Category - Models

In the directory where AN-SOF was installed there is a folder called “Examples” which contains many examples of antennas and wire structures. The default directory is C:\AN-SOF X\Examples where X is the AN-SOF version. You can also download the examples from here >. We constantly upload files with examples on our website. You will find […]

Discover 5 antenna models with less than 50 segments in AN-SOF Trial Version. These examples showcase the capabilities of our software for antenna modeling and design, allowing you to evaluate its features for your projects.

Learn how to simulate a center-fed cylindrical antenna using AN-SOF software. This step-by-step guide covers setup, geometry creation, simulation, and result analysis. Understand dipole characteristics through practical examples.

This step-by-step guide empowers you to simulate circular loop antennas in AN-SOF. We'll configure the software, define loop geometry, and explore how its size relative to wavelength affects radiation patterns and input resistance. Gain valuable insights into this fundamental antenna type!

Explore the design and simulation of monopole antennas over imperfect ground using AN-SOF. Learn how ground conditions impact performance and optimize efficiency for LF/MF broadcasting applications.

The helix is a good example where we need curved segments to describe the geometry of the antenna. When the length of the helix is of the order of or greater than the wavelength, it can work in the so-called "axial mode".

After learning how to simulate a Cylindrical Antenna >, we are ready to build a dipole array. A 3-element Yagi-Uda antenna, consisting of a reflector, a driven element, and a director, is shown in Fig. 1, where the coordinates of the wire ends are indicated in meters. Step 1 | Setup Go to the Setup […]

Two-wire transmission lines can be modeled explicitly in AN-SOF. In this example, the line will have a single wire but there will be a ground plane below it, so we have the mirror image of the wire as the return of the line.

The ability of AN-SOF to simulate at extremely low frequencies can be demonstrated with a model of an RLC circuit that will resonate at only 800 Hz, so the wavelength is 375 km!

Welcome to 'The Antenna Lab,' where we explore antenna concepts and simulations in a practical and intuitive way. Today is March 14th—Pi Day! What better way to celebrate than by demonstrating how a short dipole can have a radiation resistance of 3.14 Ohms?

Simulating a Super J-Pole: A 2m Antenna Analysis. This article describes a 5-element collinear antenna design for the 2m band, its radiation pattern, VSWR, and key components for optimal performance.

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

Discover the design and simulation of a multiband omnidirectional dipole antenna using AN-SOF. Operating at six key frequencies, this antenna combines closely spaced parallel dipoles into a single feed point. Explore how simulation reveals performance patterns and empowers your antenna experiments.

The Loop on Ground (LoG) antenna offers a compact solution for directional reception with a cardioid radiation pattern. This article explores its design and highlights the efficiency achieved through the Conformal Method of Moments (CMoM).

Explore dual-loop magnetic antenna design and simulation with AN-SOF. Model performance at five frequencies, showcasing radiation patterns, current distributions, and tuning values. Automated bulk simulations streamline the process.

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.

Radiating towers or radio masts can be modeled in AN-SOF with a high degree of detail. This example shows a quarter-wave monopole antenna connected to a radial wire ground screen on a real ground plane.

The total length of the loop is about 0.4 wavelengths, so the current distribution shows a semi-cycle of a sine function.

The Quadrifilar Helix (QFH) antenna, with its unique design and circular polarization, ensures efficient NOAA satellite signal reception. This article explores the history, key characteristics, and practical modeling of QFH antennas using AN-SOF, providing valuable insights for RF engineers and enthusiasts.

Inverted V antenna over real ground. The operating frequency is 7.2 MHz which corresponds to a wavelength of almost 40 meters.

The horizontal arms of the V-antenna are 3 wavelengths long, so six semi-cycles of a sine function can be seen as a current distribution along the arms.

Frequency sweep simulation of a directional helix antenna backed by a ground plane of finite size. The ground plane is modeled using a circular grid of thin wires.

Directional helix antenna backed by a perfect ground plane. A directional radiation pattern is obtained pointing towards the helix axis.

Simulation of a Yagi antenna that consists of seven linear wires. A directional radiation pattern is obtained as can be expected.

Simulation of a Yagi antenna that consists of five linear wires. The driven element is a folded dipole which does not change the radiation pattern shape, but it changes the input impedance for an easier impedance matching.

Simulation of a Yagi antenna that consists of three linear wires. A directional radiation pattern is obtained as can be expected.

