Synopsys and Ansys power the future of innovation—connecting silicon to systems. Multipurpose, full wave 3D electromagnetic (EM) simulation software for designing and simulating high-frequency electronic products such as antennas, components, interconnects, connectors, ICs and PCBs. Resources & Events System-Level Simulation for High-Frequency and High-Speed Electronics Ansys HFSS is industry‑trusted full‑wave 3D electromagnetic software used to validate and sign off complex electronic designs. Engineers rely on HFSS to analyze antennas, RF and microwave components, IC packages, PCBs, and full systems—leveraging connected, multiphysics workflows that enable system‑aware design from silicon through final system verification. These signoff-grade simulations feed directly into the Synopsys RF design flow . Signoff-Grade Accuracy Silicon-to-System Scale Connected Multiphysics Workflows Fully Coupled EM System Solver Automatic Adaptive Meshing Encrypted Design Sharing Fully coupled EM simulation of the largest & most complex systems with new Mesh fusion technology in HFSS Mesh fusion provides best-in-class parallel meshing technology within HFSS enabling fast simulation of large electromagnetic systems. It will help extract S-parameters of your complete system in a matter of minutes vs hours. You can drastically reduce the simulation time and increase the simulation speed of solving large EM structures. Take advantage of multiple cores available to you for simulation. These signoff-grade simulations feed directly into the Synopsys RF design flow . Fully coupled EM simulation of the largest & most complex systems with new Mesh fusion technology in HFSS Mesh fusion provides best-in-class parallel meshing technology within HFSS enabling fast simulation of large electromagnetic systems. It will help extract S-parameters of your complete system in a matter of minutes vs hours. You can drastically reduce the simulation time and increase the simulation speed of solving large EM structures. Take advantage of multiple cores available to you for simulation. These signoff-grade simulations feed directly into the Synopsys RF design flow . HFSS enables early electromagnetic insight and rigorous validation across antennas, RF, SI/PI, and EMI/EMC—helping engineers explore design tradeoffs sooner, reduce rework, eliminate uncertainty, and confidently validate fully coupled electronic systems from initial concept through final signoff. Antenna & RF Analysis Chip-package-system Analysis Signal Integrity (SI) Power Integrity (PI) EMI / EMC Analysis Fully Coupled EM Adaptive EM Meshing Multiphysics AEDT Platform Streamlined Setup & Analysis HPC & Cloud Scaling Python Automation APIs From Chips to Ships, Solve Them All with HFSS How Ansys HFSS Mesh Fusion solves much larger designs than ever thought possible HFSS Mesh Fusion’s patented technology enables much more complex designs to be simulated with the same rigor, accuracy and reliability of Ansys HFSS. It accomplishes this by applying targeted meshing technologies within the same design, appropriate to the local geometry. HFSS Mesh Fusion continues to use the same “electromagnetically aware” adaptive meshing technology as before without compromising accuracy because a fully coupled electromagnetic matrix is solved with each adaptive mesh step and for each point in a frequency sweep. “After a two-year extensive evaluation against multiple industry products…we found HFSS is truly the 'golden standard' in electromagnetic modeling... HFSS produced extremely accurate results with no discernible difference between measured and modeled results.” “Ansys HFSS Mesh Fusion makes it possible… to create optimal designs, shrink design cycles and cost… Leveraging Mesh Fusion, we are innovating highly advanced designs that were previously unimaginable…we simulated the EM transmission of an entire room.” “Ansys HFSS can solve any structure, regardless of complexity, enabling creative out-of-the-box designs…Because with HFSS in the loop, we go into the lab to confirm results, not discover them.” “Our goal is always to propose and deliver high-quality, high-performance connectors to our customers in a timely manner. Ansys HFSS software has become an indispensable tool for improving the design quality and rapid release of high-speed transmission connectors.” “We went with Ansys …because of the exquisite accuracy. My philosophy is to take the time to design it right the first time so that you don’t have to build it multiple