AN-SOF is a comprehensive software tool for the modeling and simulation of antenna systems and general radiating structures. It can be used

- to learn more about antennas
- to get insight into the behavior of a particular antenna
- to design better antennas
- to predict antenna performance
- to tune for performance
- to try several possibilities before building the real model

The program is based on an improved version of the so-called Method of Moments (MoM) for wire structures. The modeling of the structure can be performed by means of the AN-SOF specific 3D CAD interface. Electromagnetic fields, currents, voltages, input impedances, consumed and radiated powers, gain, directivity, and several more parameters can be computed in a frequency sweep and plotted in 2D and 3D graphical representations.

AN-SOF is an antenna simulation software that allows us

- to describe the geometry of the antenna
- to choose construction materials
- to describe the environment and ground conditions
- to describe the antenna height above ground
- to analize the radiation pattern and front-to-back ratio
- to plot directivity and gain
- to analize impedance and SWR (Standing Wave Ratio)
- to predict bandwidth

and to get several more parameters and plots.



AN-SOF has integrated graphical tools for the convenient visualization of the simulation results:

AN-XY Chart: This is a chart for plotting two related quantities, that is Y versus X. This tool permits plotting frequency-dependent quantities, such as current, voltage, impedance, reflection coefficient, VSWR, radiated power, consumed power, directivity, gain, radiation efficiency, radar cross section, etc. The current distribution on metallic structures can also be plotted as a function of position with this program. Besides, 2D radiation patterns can be represented for a near- or far-field as a function of a chosen angle or distance. Zoom with mouse support and several unit systems for the plotted results are available.  

AN-Smith: The famous Smith chart for the representation of impedances and admittances is implemented in this tool. An impedance/admittance curve in the Smith chart is obtained when frequency is varied. The frequency corresponding to each data point in the chart can easily be obtained by clicking with the mouse on the screen. Reflection coefficients and VSWR (Voltage Standing Wave Ratio) are also showed. Plots can be stored in independent files and opened later for a graphical analysis with AN-Smith. 
AN-Polar: Radiation and scattering patterns versus azimuth or zenith angles can be represented in this polar diagram, from which the width of radiation lobes and front-to-back ratios can be obtained. The represented field quantities include power density, directivity, gain, normalized radiation pattern, total electric field, field polarized components, and RCS. 
AN-3D Pattern: A complete view of the radiation and scattering properties of a structure can only be achieved with a fully angle-resolved pattern. This task can be accomplished with AN-3D Pattern, which implements colored mesh and surface for the clear visualization of radiation lobes, including a color bar-scale indicating the field intensities over the lobes. Zoom, translation and rotation of the 3D pattern can be performed. The represented quantities include the power density, normalized radiation pattern, directivity, gain, total field, linearly polarized field components, circularly polarized field components, and RCS. Linear and decibel scales are available.