Wireless antenna types and signal strength

There are three main antenna types:

Figure 29
  • Omnidirectional: Omnidirectional antennas provide the most coverage as they transmit over 360 degrees.
  • Directional: Directional antennas transmit only in one direction, therefore if the antenna is pointing in the wrong direction, there will be no connection to the wireless network.
  • Yagi: Yagi fin is an antenna that can transmit in two directions, therefore it is suitable to be placed between two buildings. A way to remember this for the exam is, Yogi Bear is between two buildings looking for food.

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