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
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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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File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 20:07, 16 April 2024 | | 724 × 566 (40 KB) | wikimediacommons>Chetvorno | Better diagram from the same source |
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