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Original file (SVG file, nominally 713 × 436 pixels, file size: 32 KB)
Summary
| Description |
English: Diagram of a thought experiment used to derive the effective aperture of a isotropic antenna, used to derive the expression for antenna gain. It consists of an ideal lossless isotropic antenna A in a thermal cavity at temperature T, connected through a lossless transmission line and a narrowband filter F to a resistor R in another cavity. Both cavities are at the same temperature and so are in thermodynamic equilibrium |
| Date | |
| Source | Own work |
| Author | Chetvorno |
Licensing
I, the copyright holder of this work, hereby publish it under the following license:
 
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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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File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 00:48, 23 August 2018 | | 713 × 436 (32 KB) | Chetvorno | Minor alterations to diagram: changed font to Times New Roman to more clearly distinguish Greek and Roman characters, altered red arrows indicating equilibrium between antenna, resistor and cavities |
| 22:47, 21 August 2018 |  | 727 × 446 (25 KB) | Chetvorno | User created page with UploadWizard |
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