times…The simulated world that Ansys enables is crucial to Samtec’s R&D” The 2026 R1 HFSS release delivers major breakthroughs, including GPU‑accelerated solving, high‑capacity 3D power integrity, and reliable rigid‑flex meshing—boosting performance, scalability, and workflow efficiency for SI/PI engineers, RF designers, and electronics system developers. A broadband 3D Power Integrity simulation with the speed, capacity, and accuracy required to meet the challenges of power delivery for IC, Package and Board designs. HFSS now accelerates frequency sweeps with new cuDSS based GPU solving—enabling faster parallelized field computations and support for multi node distribution to handle larger, more complex simulations efficiently. The new Omega Mesher in HFSS 3D Layout delivers fast, reliable meshing for complex rigid‑flex PCB designs—improving success rates, reducing memory usage, and accelerating overall simulation turnaround. HFSS Applications View All Applications Antenna Design and Placement Electromagnetic simulation of antenna design and its interaction with the entire system enables you to evaluate antenna placement, EMI/co-site interference and more. Electromagnetic simulation of antenna design and its interaction with the entire system enables you to evaluate antenna placement, EMI/co-site interference and more. Autonomous System Validation Ansys model-based simulation solutions enable autonomous vehicle testing and validation for software-in-loop, hardware-in-loop and driver-in-loop analysis. Ansys model-based simulation solutions enable autonomous vehicle testing and validation for software-in-loop, hardware-in-loop and driver-in-loop analysis. Autonomous Sensor Development Ansys provides a comprehensive autonomous vehicle sensor simulation capability that includes lidar, radar and camera design and development. Ansys provides a comprehensive autonomous vehicle sensor simulation capability that includes lidar, radar and camera design and development. Electromagnetic Interference and Compatibility (EMI/EMC) Minimizing electromagnetic interference with simulation delivers high-performance, compliant and safe electronics systems, down to the microchip level. Minimizing electromagnetic interference with simulation delivers high-performance, compliant and safe electronics systems, down to the microchip level. HFSS Case Studies Researchers designed an unusually compact wearable antenna that covers the entire instrument, scientific and measurement band. Researchers designed an unusually compact wearable antenna that covers the entire instrument, scientific and measurement band. ANYWAVES Uses Ansys Simulation Software to Develop Next-Generation Miniature Antennas ANYWAVES Uses Ansys Simulation Software to Develop Next-Generation Miniature Antennas Electromagnetic Simulation Enhancing Connector Development Discover how Dell PowerEdge equipped with AMD EYPC speeds up Ansys HFSS simulations for Hirose Electric. Discover how Dell PowerEdge equipped with AMD EYPC speeds up Ansys HFSS simulations for Hirose Electric. Andar Technologies Virtual prototypes from Ansys HFSS allow Andar to create innovative designs and reduce the amount of physical prototyping to a minimum. Virtual prototypes from Ansys HFSS allow Andar to create innovative designs and reduce the amount of physical prototyping to a minimum. HFSS Application Briefs Ansys HFSS for Antenna Simulation Learn about antenna design and simulation with Ansys HFSS, the industry leading 3D electromagnetic simulation tool for high frequency electronic components. Learn about antenna design and simulation with Ansys HFSS, the industry leading 3D electromagnetic simulation tool for high frequency electronic components. What is Ansys HFSS? Ansys HFSS is a 3D electromagnetic simulation software solution for designing and simulating high-frequency electronic products such as antennas, RF and microwave components, high-speed interconnects, filters, connectors, IC components and packages and printed circuit boards. How do I install HFSS? To install Ansys HFSS, you must be an Ansys customer and have access to the Customer Portal. Ansys HFSS is included in the Electronics software bundle and is also included in the free Ansys Student bundle. Can you import STL models into Ansys HFSS? Yes, STL is an import option in HFSS. For finite element model (FEM) analysis, STL files are converted to the HFSS modeler format. For IE and SBR+ analysis, there is an option to import and directly solve