 # What Information Is Available From A Radiation Pattern?

## What are the two types of radiation pattern?

Radiation Pattern in 2D Two-dimensional pattern can be obtained from three-dimensional pattern by dividing it into horizontal and vertical planes.

These resultant patterns are known as Horizontal pattern and Vertical pattern respectively..

## What is E plane radiation pattern?

The electric field or “E” plane determines the polarization or orientation of the radio wave. … For a vertically polarized antenna, the E-plane usually coincides with the vertical/elevation plane. For a horizontally polarized antenna, the E-Plane usually coincides with the horizontal/azimuth plane.

## What is omnidirectional radiation pattern?

In radio communication, an omnidirectional antenna is a class of antenna which radiates equal radio power in all directions perpendicular to an axis (azimuthal directions), with power varying with angle to the axis (elevation angle), declining to zero on the axis.

## How do you find the directivity of a radiation pattern?

Directivity is the ratio of the radiation intensity in a given direction from the antenna to the radiation intensity averaged over all directions (IEEE 1993, p. 362). Notes: (1) The average radiation intensity is equal to the total power radiated by the antenna divided by 4p (area of sphere in steradians).

## How do you find the beamwidth of an antenna from radiation pattern?

The Half Power Beamwidth (HPBW) is the angular separation in which the magnitude of the radiation pattern decrease by 50% (or -3 dB) from the peak of the main beam. From Figure 2, the pattern decreases to -3 dB at 77.7 and 102.3 degrees. Hence the HPBW is 102.3-77.7 = 24.6 degrees.

## What is radiation pattern of an antenna?

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 do the radiation patterns of antennas vary with the length of the antenna?

The radiation pattern changes with the length of the antenna. As the length increases in proportion to a wavelength, the number of major lobes or points of maximum radiation increases, and they move outwards aligning further with the axis of the antenna..

## How do you find the radiation pattern in HFSS?

1) Firstly, setup for Radiation sphere: … In group of Phi: start = 0 degree. … In group of Theta: start = 0 degree. … 2) Create​ report:HFSS-> Results -> create far field report -> Radiation pattern :by this method you will get Both E-plane and H-plane in one plot.