AE030063-A /October 17 2003
Dual band WLAN antenna
5 (5)
Subject to changes without prior notice
Application example
1.
Location of antenna
The antenna shall preferably be placed at the edges of the notebook; sides or top of the lid as well as sides and back
of the keyboard would be good locations. Placing the antenna at the bottom of the notebook will cut price for cables
(shorter cables) and decrease loss (since the signal will not need to travel long distances in cable). The drawback of
placing the antenna in the keyboard area is interference from hands and body.
2.
Ground plane
The antenna is dependent on ground plane area to complete the antenna function. The antenna performance is also
dependent on the size and location of the ground plane. Part of the antenna have to be connected to ground, while
part of the antenna need to have ground free space underneath. For more details, plese contact gigaAnt.
3.
Placement of radio module
To avoid losses the module shall be placed as close to the antenna as possible.
4.
Clearance area
Avoid metal components and parts close to the antenna. Avoid placing the antenna on the inside of notebook metal
chassis.
5.
Diversity and isolation
The antenna should be arranged to maximise the diversity effect. This could be achieved by separating the antennas
as far as possible and place them perpendicular to each other. Isolation is also improved by placing antennas further a
part. To ensure good isolation, please contact gigaAnt for assistance.
6.
Casing material
Do not place metal casing in immediate proximity of the antenna, and do not use plastics with metal flakes. Metal
based paint or laquer should also be avoided.
Note ! Incorrect implementation of the antenna will affect the performance.
Contact gigaAnt for implementation services.
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