Category - Wire Antennas

Dipole Antenna

Frequency sweep simulation of a cylindrical dipole antenna. The results show how the current distribution along the wire approaches a sine function.
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Half-Wave Dipole

Center-fed half-wave dipole antenna at 300 MHz. The wavelength is close to 1 meter, so the dipole length equals 0.5 meters. 
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Folded Dipole

Simulation of a folded dipole using curved wires at the dipole ends. The curved part is modeled exactly using conformal segments.
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Top-Loaded Short Monopole

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.
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Monopole Above Earth Ground

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.
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Modeling Radio Masts in AN-SOF.

Radio Mast Above Wire Screen

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.
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Receiving Loop Antenna

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.
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Sequence of images depicting radiation pattern, current distribution, and tuning capacitor values for magnetic loop antenna at 5 resonant frequencies.

Magnetic Loop Antenna

This small transmitting loop antenna is 1 meter high above average ground, so the radiation pattern is not donut-shaped as expected for a small loop in free space. The value of the tuning capacitor is indicated for each resonance frequency.
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Modeling an ISM 433MHz Helical Antenna with AN-SOF.

ISM 433MHz Helical Antenna

Small helical antennas for the 433 MHz ISM band are a good example where we need advanced software that has the ability to model curved wires with exact description of the helix contour.
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