ZyXEL Communications G-102 Uživatelská příručka stáhnout pdf (Strana 188)

ZyXEL G-1000 v2 User’s Guide

188

Types of Antennas For WLAN

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.

Positioning Antennas

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.

Connector Type

The G-1000 v2 is equipped with a reverse polarity SMA jack, so it will work with any 2.4GHz

wireless antenna with a reverse polarity SMA plug.

1 2 ... 183 184 185 186 187 188 189 190 191 192 193 ... 197 198

Žádné komentáře

ZyXEL Communications G-102 Uživatelská příručka Strana 188