RF Modeling in COMSOL Multiphysics®

This 4-day online training course will cover the modeling of antennas, waveguides, transmission lines, microwave circuits, cavities, couplers, filters, scattering, periodic structures, metamaterials and multiphysics couplings using COMSOL Multiphysics^® and the RF Module.

The following schedule of sessions is planned; however, topics may be adjusted depending on the interests of attendees and time permitting.

Day 1: Modeling Resonant Structures, Waveguides, and Transmission Lines

11 a.m.–1 p.m. EST

In this session, you will learn how to set up basic electromagnetic models of devices such as antennas, waveguides, filters, circuits, cavities, and metamaterials using the RF Module. You will also learn how to include different types of excitation, such as plane-wave, dipole-wave, and cylindrical-wave excitation, as well as how to use the Port condition to excite a waveguide structure, evaluate the scattering parameters, and plot the electric field propagation for different phases without recomputing the model.

2–4 p.m. EST

You will learn approaches for modeling RF waveguide and transmission lines, including how to use propagation constants, impedance, and S-parameters to characterize these devices. You will also learn about the time-harmonic transmission line equation for the electric potential for electromagnetic wave propagation along one-dimensional transmission lines, as well as an approach for modeling time domain reflectometry and signal integrity analysis. The application area covers coaxial cable and RF waveguides.

You will also learn how to model resonant structures. We will evaluate the resonant frequency and quality factor of closed- and open-cavity structures by solving the eigenvalue problem. We will discuss applications such as microwave cavities, optical resonators, and coil resonance structures.

Day 2: Modeling Passive Devices, Couplers, Filters, and Antennas

11 a.m.–1 p.m. EST

In this session, you will learn approaches for modeling passive devices, RF and microwave couplers, and filters as well as for combining resonant structures and transmission lines. We will also discuss how to quantify the electric and magnetic field distribution, impedance, and S-parameters. The application area involves 3-dB couplers, power dividers, and band-pass filters.

2–4 p.m. EST In this session, you will learn the process for modeling transmitting and/or receiving radiated electromagnetic energy devices. We will demonstrate the use of the Impedance boundary condition for taking into account the skin effect at a very high frequency and efficiently modeling different types of antennas. We will also introduce the use of perfectly matched layers (PMLs) in order to truncate the modeling domains effectively. We will discuss various geometry and meshing techniques needed while considering PMLs. You will learn how to quantify far-field patterns, losses, gain, directivity, impedance, and S-parameters. These techniques can be applied to the modeling of microstrip patch antennas, Vivaldi antennas, and dipole antennas.

Day 3: Modeling Radar Cross Sections (RCSs) Using Scattering Analysis and Periodic Structures

11 a.m.–1 p.m. EST

In this session, we will discuss how the background electromagnetic field of known shape, such as a plane wave, interacts with various materials and structures. We will showcase how to quantify the scattering and absorption cross sections as well as the associated losses. You will also learn how to visualize the total fields and scattered fields. Major applications involve Mie scattering and RCS calculations.

2–4 p.m. EST

In this session, you will learn approaches for modeling periodic structures that repeat in one, two, or all three directions, as well as how to perform an analysis of a single unit cell with Floquet periodic boundary conditions. Applications include frequency selective surfaces, optical gratings, and electromagnetic band gap structures.

Day 4: Modeling Dispersive Materials and Multiphysics Analysis

11 a.m.–1 p.m. EST

In this session, you will learn an approach for modeling harmonics via a transient wave simulation using nonlinear material properties. We will showcase the modeling capability of full time-dependent wave equation in dispersive media such as plasmas and semiconductors. You will also learn an approach for modeling a linear material model describable by a sum of Drude–Lorentz resonant terms.

2–4 p.m. EST

In this session, you will learn how an electromagnetic wave interacts with any loss materials. We will observe how the losses lead to the rise in temperature over time. We will showcase the approach of performing couplings bidirectionally with the thermal equation, with any losses computed from the solution of the electromagnetic problem. Applications for this modeling approach include thermal drift in a cavity filter, microwave ovens, absorbed radiation in living tissue, tumor ablation, effects of deformation on the modes of propagation, and stress-optical effects.

Suggested Background

This course assumes familiarity with the fundamentals of RF modeling. We strongly recommend that those new to COMSOL Multiphysics^® take the Introduction to COMSOL Multiphysics^® course prior to attending this class.

Pricing & Payment Methods

The price for this 4-day course is $995 per person.

We offer an academic discount to those who qualify. The academic rate for this course is $795.

We accept payment by credit card, company purchase order, check, wire, or direct deposit. For security purposes, please do not send credit card information via email.

This training course will be recorded, and the recording will be made available to all paid registrants.

Mail payments or purchase orders to:

COMSOL, Inc. 100 District Avenue Burlington, MA 01803

Fax purchase orders to:

COMSOL, Inc. ATTN: Training 781-273-6603