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How do you analyze antenna radiation pattern?
Radiation Pattern
- The field patterns are plotted as a function of electric and magnetic fields. They are plotted on logarithmic scale.
- The power patterns are plotted as a function of square of the magnitude of electric and magnetic fields. They are plotted on logarithmic or commonly on dB scale.
What is meant by antenna radiation pattern?
In the field of antenna design the term radiation pattern (or antenna pattern or far-field pattern) refers to the directional (angular) dependence of the strength of the radio waves from the antenna or other source. Other software, like HFSS can also compute the near field.
How many types of antennas are there?
There are several different types of antennas in three broad categories: omni-directional, directional, and semi-directional. – Omni-directional antennas propagate in all directions. – Semi-directional antennas propagate in a constricted fashion, defined by a specific angle.
How to calculate the radiation pattern of an antenna?
Antenna Theory – Radiation Pattern 1 Graphically, radiation can be plotted as a function of angular position and radial distance from the antenna. 2 This is a mathematical function of radiation properties of the antenna represented as a function of spherical… More
What does the antenna pattern on a radar mean?
The antenna pattern is usually a graphical representation of the antenna’s directional characteristic. It represents the relative intensity of the energy radiation or the amount of the electric or magnetic field strength as a function of the direction to the antenna.
How is the elevation pattern plotted on an antenna?
The elevation pattern plot (figure 2) represents if you are looking at the antenna from the side. Figure 4 is the 3D plot to show how the elevation diagram correlates to the polar diagram. Since it can be hard to see the gain drops near the elevation angle of 90 degrees, this plot is in wireframe.
How is the gain of an antenna determined?
Based on both the azimuth and elevation polar plots, a customer can determine where the antenna gets the best gain and select the most suitable antenna for their project. The example above shows an omnidirectional antenna with gain that is rather even at all azimuth angles.