Transmission medium

From Academic Kids

A transmission medium is any material substance, such as fiber-optic cable, twisted-wire pair, coaxial cable, dielectric-slab waveguide, water, and air, that can be used for the propagation of signals, usually in the form of modulated radio, light, or acoustic waves, from one point to another.

Note: By extension, free space can also be considered a transmission medium for electromagnetic waves, although it is not a material medium.

Source: From Federal Standard 1037C

Transmission mediums can be clasified in two kinds, guided (or bounded) medium in which waves are guided along solid medium, and wireless (or unguided) medium in wich transmissions and receptions are achieved by means of an antenna.

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