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Antenna Radiation Patterns

Overall Information

So called antenna patterns represent changing the intensity of electromagnetic radiation. When the antenna works as the receiver, radiation patterns show changing in the voltage on the antenna connector. Both patterns have the same shape for receiving and transmitting.

Radiation characteristics can be calculate by checking a voltage on the output of the test antenna (the test receiver) while it is moving along principal planes H and V (the gain vs. azimuth or the gain vs. elevation).

In most cases patterns for Elboxrf antennas are calculated for the main polarizations planes and for various frequencies: the lowest, the middle and the highest of operational frequency. For example, the TetraAnt 5 60 18 XHV have the frequency range 5.1 to 6.1 GHz, so patterns are for 5.1 GHz, 5.5 GHz and 6.1 GHz. They are represent the whole operating band.

Patterns are based on a rav data available as the results of the electromagnetic simulation in the thee dimensional - 3D - environment (we are talking about the numerical environment in the computer program).

Data are accurate as the simulation is - we can also to model various structures like a mounting mast or the antenna close-in wall structure, but the standard for visualization antenna patterns is to model antenna in an empty environment without scattering structures.