File:Omnidirectional antenna - horizontal and vertical radiation patterns.png

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Omnidirectional_antenna_-_horizontal_and_vertical_radiation_patterns.png ‎(724 × 566 pixels, file size: 40 KB, MIME type: image/png)

Summary

Description
English: Diagram showing the horizontal and vertical polar radiation patterns of an omnidirectional antenna. The specific antenna is a half-wave dipole. On each graph the distance from the origin represents power density in watts per square meter in that direction. As shown, an omnidirectional antenna radiates equal radio power in all azimuthal directions perpendicular to the antenna's axis. So the horizontal pattern is just a circle. However the radiated power varies with elevation angle, in this case it is maximum in horizontal directions and decreases monotonically to zero on the axis, as shown by the vertical polar pattern.
Date
Source Retrieved 13 April 2024 from Technical Manual TM 11-666: Antennas and Radio Propagation, 1953, Dept. of the US Army, p.94, fig.90 on https://archive.org/
Author Department of the US Army

Licensing

Public domain
This file is a work of a U.S. Army soldier or employee, taken or made as part of that person's official duties. As a work of the U.S. federal government, it is in the public domain in the United States.

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Captions

Horizontal and vertical polar graphs of radiation pattern of an omnidirectional antenna

Items portrayed in this file

depicts

radiation pattern

inception

1 February 1953

MIME type

image/png

File history

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Date/TimeThumbnailDimensionsUserComment
current20:07, 16 April 2024Thumbnail for version as of 20:07, 16 April 2024724 × 566 (40 KB)ChetvornoBetter diagram from the same source
18:10, 13 April 2024Thumbnail for version as of 18:10, 13 April 2024724 × 598 (47 KB)ChetvornoUploaded a work by Department of the US Army from https://ia803202.us.archive.org/1/items/TM11-666/TM11-666.pdf with UploadWizard
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