to the STL facets. How do I download HFSS? To download Ansys HFSS, you must be an Ansys customer and have access to the Customer Portal. Ansys HFSS is included in the Electronics software bundle and is also included in the free Ansys Student bundle. How do I learn HFSS? You can learn about Ansys HFSS in several different ways depending on whether you are an existing customer or a student or non-customer. Intro to Ansys HFSS is a free course available on our Ansys Innovation Courses site where you will learn the basics of Ansys HFSS geometry design and the EM simulation workflow. These HFSS courses are available to Ansys Customers. How do I design antennas in HFSS? Get step-by-step instructions on designing antennas in Ansys HFSS in this video, which demonstrates how to create the geometry of the dipole antenna and discusses features in HFSS for antenna analysis. "How to Design Antennas in Ansys HFSS." Join In The Conversation Follow Us on Linkedin Silicon to System Electronics Design — Early Exploration through Signoff Ansys HFSS delivers signoff-grade electromagnetic simulation from IC to package, PCB, and full system. Physics-driven adaptive meshing automatically ensures accuracy without manual tuning, letting engineers focus on design. Full coupled solvers support multi-scale RF and microwave design, EMI/EMC, signal integrity, and broadband power integrity at scale with HFSS-PI — enabling early insight and confident validation across today's most complex electronic systems. HFSS is the premier EM tool for R&D and virtual design prototyping. It reduces design cycle time and boosts your product’s reliability and performance. EMI/EMC analysis

Radio Frequency Interference (RFI) in complex environments Installed antenna and RF cosite analysis RF systems and circuits analysis Signal and Power Integrity analysis Ansys Cloud Burst Compute EMI/EMC Analysis Ansys Electronics Desktop enables engineers to easily combine the unmatched accuracy of Ansys electromagnetic 3D and 2.5D field solvers and the powerful circuit- and system-level solutions in Ansys RF Option to diagnose, isolate and eliminate EMI and radio-frequency issues (RFI) early in the design cycle. Users can take advantage of the seamless workflow in Electronics Desktop , which includes advanced electromagnetic field solvers, and dynamically link them to power circuit simulators to predict EMI/EMC performance of electrical devices. These integrated workflows avoid repetitive design iterations and costly recurrent EMC certification tests. Multiple EM solvers intended to address diverse electromagnetic problems, as well as the circuit simulators in Electronics Desktop, help engineers assess the overall performance of their electrical devices and create interference-free designs. These diverse problems range from radiated and conducted emissions, susceptibility, crosstalk, RF desense, RF coexistence, cosite, electrostatic discharge, electric fast transients (EFT), burst, lightning strike effects, high intensity fields (HIRF), radiation hazards (RADHAZ), electromagnetic environmental effects (EEE), electromagnetic pulse (EMP) to shielding effectiveness and other EMC applications. Radio Frequency Interference (RFI) in Complex Environments EMIT works hand-in-hand with Ansys HFSS to combine RF system interference analysis with best-in-class electromagnetic simulation for modeling installed antenna-to-antenna coupling. The result is a complete solution to reliably predict the effects of RFI in multi-antenna environments with multiple transmitters and receivers. EMIT’s powerful analysis engine computes all important RF interactions including non-linear system component effects. Diagnosing RFI in complex environments is notoriously difficult and expensive to perform in a testing environment, but with EMIT’s dynamic linked results views, the identification of the root-cause of any interference is rapidly accomplished via graphical signal trace-back and diagnostic summaries that show the exact origin and path that interfering signals take to each receiver. Once the cause of interference is uncovered, EMIT enables rapid evaluation of various RFI mitigation measures in order to arrive at the optimum solution. The new HFSS/EMIT Datalink allows the model for RFI analysis to be created in EMIT directly from the physical 3D model of the installed antennas in HFSS. This provides a seamless end-to-end workflow for a complete RFI solution for RF environments ranging from large platform cosite