This article explores the design and analysis of log-periodic sawtooth arrays (LPSA) for HF communications. It covers their geometric principles, frequency-independent characteristics, and demonstrates how AN-SOF simulation software models these antennas, providing valuable insights into their performance and behavior.

Build a high-performance Lazy-H antenna for the 10-meter band. Learn to design and simulate your own antenna with this guide. Calculate performance with AN-SOF and discover the benefits of wide bandwidth and excellent gain. Watch the included video tutorial for step-by-step modeling.

The Extended Double Zepp (EDZ) antenna offers higher gain than a half-wave dipole, but matching to 50-Ohm coax is difficult. This article explores a phased array design using two EDZs for directional radio transmission, achieving good gain and easier impedance matching.

Explore the Four-Square Array: a phased array using six transmission lines in its feeding system. Perfect for directional control, it combines simplicity and performance for RF engineers, ham operators, and antenna designers.

Discover the Dual Reflector Moxon Antenna at 145 MHz (2m band): Amplified Gain and Enhanced Performance for VHF Enthusiasts.

Need a compact directional antenna for your UHF needs? This 4-element Biquad antenna, designed with AN-SOF, packs a powerful punch in a relatively small space. Perfect for UHF applications where space is at a premium!

Want a directional antenna for the 2m band? This article explores modeling a 5-element quad array in AN-SOF, achieving good gain and front-to-back ratio.

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

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!

The reflector is modeled by a grid of curved segments. The hole sizes are small compared to the wavelength near the center of the parabola, buy they approach half-wavelength away from the center.

Directional antenna consisting of a parabolic grid reflector and a Yagi-like array at the location of the parabola's focus.

Simulation of a horn antenna fed by a rectangular waveguide.

Dive into the fascinating world of fractal antennas! This article explores their revolutionary design principles using AN-SOF simulation software. Discover how self-similar patterns unlock wider bandwidths, smaller sizes, and superior efficiency compared to traditional antennas.

This MI2 Fractal Loop antenna was designed by Dr. Nathan Cohen. Results were reported in Cohen, N. L., and Hohlfeld, R. G., "Fractal Loops and the Small Loop Approximation", Communications Quarterly, 6, 77-81, (1996).

This random loop antenna was designed by VE9SRB in an attempt to demonstrate that a MI2 Fractal Loop-like performance can be obtained with an arbitrarily shaped geometry.

Revolutionize antenna modeling with our simplified method. Accurately simulate 2.4 GHz wheel antennas for optimal performance.

Microstrip patch antennas with capacitive feeding have been key in the development of the cell phone industry. This way of feeding compact antennas, for instance PIFAs, has made it possible to cancel out the probe reactance and simplify the matching network.

Microstrip patch antenna over a dielectric substrate and backed by a perfect ground plane.

Microstrip patch dipole antenna over a dielectric substrate and backed by a perfect ground plane.

Microstrip array of four rectangular patches over a dielectric substrate and backed by a perfect ground plane.

Discover the spiral loop antenna, a compact alternative for 80 meters band DXing. Explore its challenges and benefits, and learn how AN-SOF enables accurate modeling of its intricate wire geometry for optimal performance.

This simulation shows a wire grid model of a ship sailing in the ocean and having two dipole antennas at its top.

Simulation of a plane wave reaching the path of an airplane.

Simulation of a car above ground having a dipole antenna on its roof.

This article presents a Nelder-Mead optimization workflow for antenna design using AN-SOF Engine and Scilab. We demonstrate automated Yagi-Uda tuning via weighted cost functions, covering script implementation, NEC file modification, and result analysis for VSWR, gain, and front-to-back ratio optimization.

Learn to optimize antennas with genetic algorithms using AN-SOF and Scilab. Includes ready-to-use scripts for population evolution and cost functions targeting gain, VSWR, and front-to-back ratio in a 3-element Yagi-Uda design.

Master cost function design for antenna optimization: weighting strategies, parameter normalization, and performance trade-offs. Practical methods to balance gain, VSWR, and impedance matching in your designs.

This guide explains how to run a script in Scilab to simulate a 3-element Yagi-Uda antenna and get the results as a function of the spacing between the elements. A second script allows us to plot the antenna gain versus element spacing.

Struggling to design optimal 2-element quad arrays? This article explores automating the process using Scilab scripts and AN-SOF's bulk processing. Generate & simulate multiple configurations with varying element spacing, saving time and uncovering potential performance improvements!