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# Category - Models

Explore a variety of antenna designs and examples created using AN-SOF in these articles.

Dive into detailed, step-by-step examples that guide users through various AN-SOF functionalities and workflows.
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 […]
A center-fed cylindrical antenna is the simplest example that we can simulate. It consists of a straight wire with a source at its center and becomes a half-wave dipole when the frequency is such that the length of the antenna is half the wavelength.
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 […]
A monopole is a vertical element connected to a ground plane and with the feed point at its base. In this example we will simulate a radio mast on an imperfect ground, which is used for broadcasting in the LF and MF bands.
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".
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!
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!
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.
Discover various wire antenna designs, including dipoles, monopoles, loops, and short antennas.
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.
Delve into the virtual realm of an ingenious multiband omnidirectional dipole antenna. Explore its design intricacies through simulation.
The Loop on Ground (LoG): A compact receiving antenna with a cardioid-shaped radiation pattern, achieving directionality through clever grounding and monopole design.
Explore magnetic loop antennas, favored in ham radio. Learn about their dual loop design, coupling via induction, and AN-SOF Simulator for accurate simulations.
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.
Frequency sweep simulation of a receiving circular loop antenna. The loop is modeled using conformal segments, which exactly follow the contour of the antenna geometry.
The monopole is used for AM (Amplitude Modulation) radio transmissions. The far-field radiation pattern in the Fraunhofer zone is distorted due to the finite conductivity of the soil.
The antenna is composed of four vertical monopoles over ground. Each monopole is fed at its base by a voltage source of the same amplitude and phase as the others.
Center-fed half-wave dipole antenna at 300 MHz. The wavelength is close to 1 meter, so the dipole length equals 0.5 meters.
Simulation of a folded dipole using curved wires at the dipole ends. The curved part is modeled exactly using conformal segments.
Frequency sweep simulation of a cylindrical dipole antenna. The results show how the current distribution along the wire approaches a sine function.
Experience versatile communication with this 5-in-1 J-Pole Antenna – your go-to solution for multiband excellence.
Explore models and designs of travelling wave antennas, such as helices and Yagis.
Discover the Quadrifilar Helix Antenna's prowess in boosting NOAA satellite signal reception. Unveil its efficiency for superior connectivity and data capture.
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.
Explore models of various antenna arrays in these articles.
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 antenna where implicit models of transmission lines are used in the feeding system of this phased array.
At Golden Engineering we are passionate about antenna simulation. On this last day of the year we want to give you our Log-Periodic Christmas Tree made with AN-SOF.
Discover the Dual Reflector Moxon Antenna at 145 MHz: 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.
Broadside antenna array composed of four parallel half-wave dipoles.
Frequency sweep simulation of a log-periodic array of linear elements.
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.
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!
Elevate your satellite connections with the Moxon-Yagi Dual Band VHF/UHF Antenna. This innovative design optimizes signal reception for seamless communication.
Discover models of aperture and reflector antennas in these articles.
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.
Explore models of fractal antennas, showcasing their unique designs and properties.
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.
Discover models of microstrip antennas, patch antennas, and PCB designs for various applications.
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.
Dive into models featuring antennas interacting with complex structures or mounted on them.
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.
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.
Explore programming scripts designed to interface with AN-SOF, enabling users to run parametric simulations.
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!