interference to receiver desense in electronic devices. Installed Antenna and RF Cosite Analysis 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 and element blanking, 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. RF Systems and Circuits Analysis+ 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 multi-fidelity 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. Signal and Power Integrity Analysis+ 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. Encrypted 3D Components Encrypted 3D Component support in HFSS 3D Layout allows companies to share their detailed component designs (connector, antenna, SMD chip capacitor) without divulging IP such as geometry and material properties. The ability to simulate encrypted HFSS 3D components means that you no longer need to compromise on accuracy. Designers are no longer forced to use circuit-level components (e.g., S-parameter models) vs. true 3D models into their design, impacting the overall simulation accuracy. It enables prospective customers of vendors to use encrypted 3D Components in a full system design. The end user receives more confidence in the validity of results by rigorously considering coupling effects of the integration while also protecting the vendor’s design IP. In addition, it also provides full, uncompromised simulation fidelity for encrypted 3D components with HFSS and adaptive meshing delivering its gold-standard accuracy. Ansys HFSS has been enhanced with multipaction analysis, which solves for an electronic phenomenon that can cause breakdown due to high electric fields in a vacuum, enhancing solutions for aerospace applications as well as 5G satellites. HFSS multipaction solver is based on a finite-element particle-in-cell (PIC) method. HFSS provides the multipaction analysis as a postprocessing of the frequency-domain field solutions. With few steps to set up the excitations and boundary conditions for charged particle simulation, you can check whether your design meets the standard for multipaction breakdown prevention. Ansys Cloud Burst Compute Provides on-demand HPC access in the cloud directly within the Ansys HFSS application. Ansys Cloud Burst Compute provides secure, scalable, on-demand HPC access directly within Ansys HFSS, eliminating the need for dedicated IT resources or cloud infrastructure maintenance. HFSS RESOURCES & EVENTS Featured Webinars This webinar series shows you how the HFSS adaptive meshing technology handles massive PCB layout geometries and gives you the most accurate results using real customer examples. This webinar will chart the progress of HFSS with respect to antenna design and how it has evolved into the established leader in the field. Learn how Ansys HFSS-IC can assist you in simulating complex interposers and 3D-IC designs and improve design cycles, as well as product performance. Discover how automation reduces Si/PI simulation setup times from hours to seconds, enabling faster design iterations and more efficient high-speed electronics design using Ansys tools and PyAEDT. Discover how to implement accurate physics-based digital twins by leveraging the NVIDIA Aerial Omniverse Digital Twin (AODT) platform with Ansys Perceive EM to extract AI/ML Synthetic Data for 6G communications research and design. Learn more about how Ansys tools can aid engineers in assessing base-station antenna placement and operations. White Papers & Articles Physics-based Synthetic Data for Real World Radar Applications In this technical paper, Ansys subject matter expert Arien Sligar explains the use of electromagnetic simulation technology derived from Ansys HFSS along with a digital engineering methodology for generating synthetic data to train an ML algorithm for automotive radar. In this technical paper, Ansys subject matter expert Arien Sligar explains the use of electromagnetic simulation technology derived from Ansys HFSS along with a digital engineering methodology for generating synthetic data to train an ML algorithm for automotive radar. AMD CPU Libraries Accelerate HFSS Simulation Performance AMD CPU Libraries Accelerate HFSS Simulation Performance Modeling and Simulation of ADAS Radar Antennas and Systems Modeling and Simulation of ADAS Radar Antennas and Systems Antenna Simulation for Commercial UAVs and Wireless Networks in a Warehouse Antenna Simulation for Commercial UAVs and Wireless Networks in a Warehouse FreeFall Aerospace is committed to developing better ways to move the data that connect people, places, and