Procomlab
Antenna concepts
An antenna is a transducer, i.e. a ”converter” betweentwo media. The antenna converts electromagnetic energy in a cable into electromagnetic radiated power in free space.
Various characteristics of the antenna determine ”how efficient” this conversion is performed:
- To have as much energy as possible carried on as radiation in the room is of great importance, i.e. the antenna should not be capable of consuming energy itself.
- It is important that the antenna concentrates its radiated energy as efficiently as possible in the required way.
|
|
| Omnidirectional Antenna | Directional Antenna |
If so, either a wide coverage range or a reduced transmitting power can be achieved, until the range is exactly suiting the one required.
Consequently, antenna technology is simply a question of economizing on the energy
The antenna converts electromagnetic energy in a cable into electromagnetic radiated power in free space
