Frequency Selective Surface Simulator
Application ID: 24371
This app demonstrates the following:
- Designing an app for small screens such as smartphones
- User-interface navigation with a top menu typically used on websites
- Geometry parts and parameterized geometries
- Visualizing periodicity of a geometry with material rendering
- Warning messages on icons when properties are not updated
- Sending an email with a report attached when the computation is finished
Frequency selective surfaces (FSS) are periodic structures that generate a bandpass or a bandstop frequency response. They are used to filter or block RF, microwave, or, in fact, any electromagnetic wave frequency. For example, you see these selective surfaces on the doors of microwave ovens, which allow you to view the food being heated without being heated yourself in the process.
The app simulates a user-specified periodic structure chosen from the built-in unit cell types. It provides five unit cell types popularly used in FSS simulations along with two predefined polarizations in one fixed direction of propagation that has normal incidence on the FSS. The analysis includes the reflection and transmission spectra, the electric field norm on the top surface of the unit cell, and the dB-scaled electric field norm shown on a vertical cut plane in the unit cell domain.
You can change the polarization, center frequency, bandwidth, number of frequencies, substrate thickness and its material properties, and unit cell type (circle, ring, split ring, etc.) as well as their geometry parameters, including periodicity (cell size).
This application example illustrates applications of this type that would nominally be built using the following products:
however, additional products may be required to completely define and model it. Furthermore, this example may also be defined and modeled using components from the following product combinations:
The combination of COMSOL® products required to model your application depends on several factors and may include boundary conditions, material properties, physics interfaces, and part libraries. Particular functionality may be common to several products. To determine the right combination of products for your modeling needs, review the Specification Chart and make use of a free evaluation license. The COMSOL Sales and Support teams are available for answering any questions you may have regarding this.