Omnidirectional antenna

From Wikipedia, the free encyclopedia

You have new messages (last change).

An omnidirectional antenna is an antenna system which radiates power uniformly in one plane with a directive pattern shape in a perpendicular plane.

The only 3 dimensional omnidirectional antenna is the isotropic antenna, a theoretical construct derived from actual antenna radiation patterns and used as a reference for specifying antenna gain and radio system effective radiated power.

Practical antennas approach omnidirectionality by providing uniform radiation or response only in one reference plane, usually the horizontal one parallel to the earth's surface.

Common low gain omnidirectional antennas are the whip antenna, a vertically orientated dipole antenna, the discone antenna, and the horizontal loop (or halo) antenna.

Higher gain omnidirectional antennas are the Coaxial Colinear (COCO) antenna[1] and Omnidirectional Microstrip Antenna (OMA)[2].

References:

[1] Judasz, T. and Balsley, B., "Improved Theoretical and Experimental Models for the Coaxial Colinear Antenna," IEEE Transactions on Antennas and Propagation, Vol. 37 No. 3, March 1989, pp. 289-296

[2] Bancroft R, "Design Parameters of an Omnidirectional Planar Microstrip Antenna," Microwave and Optical Technology Letters, Vol 47. No. 5 December 5, 2005 pp. 414-418.

This article related to telecommunications is a stub. You can help Wikipedia by expanding it.
Retrieved from "http://en.wikipedia.org../../../o/m/n/Omnidirectional_antenna.html"
In other languages