It can be seen from the above plot that radiation pattern consists of a beam like pattern. Script and its output is given below:įig-2: 3-D Radiation pattern plot from octave script Let’s plot radiation pattern of an antenna using a simple octave script. GNU Octave Script to Generate Antenna Radiation Pattern: This plot or function defines the variation of power radiated by an antenna in the direction away from the antenna. Radiation patterns define the directional property of the antenna and are usually represented in form of function or plot. Far field region: This region is far beyond the radiating near filed and radiation pattern does not change with distance.It is in between Reactive near field and far field. Here radiation pattern changes with distance. Radiating near field region: This is the region where antenna filed radiates.Reactive near field region: This is the region where reactive energy lies surrounding the antenna.
Antenna region: This is physical boundary of antenna.This article talks about basics of antenna radiation patterns, beamforming and smart antenna adaptive beamforming concepts.īefore going into details lets agree on some definitions.Įlectromagnetic field that is produced by antenna can be broadly divided into four regions. This technology becomes even more useful in dense urban environment. Main advantage of beamforming and smart antenna system is that by using focused beam, interference can be reduced and wanted signal can be effectively steered towards specific user. LTE transmission mode 7,8 and 9 defines fixed precoder based beamforming and adaptive precoder based beamforming.
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