Antennas and Beyond!


This is a blog dedicated to exploring the fascinating world of antenna design and simulation. Whether you’re a beginner or an experienced engineer, you’ll find valuable insights into antenna modeling, theory, numerical methods, and practical examples of antenna models using AN-SOF Antenna Simulation Software.

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Recent Articles

  • Efficient NOAA Satellite Signal Reception with the Quadrifilar Helix Antenna

    Efficient NOAA Satellite Signal Reception with the Quadrifilar Helix Antenna

    Discover the Quadrifilar Helix Antenna’s prowess in boosting NOAA satellite signal reception. Unveil its efficiency for superior connectivity and data capture.

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  • Enhancing VHF Performance: The Dual Reflector Moxon Antenna for 145 MHz

    Enhancing VHF Performance: The Dual Reflector Moxon Antenna for 145 MHz

    Discover the Dual Reflector Moxon Antenna at 145 MHz: Amplified Gain and Enhanced Performance for VHF Enthusiasts.

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  • Biquad UHF Antenna Array

    Biquad UHF Antenna Array

    This relatively compact 4-element biquad array resonates at 434 MHz.

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  • 145 MHz 5-Element Array of Square Loops

    145 MHz 5-Element Array of Square Loops

    Model of a 145 MHz 5-Element Array of Quads or Square Loops.

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  • Advantages of AN-SOF for Simulating 433 MHz Spring Helical Antennas for ISM & LoRa Applications

    Advantages of AN-SOF for Simulating 433 MHz Spring Helical Antennas for ISM & LoRa Applications

    Struggling with complex helical antenna designs for LoRa & ISM? AN-SOF overcomes limitations of traditional methods, enabling accurate simulations of 433 MHz spring helical antennas.

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  • Broadband Directional Antenna

    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.

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  • How to Export Data and Plots

    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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  • How to Merge Projects

    How to Merge Projects

    Wires can be imported into AN-SOF from another AN-SOF project, so wire structures of different projects can be merged in a single project.

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  • On the Modeling of Radio Masts

    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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  • The Equivalent Circuit of a Balun

    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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  • Setting the Radiation Pattern Center

    Setting the Radiation Pattern Center

    From the far field point of view, the whole structure of an antenna and its surroundings is reduced to a single point at the origin (X,Y,Z) = (0,0,0).

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  • H-Field Option in Preferences

    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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  • AN-SOF 7.80 is ready!

    AN-SOF 7.80 is ready!

    New version of Antenna Simulation Software: AN-SOF 7.8.

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  • New AN-SOF User Guide

    New AN-SOF User Guide

    Explore the new AN-SOF User Guide >, where you will find detailed information about its many features, as well as step-by-step examples and tips to help you quickly move forward with your antenna modeling projects.

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  • 5 Examples with less than 50 Segments

    5 Examples with less than 50 Segments

    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

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  • A Closer Look at the HF Skeleton Slot Antenna

    A Closer Look at the HF Skeleton Slot Antenna

    Explore the intricacies of the HF Skeleton Slot Antenna – a bi-directional marvel offering versatile HF communication.

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  • The 5-in-1 J-Pole Antenna Solution for Multiband Communications

    The 5-in-1 J-Pole Antenna Solution for Multiband Communications

    Experience versatile communication with this 5-in-1 J-Pole Antenna – your go-to solution for multiband excellence.

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  • New Release: AN-SOF 7.50

    New Release: AN-SOF 7.50

    New version of Antenna Simulation Software: AN-SOF 7.50.

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  • The 17m Band 2-Element Delta Loop Beam: A Compact, High-Gain Antenna for DX Enthusiasts

    The 17m Band 2-Element Delta Loop Beam: A Compact, High-Gain Antenna for DX Enthusiasts

    Conquer the 17-meter band with the 2-element Delta Loop Beam antenna. This compact, high-gain design boasts near-perfect impedance matching, making it perfect for DX enthusiasts. Download the AN-SOF model and unlock its potential!

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  • AN-SOF 7.20 is ready!

    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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  • Enhancing Satellite Links: The Moxon-Yagi Dual Band VHF/UHF Antenna

    Enhancing Satellite Links: The Moxon-Yagi Dual Band VHF/UHF Antenna

    Elevate your satellite connections with the Moxon-Yagi Dual Band VHF/UHF Antenna. This innovative design optimizes signal reception for seamless communication.

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  • New Release :: AN-SOF 7.10 ::

    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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  • Script for Modeling 2-Element Quad Array

    Script for Modeling 2-Element Quad Array

    2-element quad antennas are very popular due to their compact size and gain similar to a more element Yagi. In addition, they can be designed to obtain an input impedance of 50 Ohm.

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  • An 80 meters DX Antenna: A Spiral Loop

    An 80 meters DX Antenna: A Spiral Loop

    A half-wave dipole would have a length of 40 meters in this band (3.75 MHz), difficult to install at home due to lack of space. Not to mention the complaints from our neighbors. A spiral loop is attractive for its small size and relative ease of tuning because it is basically an inductor.

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  • AN-SOF 7.0 is Here!

    AN-SOF 7.0 is Here!

    AN-SOF 7.0 is Here! Run bulk simulations and process multiple input files with just one click. We have chosen the NEC format for the input files as it is a standard adopted by many users. Forget about running the simulations one by one, run them all at once.

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  • New Release :: AN-SOF 6.40 ::

    New Release :: AN-SOF 6.40 ::

    New Release :: AN-SOF 6.40 :: Tabular input of linear wires as well as sources and loads. List of recently open projects in the File menu. Zoom in and out by rotating the mouse wheel.

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  • New Release :: AN-SOF 6.20 ::

    New Release :: AN-SOF 6.20 ::

    New Release :: AN-SOF 6.20 :: Radiation patterns plotted in AN-Polar can now be exported as *.ant files. The *.ant format can then be imported into the Radio Mobile propagation software. Exportation of linear wires in DXF format has been added.

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  • AN-SOF Antenna Simulation Best Practices: Checking and Correcting Model Errors

    AN-SOF Antenna Simulation Best Practices: Checking and Correcting Model Errors

    Refine AN-SOF antenna simulations. Identify and resolve errors with precision, ensuring model integrity.

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  • Adjusting the Color Bar in AN-3D Pattern

    Adjusting 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 to obtain increments in multiples of 5 or the value we want.

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  • How to Speed Up Simulations in AN-SOF: Tips for Faster Results

    How to Speed Up Simulations in AN-SOF: Tips for Faster Results

    Learn how to optimize simulation speed in AN-SOF Antenna Software. Follow valuable tips for faster results by adjusting segments, resolution, and settings. Turbocharge your antenna simulations!

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