boards, ICs and discrete components. With this approach, you can pick and place 3D connector models on a PCB without the need to create a schematic. Electrical engineers have long used schematic-based design entry to connect models together for printed circuit boards, IC packages and components. This works well for relatively simple designs, but becomes tedious and error prone for larger and more complex designs. With layout-driven assembly, pin connections are automatically established based on the geometry. Once an assembly is created, HFSS 3D Layout can invoke a range of solvers appropriate for each component, or geometries can be merged and solved together.

From the HFSS 3D Layout interface, you can access an expanding list of solvers, which include HFSS, SIwave and Planar EM. This allows for iterative design using fast SIwave solves, and rigorous verification using HFSS, all from the same design and geometry.

Gallileo Board

RF Systems and Circuits

When combined with HFSS, circuits and RF systems simulation technologies create an end-to-end high-performance workflow for RF, EMI/EMC and other applications. It includes EMIT, a unique multifidelity approach for predicting RF system performance in complex RF environments with multiple sources of interference. EMIT also provides the diagnostic tools needed to quickly identify root-cause RFI issues and mitigate problems early in the design cycle.

These state-of-the-art circuit solvers address RF, analog, digital and mixed-signal designs with accuracy, high execution speed and robust capability to handle circuits with thousands of active and passive elements. Listed below are the features available in these simulation technologies.

More information about these solutions can be found at the following applications:

EMIT

  • RF link budget analysis
  • Built-in wireless propagation models
  • RF co-site and antenna coexistence analysis
  • Automated diagnostics for rapid root-cause analysis
  • Quick assessment and comparison of potential mitigation measures
  • RF radio and component libraries
  • Multi-fidelity behavioral radio models
  • Antenna-to-antenna coupling models

Circuit Analyses

  • Linear
  • Transient
  • DC analysis with multiple continuation options
  • Multitone harmonic balance analysis

Shooting Method

  • Oscillator analysis

Autonomous Plus Driven Sources Option

  • Time varying noise and phase noise analyses
  • Envelope analyses

Multicarrier Modulation Support

  • Load pull analysis and model support
  • Periodic transfer function analysis
  • Transient analysis
ANSYS EMIT solves the complete RF environment, including radio frequency interference
ANSYS EMIT solves the complete RF environment, including radio frequency interference.

SI Circuits

When combined with HFSS, SI Circuits can be used for analyzing signal integrity, power integrity and EMI issues caused by shrinking timing and noise margins in PCBs, electronic packages, connectors and other complex electronic interconnects. HFSS with SI Circuits can handle the complexity of modern interconnect design from die-to-die across ICs, packages, connectors and PCBs. By leveraging the HFSS advanced electromagnetic field simulation capability dynamically linked to powerful circuit and system simulation, engineers can understand the performance of high-speed electronic products long before building a prototype in hardware. This approach enables electronics companies to achieve a competitive advantage with faster time to market, reduced costs and improved system performance. The SI Circuits adds transient circuit analysis to HFSS. This enables engineers to create high-speed channel designs that include the driving circuitry as well as the channel. The driving circuitry can be transistor level, IBIS-based or ideal sources. When performing an analysis on these channels, you can select from a variety of analysis types:

  • Linear network analysis (included with HFSS)
  • Transient analysis
  • QuickEye and VerifEye analyses for fast eye generation in high-speed channel design, bathtub curves, jitter and eye masks
  • Monte Carlo analysis supporting Spectre® and HSPICE® functionality
  • DC analysis with automated convergence
  • Dynamic links with ANSYS Q3D Extractor and ANSYS SIwave
  • IBIS-AMI analysis and model support
DDR3 simulation performed with the ANSYS SI option, showing DQ, DQS and timing eye patterns
DDR3 simulation performed with the ANSYS SI option, showing DQ, DQS and timing eye patterns.

Multidomain System Modeling

ANSYS Simplorer is a powerful platform for modeling and simulating system-level digital prototypes integrated with ANSYS Maxwell, ANSYS HFSS, ANSYS SIwave and ANSYS Q3D Extractor. Engineers can verify and optimize performance of their software-controlled, multidomain systems. With flexible modeling capabilities and tight integration to ANSYS 3D physics simulation, Simplorer provides broad support for assembling and simulating system-level physical models to help engineers connect conceptual design, detailed analysis and system verification. Simplorer is ideal for electrified system design; power generation; conversion; storage and distribution applications; EMI/EMC studies and general multidomain system optimization and verification.

Simplorer Features:

  • Circuit simulation
  • Block diagram simulation
  • State machine simulation
  • VHDL-AMS simulation
  • Integrated graphical modeling environment

Model Libraries

  • Analog and power electronics components
  • Control blocks and sensors
  • Mechanical components
  • Hydraulic components
  • Digital and logic blocks

Application-specific libraries

  • Aerospace electrical networks
  • Electric vehicles
  • Power systems
  • Characterized manufacturers components
  • Reduced order modeling
  • Power electronic device and module characterization
  • Co-Simulation with MathWorks Simulink
Multidomain System Modeling

EMI Solution

The EMI solution within ANSYS SIwave and ANSYS HFSS quickly identifies potential trouble spots and investigates them with proper what-if experiments for actionable design-rule violations in PCBs and packages, thus eliminating errors and speeding time to market. It constitutes two segments — the EMI Scanner and EMI Xplorer. The EMI Scanner provides automatic and customizable EMI design rule checks of PCBs and quickly identifies areas of potential interference on PCB designs prior to simulation. EMI issues are traditionally difficult to detect and simulating these problems requires hours of computational time. EMI Scanner is fast, efficient and beneficial for identifying EMI problems so you can avoid costly testing and time-intensive simulations.

