ZyXEL g-2000 plusv2 Guia Do Utilizador

ZyXEL G-2000 Plus v2 User’s Guide

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There are two types of antennas used for wireless LAN applications.

• Omni-directional antennas send the RF signal out in all directions on a horizontal plane. 

The coverage area is torus-shaped (like a donut) which makes these antennas ideal for a 
room environment. With a wide coverage area, it is possible to make circular overlapping 
coverage areas with multiple access points. 

• Directional antennas concentrate the RF signal in a beam, like a flashlight. The angle of 

the beam width determines the direction of the coverage pattern; typically ranges from 20 
degrees (less directional) to 90 degrees (very directional). The directional antennas are 
ideal for hallways and outdoor point-to-point applications.

In general, antennas should be mounted as high as practically possible and free of 
obstructions. In point-to –point application, position both transmitting and receiving antenna 
at the same height and in a direct line of sight to each other to attend the best performance. 

For omni-directional antennas mounted on a table, desk, and so on, point the antenna up. For 
omni-directional antennas mounted on a wall or ceiling, point the antenna down. For a single 
AP application, place omni-directional antennas as close to the center of the coverage area as 
possible.

For directional antennas, point the antenna in the direction of the desired coverage area.

The ZyXEL device is equipped with a reverse polarity SMA jack, so it will work with any 
2.4GHz wireless antenna with a reverse polarity SMA plug.