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ANNEX A.
A.1 Cautions when Installing a Sector Antenna
Precautions of antenna installation are as follows.
Sector antennas should be installed vertically. (± 1°)
Antenna is the precise material, so be careful not to make damage or form change.
When moving antenna, use the tool suitable to rating. In addition, use the rated
carrying device which is at least 200 % or more than antenna considering the stability.
Be careful not to give too much strength to the antenna.
If it rains, suspend connecting the feeder cable and antenna.
Fix it after adjusting the direction of antenna exactly.
Distance between steel tower and antenna and the distance between send-receive
antennas are based on the antenna layout.
Attach the antenna on the position specified in the drawing.
Install the antenna not to make a feature change of the antenna considering the
direction of the radiation
Connect the antenna not making the alien substance flowed so that Passive Inter-
Modulation Distortion (PMID) is not affected.
Measure VSWR of all antennas and the value should be within the regulated value.
A.2 Sector Antenna Layout
The method of sector antenna layout is as follows.
1) Use the transit to adjust the antenna installation direction exactly.
2) Fix the direction of the sector antenna, same as the angle settled when designing the
cell after installing the steel tower.
3) Arrange the antennas of each sector to the sector directional angle at right angles by
adjusting the distance between antenna and steel tower.
In the event of the station whose the direction between sectors is not 120°, install it to
make the steel tower and antenna direction different being careful of the tilt and azimuth.
4) For circular platform, separate the antenna interval at maximum.
© SAMSUNG Electronics Co., Ltd.
Sector Antenna Installation
Mobile WiMAX/TD-LTE RRH-2WB Installation Manual
A-1
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