File:Dipole_receiving_antenna_animation_6_800x394x150ms.gif
From Wikipedia, the free encyclopedia
Dipole_receiving_antenna_animation_6_800x394x150ms.gif (800 × 394 pixels, file size: 271 KB, MIME type: image/gif, looped, 16 frames, 2.4 s)
This is a file from the Wikimedia Commons. Information from its description page there is shown below. Commons is a freely licensed media file repository. You can help. |
Summary
DescriptionDipole receiving antenna animation 6 800x394x150ms.gif |
English: Animation showing a half-wave dipole antenna receiving power from a radio wave. The antenna consists of two metal rods each one-quarter of the wavelength long, attached through a parallel transmission line to a resistance R equal to the characteristic impedance of the antenna, representing the receiver. The electromagnetic wave is represented by its electric field (E, green arrows) (it should be kept in mind that the drawing only shows the field along one line, while the radio wave is actually a plane wave and the electric field is actually the same at every point on a plane perpendicular to the direction of motion). The wave's magnetic field is not shown. The oscillating electric field exerts force on the electrons in the antenna rods , causing them to move back and forth in currents (black arrows) between the ends of the antenna rods, charging the ends of the antenna alternately positive (+) and negative (−). Since the antenna is a half-wavelength long at the radio wave's frequency, it excites standing waves of voltage (V, red) and current in the antenna. The voltage along the antenna elements is represented graphically by a band of red whose thickness at any point is proportional to the magnitude of the voltage. The oscillating currents flowing back and forth from one antenna element to the other, pass down the transmission line and through the radio receiver, represented by R. In this animation the action is shown slowed down drastically; the radio waves received by dipoles actually oscillate back and forth at tens of thousands to billions of cycles per second. |
Date | |
Source | Own work |
Author | Chetvorno |
Other versions |
Dipole receiving antenna animation 2 800x403x15ms.gif - more wide view |
This circuit image could be re-created using vector graphics as an SVG file. This has several advantages; see Commons:Media for cleanup for more information. If an SVG form of this image is available, please upload it and afterwards replace this template with
{{vector version available|new image name}} .
It is recommended to name the SVG file "Dipole receiving antenna animation 6 800x394x150ms.svg" - then the template Vector version available (or Vva) does not need the new image name parameter. |
Licensing
I, the copyright holder of this work, hereby publish it under the following license:
This file is made available under the Creative Commons CC0 1.0 Universal Public Domain Dedication. | |
The person who associated a work with this deed has dedicated the work to the public domain by waiving all of their rights to the work worldwide under copyright law, including all related and neighboring rights, to the extent allowed by law. You can copy, modify, distribute and perform the work, even for commercial purposes, all without asking permission.
http://creativecommons.org/publicdomain/zero/1.0/deed.enCC0Creative Commons Zero, Public Domain Dedicationfalsefalse |
Items portrayed in this file
depicts
7 June 2015
File history
Click on a date/time to view the file as it appeared at that time.
Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 07:47, 7 June 2015 | 800 × 394 (271 KB) | Chetvorno | User created page with UploadWizard |
File usage
The following pages on the English Wikipedia use this file (pages on other projects are not listed):
Global file usage
The following other wikis use this file:
- Usage on ast.wikipedia.org
- Usage on bg.wikipedia.org
- Usage on bn.wikipedia.org
- Usage on ca.wikipedia.org
- Usage on da.wikipedia.org
- Usage on de.wikipedia.org
- Usage on eo.wikipedia.org
- Usage on es.wikipedia.org
- Usage on eu.wikipedia.org
- Usage on fa.wikipedia.org
- Usage on fi.wikipedia.org
- Usage on fr.wikipedia.org
- Usage on fr.wiktionary.org
- Usage on hr.wikipedia.org
- Usage on it.wikipedia.org
- Usage on ja.wikipedia.org
- Usage on ku.wikipedia.org
- Usage on mk.wikipedia.org
- Usage on nl.wikipedia.org
- Usage on no.wikipedia.org
- Usage on pt.wikipedia.org
- Usage on ro.wikipedia.org
- Usage on ru.wikipedia.org
- Usage on sh.wikipedia.org
- Usage on sr.wikipedia.org
- Usage on th.wikipedia.org
- Usage on tl.wikipedia.org
- Usage on uk.wikipedia.org
- Usage on zh.wikipedia.org
View more global usage of this file.
Metadata
This file contains additional information, probably added from the digital camera or scanner used to create or digitize it.
If the file has been modified from its original state, some details may not fully reflect the modified file.
GIF file comment | PhotoScape |
---|