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A Radiation Pattern is a 3 dimensional description of how an antenna radiates power in the surrounding space. This pattern is usually measured at a sufficient distance from the antenna known as the far-field. In simple words it is the power radiated in a certain direction with reference to an omni-directional antenna (a theoretical antenna that radiates equally in all the directions). Given below are the radiation patterns for some common antenna types.
Although the Radiation Pattern is a 3 dimensional quantity it is usually sufficient to describe it in two orthogonal planes (one horizontal and one vertical) as shown in the figures above.
References:
[1] Cisco Aironet Antennas and Accessories: Antenna Patterns and Their Meaning
More than 20 years of experience in various organizations in Pakistan, the USA, and Europe. Worked with the Mobile and Portable Radio Group (MPRG) of Virginia Tech and Qualcomm USA and was one of the first researchers to propose Space Time Block Codes for eight transmit antennas. Have publsihed a book “Recipes for Communication and Signal Processing” through Springer Nature.
5 thoughts on “Some Common Antenna Radiation Patterns”
Where (which direction from antenna) on a monopole antenna has the strongest signal/power transmission? Thank you
The vertical monopole is an omnidirectional antenna with a low gain of 2 – 5 dBi, and radiates most of its power in horizontal directions or low elevation angles.
Still very useful 12 year later. There’s too few visualizations for this stuff, yours are excellent. Thank you.
nice clean 3d plots . . MATLAB ? ? what toolbox ?
This is not MATLAB…its CST Microwave Studio.