Category - How-To Guides

Simulation of a dipole antenna on a car roof, radiation pattern, and simulation times table.

How to Speed Up a Simulation

There is always a trade-off between speed and accuracy. However, we often need to prioritize speed in the first simulations of an antenna model. Here are some tips to speed up the calculations.
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H-field calculation option in the AN-SOF Preferences window.

H-Field Option in Preferences

We see that most of the time we are interested in calculating only the E-field in antenna projects when we are talking about the near field. For this reason, we have added an option to enable or disable the automatic calculation of the H-Field.
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Equivalent Circuit of a Balun in AN-SOF.

The Equivalent Circuit of a Balun

A balun can be implicitly modeled in AN-SOF using an equivalent generator, as the figure below shows. Since voltage sources admit an internal impedance, we can adjust its resistance value to match the antenna input resistance.
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Modeling Radio Masts in AN-SOF.

On the Modeling of Radio Masts

Radiating towers or radio masts can be modeled in AN-SOF with a high degree of detail, as shown in the figure below. Since we already know the omnidirectional shape of the radiation pattern, what interests us is to calculate electric field values at ground level for a given input power.
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Exporting data and plots from AN-SOF.

How to Export Data and Plots

It is important to be able to export data so we can write reports and share our progress with colleagues. Simulation results can be exported to CSV (Comma Separated Values) files, where data are saved in tabular format.
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Adjusting the Color Bar in a 3D Radiation Pattern Plot.

The color bar in AN-3D Pattern

It is important to have control over the scales of the graphs for a better presentation and interpretation of the results. We can adjust the maximum and minimum values of the color bar in AN-3D Pattern.
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