File:Ground plane antenna diagram.svg

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Original file (SVG file, nominally 276 × 451 pixels, file size: 12 KB)

Captions

Captions

A drawing of a ground plane antenna

Summary

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Description
English: Diagram of a ground plane antenna, a common omnidirectional monopole antenna used at VHF and UHF frequencies. It consists of a vertical whip antenna one quarter wavelength long, with 3 or 4 quarter wave rods extending from the base electrically connected to the ground side of the transmission line. The ground rods create a ground plane under the antenna which increases the gain. The ground rods may extend horizontally from the base, but in antennas fed by coaxial cable as shown here they are usually sloped downward to increase the radiation resistance of the antenna from the 36 ohms of a quarter wave monopole closer to 50 ohms, so the antenna will be a better impedance match to standard 50 ohm coaxial cable.
Date
Source Own work
Author Chetvorno

Licensing

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I, the copyright holder of this work, hereby publish it under the following license:
Creative Commons CC-Zero 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.

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Date/TimeThumbnailDimensionsUserComment
current21:44, 23 March 2022Thumbnail for version as of 21:44, 23 March 2022276 × 451 (12 KB)Chetvorno (talk | contribs)Added dimensions in wavelengths
06:38, 31 May 2020Thumbnail for version as of 06:38, 31 May 2020276 × 451 (7 KB)Chetvorno (talk | contribs)Uploaded own work with UploadWizard

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