Difference between revisions of "B4-Attenuation and Scattering"
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| + | ==⌘ Interaction of electromagnetic waves with the Environment== | ||
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| + | [[File:InteractionNatural.png|550px]] | ||
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| + | Interaction with a natural target, here: a tree. The tree will interact with the electromagnetic wave both when it comes to thickness of objects and dimension of objects. Thickness typically influences attenuation, while the dimension of the object contributes to the reflection. | ||
| + | |} | ||
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| + | Examples are: | ||
| + | * leaves will mainly interact around 6 Unik/GHz: thickness will attenuate, whereas reflection is due to diameter of leaves | ||
| + | * branches will have main interaction at about 1 Unik/GHz | ||
| + | * the tree trunk will interact with almost all frequencies at 30 Unik/MHz and above. | ||
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==⌘ Attenuation in walls == | ==⌘ Attenuation in walls == | ||
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Revision as of 20:54, 20 September 2014
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⌘ Interaction of electromagnetic waves with the Environment
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Interaction with a natural target, here: a tree. The tree will interact with the electromagnetic wave both when it comes to thickness of objects and dimension of objects. Thickness typically influences attenuation, while the dimension of the object contributes to the reflection. |
Examples are:
- leaves will mainly interact around 6 Unik/GHz: thickness will attenuate, whereas reflection is due to diameter of leaves
- branches will have main interaction at about 1 Unik/GHz
- the tree trunk will interact with almost all frequencies at 30 Unik/MHz and above.
⌘ Attenuation in walls
| Attenuation in material follows typical an exponential behaviour. | 
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