things. Ansys HFSS helps make that possible. Freefall’s team had to overcome a number of challenges. Not the least of which were the limitations in high-fidelity simulation software, difficulty in meshing of structures and the ability to model an antenna with the best accuracy. HFSS automated the process of determining the proper mesh and that has decreased preparation time and increased accuracy of results for a given amount of time. They were even able to build complete models in HFSS which allows them to move directly into the prototyping stage with confidence. Watch this video to learn how Ansys HFSS enabled Freefall Aerospace to expedite the development process and create a more valuable product. FreeFall Aerospace is committed to developing better ways to move the data that connect people, places, and things. Ansys HFSS helps make that possible. Freefall’s team had to overcome a number of challenges. Not the least of which were the limitations in high-fidelity simulation software, difficulty in meshing of structures and the ability to model an antenna with the best accuracy. HFSS automated the process of determining the proper mesh and that has decreased preparation time and increased accuracy of results for a given amount of time. They were even able to build complete models in HFSS which allows them to move directly into the prototyping stage with confidence. Watch this video to learn how Ansys HFSS enabled Freefall Aerospace to expedite the development process and create a more valuable product. Freefall Aerospace Uses Ansys HFSS to Design Innovative Antenna System ANSYS tools solve engineering challenges during the UAV delivery process. UAVs combined with warehouses manned by robots and tractors are simulated in ANSYS to predict performance and safety of delivering a package to its destination—enabling innovations that could lead to an autonomous future for Industrial applications. ANSYS tools solve engineering challenges during the UAV delivery process. UAVs combined with warehouses manned by robots and tractors are simulated in ANSYS to predict performance and safety of delivering a package to its destination—enabling innovations that could lead to an autonomous future for Industrial applications. Simulating Drones for Deliveries with ANSYS This video demonstrates how to design multiple antenna and radio systems in a uniquely integrated workflow that combines ANSYS HFSS, ANSYS HFSS SBR+ and EMIT. This video demonstrates how to design multiple antenna and radio systems in a uniquely integrated workflow that combines ANSYS HFSS, ANSYS HFSS SBR+ and EMIT. Design Flow for Wireless Communications in Complex RF Environments Webinars on Demand Webinar Boosting AEDT simulation with Ansys Cloud Webinar Boosting AEDT simulation with Ansys Cloud Ansys HFSS Best Practices and New Features for Antenna Design Ansys HFSS Best Practices and New Features for Antenna Design New, Powerful Ansys Electromagnetic Capabilities for EMI/EMC Simulations New, Powerful Ansys Electromagnetic Capabilities for EMI/EMC Simulations Automating Ansys HFSS Antenna Design Workflow with Ansys PyAEDT Automating Ansys HFSS Antenna Design Workflow with Ansys PyAEDT Solving RF and Microwave Design Integration Challenges Using 3D Component Modeling Solving RF and Microwave Design Integration Challenges Using 3D Component Modeling Improve Workflows, Encryption, and Performance with Ansys HFSS 2022 R2 How to Calculate and Increase Antenna Gain What is an Integrated Circuit (IC)? What is an Integrated Circuit (IC)? How to Design 5G and mm-Wave Filters Using AI-Optimized Tuning How to Design 5G and mm-Wave Filters Using AI-Optimized Tuning Design, Test, and Deployment of 5G Networks With Cost and Performance Targets Design, Test, and Deployment of 5G Networks With Cost and Performance Targets Simulating Just the Antenna is Not Enough: Analyze the Complete Antenna System with the Environment Simulating Just the Antenna is Not Enough: Analyze the Complete Antenna System with the Environment Solving Chip Designs at the System Level via HFSS 3D Layout Solving Chip Designs at the System Level via HFSS 3D Layout Wired for Success: Ansys HFSS Leads in Wirebond Simulation Wired for Success: Ansys HFSS Leads in Wirebond Simulation Ansys Learning Hub HFSS is easy to learn. Leverage our wide range of on-demand courses and training in the Ansys Learning Hub and get started with your electronics simulations today. 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