Some Common Antenna Radiation Patterns

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.

Dipole Antenna 3D Radiation Pattern
Dipole Antenna 3D Radiation Pattern
Patch Antenna 3D Radiation Pattern
Patch Antenna 3D Radiation Pattern
4x4 Patch Array 3D Radiation Pattern
4x4 Patch Array 3D Radiation Pattern
GSM Band Antenna Radiation Patterns from a Cell Phone
GSM Band Antenna Radiation Patterns from a Cell Phone
GSM Band Antenna Radiation Pattern from a Cell Phone in Presence of Head and Hand
GSM Band Antenna Radiation Pattern from a Cell Phone in Presence of Head and Hand
Horn Antenna Radiation Pattern
Horn Antenna Radiation Pattern
Yagi Antenna 3D Radiation Pattern
Yagi Antenna 3D Radiation Pattern
Sector Antenna 3D Radiation Pattern
Sector Antenna 3D Radiation Pattern
Radar Antenna Radiation Patterns
Radar Antenna Radiation Patterns

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

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