The EMI Xplorer complements the EMI Scanner in ANSYS SIwave and ANSYS HFSS and examines the shades of gray in a violation to determine how severe it might be. Depending upon the result of the analysis performed in EMI Xplorer, mitigation measures are taken in SIwave or HFSS as necessary. Many types of violations on a PCB are analyzed by the EMI Xplorer where you can easily adjust the design rule parameters or define additional rules as needed. It allows you to study the impact of rule violations on trace impedance, losses, edge current, noise voltage etc., without changing the original design. As an example, consider a critical net crossing a split in an adjacent reference plane. The design rule mandates adding at least two stitching capacitors within some maximum distance of the crossing. EMI Xplorer calculates the voltage across the split for the actual, desired and worst-case scenarios pertaining to the specified distance to the stitching capacitors. You can then perform multiple what-if experiments in EMI Xplorer to analyze these scenarios and ensure that the voltage across the gap is below the desired limit. EMI Xplorer minimizes potential board- and package-level EMI problems prior to running the final verification with time-consuming 3D simulations.

 

ANSYS Electronics Desktop

The ANSYS Electronics Desktop environment houses the ANSYS gold-standard electromagnetics simulation applications. Tight integration among the simulators yields unprecedented ease of use for setup and solution of complex simulations for design and optimization. It is the native desktop for HFSS, Maxwell, Q3D Extractor, Twin Builder and other simulators. More information is available on this page.

 

Optimetrics

Parameterization and optimization are key enablers for Simulation-Driven Product Development. Parametric analysis provides a thorough understanding of the design space based on your design variables, so that you can make better engineering decisions. Optimization algorithms enable the software to automatically find better designs. Parameterization and optimization capabilities available with HFSS include:

Parametric analysis

  • User-specified range and number of steps for parameters
  • Automatic analysis of parameter permutations
  • Automated job management across multiple hardware platforms and reassembly of data for parametric tables and studies

Optimization

  • User-selectable cost functions and goal objectives, including:
    • Quasi-Newton method
    • Sequential nonlinear programming (SNLP)
    • Integer-only sequential nonlinear programming

Sensitivity Analysis

  • Design variation studies to determine sensitivities to:
    • Manufacturing tolerances
    • Material properties

Tuning

  • User-controllable slide-bar for real-time tuning display and result

Statistical Analysis

  • Design performance distribution versus parameter values
Pareto-front analysis of electric machine
Pareto-front analysis of electric machine

Network Data Explorer

Network Data Explorer provides a convenient way to plot and analyze large sets of single-ended or mixed-mode S-, Y- and Z-parameter data and export that data in a variety of different formats. It also acts as a front end to ANSYS Full-Wave SPICE: S-parameter data can be converted to passive, causal, SPICE-compatible models using ANSYS' patented state-space ROM technology. For low frequency applications, Network Data Explorer offers visualization, analysis and manipulation tools for network data pertaining to 3D and 2D eddy current solutions.

 

ANSYS HFSS - Packages

HFSS is available as part of the Electronics Pro, Premium and Enterprise product suite. Listed below is a sampling of capabilities at each level that are most relevant for designing high-frequency applications.

Electronics Pro 2D:

  • 2D Extraction
  • EMIT
  • Nexxim Circuit (DC, Transient, RF)

Electronics Premium HFSS:

  • All HFSS 3D solvers
  • ECAD and MCAD modeling and translation
  • Advanced Circuit Analysis
  • Electronics Pro 2D

Electronics Enterprise:

  • Electronics Premium (HFSS, SIwave, Maxwell, Q3D Extractor, Icepak)
  • Accelerated Doppler Processing for SBR+
  • Design of Experiments
  • SpaceClaim Design Modeler

The complete list of the Electronics Product Package contents is available in the table below.

Electronics Product Package Contents

Electronics Pro 2D

Electronics Premium HFSS

Electronics Premium Maxwell

Electronics Premium
Q3D Extractor

Electronics Premium Icepak

Electronics Premium SIwave

Electronics Enterprise

Electronics Desktop 2D Prep/Post

Maxwell 2D, PExprt, RMxprt

2D Extractor

Simplorer (Analog and Digital)

EMIT

Optimetrics

Nexxim Circuit (DC, Transient, RF)

Nexxim Circuit (SI)

 

Electronics Desktop 3D Prep/Post

 

ECAD & MCAD Translation

 

Network Data Explorer

 

HFSS

 

 

 

 

 

Maxwell 3D

 

 

 

 

 

Q3D Extractor

 

 

 

 

 

Icepak

 

 

 

 

 

SIwave (DC, AC)

 

 

 

 

 

SIwave (Transient, HFSS Regions, EMI, etc.)

 

 

 

 

 

 

Design of Experiments

 

 

 

 

 

 

SpaceClaim Design Modeler

 

 

 

 

 

 

Accelerated Doppler Processing