New and Updated Models, Apps, and Add-ins in Version 6.4
Optimizing the Front End of a Conical Horn Lens Antenna
In this example, a parameterized lens geometry is transformed into a more effective lens shape, resulting in improved realized gain for the antenna. Shape optimization removes the need for explicit parameterization and can achieve comparable or even better performance in a fraction of the time compared to multiple parametric sweeps.
Microstrip Patch Antenna Surrogate Model
This example builds surrogate models with deep neural network (DNN) training to quickly estimate the performance of a microstrip patch antenna based on four design parameters: patch length, tuning stub length, dielectric constant of a substrate, and frequency. The model also simulates a full finite element method (FEM) model using asymptotic waveform evaluation of the computed S-parameters to efficiently evaluate the frequency response with fine frequency resolution.
Embedded Scatterer on a Substrate
A plane transverse electric (TE)–polarized electromagnetic wave is incident on a metallic sphere embedded on a substrate. In this electromagnetic scattering problem, the far-field variables are computed for a few different elevation angles of incidence.
MRI Implant Heating
This MRI implant heating tutorial model shows the RF-induced heating on a passive conductive polyaxial screw implant inserted into C3-C4-C5 anatomical vertebrae and plunged into a jelly phantom brick so as to mimic the tissue enclosing the spine. The phantom has standard physical properties and geometry as reported in the ASTM‑F2182‑19e2 standard.
Efficient Modeling of a Spherical Radome
This model demonstrates an efficient approach to simulate a thin, spherical, large radome using a 2D axisymmetric formulation with cubic discretization. Using higher-order elements such as cubic element on a coarse mesh can significantly reduce computational cost while preserving accuracy.
Transient Analysis of a Printed Dual-Band Strip Antenna
This model demonstrates how to represent lossy conductive surface using a Transition Boundary Condition in the time domain.
Computing the Radar Cross Section of a Perfectly Conducting Sphere
This model uses toolbar buttons to automatically set up a quarter-sized geometry and user-specified Symmetry Plane features.
RCS of a Metallic Sphere Using the Boundary Element Method
This model utilizes a toolbar button to build a half-sized geometry and configure symmetry properties in the physics interface settings.
Frequency Selective Surface, Periodic Complementary Split Ring Resonator
The new physics feature, Periodic Structure, is demonstrated in this example. The modeling workflow is now more streamlined for building periodic models such as metamaterials.
Fresnel Equations
This model uses the Periodic Structure feature to quickly set up a virtually infinite structure in the xy-plane.
Impedance Matching of a Lossy Ferrite 3-Port Circulator
The steps for building the geometry in the model has been simplified. The model utilizes a Frequency Domain Source Sweep study to construct the full S-parameter matrix instead of using the conventional port sweep.
Transmission Line Parameters of a Coaxial Cable
The new physics interface, Transmission Line, Parameters, is used to compute the distributed parameters of a coaxial cable. Previously, the computing was done with two physics interfaces through a multiphysics coupling. It is now possible to do it through a single dedicated physics interface with less boundary conditions.