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    AN-SOF Antenna Software

    A comprehensive software tool for the modeling, analysis, and design of antennas. Build up complex designs and get accurate results quickly.

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    Antenna Simulation for Everyone

    AN-SOF is the best combination of ease of use and accuracy you can find in an electromagnetic simulator for the modeling of antennas and wire structures.

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    Customer Reviews

    What do our customers think about AN-SOF?

    Ing. Antonio Manco, RF Manager at Tecnoalarm

    "Intuitive and friendly software. I found that the simulations are very close to reality. AN-SOF is an excellent tool for modeling antennas."

    Simon Shaw, Homebrew antenna hobbyist

    "AN-SOF is an easy to use, great value piece of software for designing antennas, especially useful for ham radio amateurs and hobbyists."

    Keith Rawlings G4MIU, RadioUser Magazine

    "I use AN-SOF extensively when writing my AerialsNow! column. I find its excellent graphics abilities essential for presenting data in a format that is easily understood by readers."

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    Software Suite

    Design, enter data, and display a collection of graphs and charts with ease.

    AN-SOF > Antenna Modeling & Simulation Software
    AN-XY Chart > 2D plots in rectangular coordinates
    AN-Smith > Smith chart to display impedances
    AN-Polar > 2D lobes in polar coordinates
    AN-3D Pattern > 3D view of radiation patterns

    News

    Check out for the latest news on AN-SOF updates and antenna models.

    22Nov, 2022
    QFH Antenna for NOAA Satellite Reception

    This Quadrifilar Helix (QFH) antenna can be used for signal reception from NOAA satellites. These are omnidirectional antennas made up of 4 wires with a helical shape. This design is about 0.14λ in diameter and the length of each helix is 0.4λ. It resonates at 137.5 MHz and has a bandwidth of 6% (SWR < 2). The purpose of the helices is to block surrounding interference.

    In free space, the radiation pattern actually points downward when the coaxial cable (the source in the simulation) is connected to the top of the antenna. However, when a real ground plane is added and the antenna is placed 5 meters high, multiple lobes and a more omnidirectional pattern are obtained, as expected.

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    7Nov, 2022
    Biquad UHF Antenna Array

    This 4-element biquad array resonates at 434 MHz. The wires that connect the driven element to the reflector work as a two-wire transmission line that allows us to obtain an input impedance of 50 + j0 Ohm.

    It may be noticed that the polar plots are on a log scale. ARRL-style log scaling is coming in the December release of AN-SOF!

    More info >

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    24Oct, 2022
    Broadband Directional Antenna

    This is a 4 element broadband directional antenna. More than 50 MHz of bandwidth (SWR < 1.5) around 285 MHz. Gain 7 to 8 dBi. Length 0.52 m and maximum width 0.6 m.

    The driven element is shaped like a double arrow and has a folded parasitic element right in front of it.

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    10Oct, 2022
    AN-SOF 7.8 is ready!
    • Quickly view input impedance, VSWR, directivity, gain and efficiency in the new Results tab.
    • Click the Export Results button on the toolbar to export this data to a spreadsheet.
    • The wavelength is now displayed in the Frequency panel while entering the operating frequency.
    • Automatically close all charts when exiting AN-SOF or keep them open to analyze the plots. Go to Tools > Preferences > Options and check “Close charts when exiting AN-SOF”.
    • A great strength of AN-SOF is the documentation. Explore the new User Guide here >.
    • Coming soon: our online Knowledge Base!
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