Calculate the bistatic radar cross section of an electrically thin dielectric sheet. The sheet is modelled using the
thin dielectric sheet approximation and is illuminated by an incident plane wave.
Modify the model mesh in CADFEKO using the correct settings. A mesh is a discretised representation of a geometry model or mesh model used for simulation
in the Solver.
Calculate the transmission and reflection coefficients for a Jerusalem cross FSS (frequency selective surface) structure.
The cross is modelled with a periodic boundary condition and is excited with an incident plane wave.
Calculate the transmission coefficient of a second order, electrically thin bandpass FSS (frequency selective surface)
structure. The structure is modelled with a periodic boundary condition and is excited with an incident plane wave.
Simple examples demonstrating using continuous frequency range, using the MLFMM for large models, using the LE-PO
(large element physical optics) on subparts of the model and optimising the waveguide pin feed location.
Simple examples demonstrating using Feko application automation, matching circuit generation with Optenni Lab and optimising a bandpass filter with HyperStudy.
Feko is a comprehensive electromagnetic solver with multiple solution methods that is used for electromagnetic field analyses
involving 3D objects of arbitrary shapes.
EDITFEKO is used to construct advanced models (both the geometry and solution requirements) using a high-level scripting language
which includes loops and conditional statements.
One of the key features in Feko is that it includes a broad set of unique and hybridised solution methods. Effective use of Feko features requires an understanding of the available methods.
Feko offers state-of-the-art optimisation engines based on generic algorithm (GA) and other methods, which can be used
to automatically optimise the design and determine the optimum solution.
Feko writes all the results to an ASCII output file .out as well as a binary output file .bof for usage by POSTFEKO. Use the .out file to obtain additional information about the solution.
CADFEKO and POSTFEKO have a powerful, fast, lightweight scripting language integrated into the application allowing you to create
models, get hold of simulation results and model configuration information as well as manipulation of data and automate
repetitive tasks.
View the computed scattering width as a function of the bistatic observation
angle (ϕ) for a cylinder radius of
r=0.1 and r=0.6.
The scattering width is obtained by using the equation at the top of
the example with the values provided to simplify to
(1)
.
To use the equation in POSTFEKO, ensure
the magnitude of the electric field is displayed.
Select the Enable maths check box and enter the
following:
2*pi*500*ABS(self)^2
Figure 1. The scattering width of an infinite cylinder, modelled with
r=0.1 and r=0.6 where
r is the radius of the cylinder.
Compare the results with the literature reference (C.
A. Balanis, Advanced Engineering Electromagnetics, Wiley, 1989, pp. 607.).
The results agree well with the literature reference.