Antennas used in WLANs
Omni directional antennas
- Transmit in all directions simultaneously
- Used on most WLANs
- Dipole antenna (rubber duck)
- Transmits in all direction (vertical, horizontal, up, down)
Directional antennas
- Project signal only in one direction
- Focused area; stronger signal; farther ranges
- Most often used on inside of an exterior wall
- To reduce the security issue
- A potential problem with WLANs