Electromagnetics Blog Posts

Evaluating a Schottky Diode with a Semiconductor Benchmark Model
We present a model of a Schottky diode with benchmarked results, validating the use of simulation to analyze the performance of semiconductor devices.

Calculating the Spectral Properties of an Optical Ring Resonator
The effect of a “whispering gallery” can be observed (a similar way) in another field of science entirely: light waves traveling in an optical ring resonator.

Studying the Program and Erase Cycle of an EEPROM Device
Using the Semiconductor Module, you can study the program and erase cycles of an electrically erasable programmable read-only memory (EEPROM) device.

Investigating a Three-Port Ferrite Circulator Design with RF Simulation
Get a quick introduction to microwave circulators and modeling them with the RF Module. The featured example is a three-port ferrite circulator.

Optimizing ISFET Designs with Multiphysics Simulation
Ion-sensitive field-effect transistors (ISFETs) measure pH levels for soil analysis, the production of dairy products, and more. Multiphysics simulation can help us optimize these devices.

The Nonparaxial Gaussian Beam Formula for Simulating Wave Optics
Here’s your introduction to the nonparaxial gaussian beam formula, which is used for simulating wave optics problems in COMSOL Multiphysics®.

Modeling a MOS Capacitor with the Semiconductor Module
MOS capacitors (MOSCAPs) contain 3 main parts: a semiconductor body or substrate, an insulator film, and a metal electrode (or gate). You can use the Semiconductor Module to model MOSCAP designs.

How to Perform a Nonlinear Distortion Analysis of a Loudspeaker Driver
For a thorough and complete analysis of a loudspeaker driver design, acoustics engineers need to perform nonlinear time-domain studies in addition to frequency-domain studies.