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3D Full-Wave Electromagnetic Simulator

ZWSim-EM is a 3D full-wave electromagnetic simulator with high precision, high efficiency, low memory footprint and powerful modeling capabilities. It is dedicated to providing users with an industry-specific, RF-related and all-in-one simulation solution.

EIT – Embedded Integral Technique
As the main algorithm of ZWSim-EM, EIT (Embedded Integral Technique) is a self-developed and leading technique based on FDTD (Finite-Different Time-Domain). Together with a series of technologies like Conformal Technology and Irregular Grid Processing Technology, the simulation accuracy and efficiency of ZWSim-EM are remarkable.
– Eliminate Trapezoidal Errors
Trapezoidal errors when using FDTD algorithm in complex geometric processing can be solved to guarantee second-order accuracy and efficiency.
– Irregular Grid Processing Technology
It overcomes the defects which occur whwn using Conformal-FDTD algorithm in time step, to ensure calculation efficiency without reducing time step
– Accurate Simulation of Multilayer Dielectrics
Any curved metals and multilayer thin dielectric sheets can be simulated accurately and efficiently
– Leading Model Discreteness
The model discreteness is robust and can handle any pathological triangle models, including the ones that degenerate into points and lines
– Optimized Kernel Algorithm
The kernel algorithm has been specially optimized to make its calculation faster than the traditional algorithms

Precise, Efficient, Less Memory Occupied
The EIT algorithm guarantees high precision, high efficiency, and low memory footprint.

Easy To Use
ZWSim-EM is easy-to-use with friendly user interface and clear workflow. The user interface can be customized by dragging different areas, and the simulation process is consistent with the design of user interface – you can set the entire simulation process from top to bottom in Navigation Tree, or from left to right in Ribbon Menu.

Outstanding Compatibility
Fully compatible with over 20 mainstream CAD formats, it helps import and export different CAD files freely.

Powerful 3D Modeling
ZWSim-EM makes use of ZW3D’s powerful modeling capabilities like parametric modeling, enabling you to build and edit models directly in ZWSim-EM, to improve modeling efficiency and facilitate later optimization.

More Features
– Powerful Modeling Capabilities
Based on ZW3D’s powerful modeling capabilities, ZWSim-EM can meet different modeling requirements in the electromagnetic field.
24 model formats can be imported, such as .sat, .stp and .igs. You can directly do modeling in ZWSim-EM by parametric modeling driven by history tree, which greatly improves modeling efficiency, facilitates subsequent parameter sweeping and optimization, and is convenient especially for complex structures. Also, you can save a model to the component library with all of its current settings so that it can be opened and used directly afterwards.
– Abundant Material Library
ZWSim-EM provides a rich material library containing more than 160 kinds of materials, offering you diversified electromagnetic materials to assign.
For shape models, hundreds of kinds of materials can be chosen. For Infinitely Thin Faces, PEC materials are provided. You can also customize materials according to your specific needs, and add the newly-created materials to the material library, which is convenient for you to access and reuse.
– Parameter Sweep
Parameter Sweep helps you check how the results are influenced under a specific range of parameters, and optimize accordingly to get the expected results.
You can scan and simulate the settled variable parameters, and analyze how the parameters in a specific range affect the results, to provide references to optimize the models and improve your design efficiency. You can establish multiple sweeping tasks and add multiple sweeping parameters to each task.
– Multiple Array Patterns
ZWSim-EM provides powerful array capabilities for antennas, realizing efficient pre-processing of array antennas simulation.
It supports arraying antenna units to form the array antennas and meet the simulation requirements. A variety of array patterns are available, such as linear array, circular array, polygonal array, point-to-point array, and array along curves or surface. What’s more, models, materials and ports can be arrayed simultaneously to help simulate array antennas efficiently.
– Multiple Background and Boundary Options
There are various kinds of background and boundary, meeting your needs of simulating different electromagnetic objects like antennas and waveguides.
The default background material is Vacuum, or you can also choose others from the material library or define by yourselves. Various boundaries such as Open boundary (default), PEC, PMC and Periodic are supported. For antenna simulation, the background can be Vacuum, and the boundary is Open. As for the simulation of waveguides like power dividers, filters, etc., the background can be conductors like PEC, while the boundary must be PEC.
– Intelligent Checking
You can check the project by analyzing and adjusting accordingly to ensure the validity of pre-processing settings, so that the simulation can run smoothly.
There are multiple checking options, including Overlapped Objects Checking, Background and Boundary Checking, Excitation Signal Checking, Excitation Source Checking, Probe Checking, Mesh Checking and Solver Checking. The passed items will be marked as “√”, while the failed ones will be marked as “×” with an error warning in the message board.
– Post-processing
For post-processing, ZWSim-EM supports checking 1D, 2D and 3D results, importing and exporting results, mathematically processing results, tracking the features of results, labeling, logs, etc. The simulation results can be shown intuitively and multi-dimensionally, making it convenient for you to post-process.

– Antennas/Antenna Arrays
– Radar
– Microwave Devices
– Signal Integrity Analysis
– Propagation of Electromagnetic Waves
– Broadband Electromagnetic Issues of Complex Structures

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