Categories

  • 5 Examples with less than 50 Segments

    From this link > you can download 5 examples of antenna models that have less than 50 segments, so the calculations can be run with the trial version of AN-SOF: 2 Element Quad 2 Element Delta Loop HF Skeleton Slot Inverted V 5 Element Yagi-Uda

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  • An HF Skeleton Slot Antenna

    It is an array of two tightly coupled loops with a bi-directional pattern. Both loops are linked to share a single feed point. This antenna can operate in the 14 to 28 MHz bands with the appropriate impedance matching. It is self-resonant when the perimeter of each loop is around one wavelength. In this example, each […]

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  • Equivalent circuit of a balun

    A balun can be modeled in AN-SOF using an equivalent generator, as the figure below shows. Since voltage sources admit an internal impedance, we can adjust its resistive part to match the antenna input resistance. Read more >

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  • Multiband J-Pole Antenna

    This design is for 5 bands on a single pole. Each “J” corresponds to a band and therefore the feed point changes depending on the frequency. The resonance frequency is indicated in each case, which can be changed by moving the feed point. The height is about 5 m. Download >

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  • New Release: AN-SOF 7.50

    More compatibility for those who use the NEC format: RP, LD, GM, GS, GH, GA, and EX5 commands can now be imported into AN-SOF.  The Note panel now displays an error report when importing NEC files. New Zin button on the toolbar for quick access to input impedances and VSWR. Enjoy!

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  • 145 MHz 5-Element Array of Square Loops

    Here is a relatively compact array of 5 square loops for 145 MHz. It does not need a matching network since the input impedance is practically 50 Ohm. Gain 12 dBi. Beamwidth 50 deg. F/B 20 dB. Download >

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  • 17 m Band Spider Delta Loop

    These are compact, lightweight antennas that can be used for DX applications. This 2-element array is the simplest we can build to get a directional antenna using delta loops. It is practically resonant with 50 Ohm of input impedance near the band center. This is an example where we need to enable the Exact Kernel […]

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  • AN-SOF 7.20 is ready!

    See how the radiation pattern changes with frequency in AN-3D Pattern. The near field heatmap and current distribution can also be viewed dynamically by changing the operating frequency.

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  • Moxon-Yagi Dual Band VHF/UHF Satellite Antenna

    This model is self-resonant (50 Ohm) in the analyzed frequency range, so it does not need a matching network. Adjust the indicated gaps to minimize the VSWR. Download VHF > Download UHF >

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  • New Release :: AN-SOF 7.10 ::

    AN-SOF 7.10 is now available for download! Access the input impedance and VSWR easily by going to the Main menu > Results. This avoids selecting the segment where the source is located to access the input impedance.

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