\lambda_0 = \frac = 0.3m = 300mm Ī half-wave dipole, therefore, should have a length of 150mm. Note that at the center frequency f c = 1GHz, the operating wavelength is: Therefore, we will not get into the details of defining variables at this point. The objective of this tutorial lesson is to teach the basics of running a simulation rather than parameterizing a geometrical construction. The geometry of the dipole antenna created by the wizard is fully parameterized.
For this project, you will accept the default computational domain and the default PML boundary conditions.
This is required for modeling an open-boundary problem. By default, a convolutional perfectly matched layer (PML) boundary condition is assumed at all the six faces of the domain box. By default, the domain box is placed at an offset of 0.25λ 0 away from the largest bounding box of your physical structure. In the navigation tree on the left, you see three objects listed under a perfect electric conductor (PEC) material group called "DIPOLE":Īlso note that a blue domain box is placed around your dipole antenna structure. A close look at the physical structure reveals that it consists of two thin vertical cylinders connected through a short vertical line at the center. The geometry of a dipole antenna appears at the center of the project workspace. The dipole antenna geometry in the project workspace and the highlighted additions to the navigation tree. From the same dialog, you can also set the project’s length units, frequency units, center frequency and bandwidth. This opens up the New Project Dialog, where you can enter a title for your new project and set its path on your hard drive. Or you can initiate a new project by selecting the New button of the System Toolbar or using the keyboard shortcut Ctrl+N. You can start drawing objects and build up your physical structure right away. By default, EM.Cube opens a blank project with the name “UntitledProj0” in its CubeCAD Module. Open the EM.Cube application by double-clicking on its icon on your desktop. We strongly recommend that you read through the first few tutorials and study them carefully before setting up your own projects.ĭownload projects related to this tutorial lesson Getting Started You will also define far-field radiation pattern and near-field sensor observables. You will examine the port definition observable for computing S/Z/Y parameters. Specifically, you will use the wire dipole wizard to create the geometry of a resonant half-wave dipole antenna in the project workspace. This tutorial will guide you through all the necessary steps to set up and perform a basic FDTD simulation and visualize and graph the simulation results. 10 Plotting the 2D Radiation Pattern Graphs.8 Plotting Scattering and Impedance Parameters.
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