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8.2.2 Technical Parameters
1.
2.
3.
4.
5.
8.3 Installation Flow
The antenna installation flow is as shown in Fig. 8.3-1.
Height of antenna
It depends on the networking plan.
Azimuth angle of antenna
It depends on the networking plan.
Pitch angle of antenna
It depends on the networking plan. Generally, it is between 0° and 10°
(adjustable).
Pointing direction of antenna
It depends on the azimuth angle of the antenna. Two antennae of the same sector
must point to the same direction.
Distance between two diversity antennae
Two antennae of one sector are diversity reception antennae to each other. They
have the same height, but they should be distanced as much as possible. If the
following formula is met, the installation requirement is met.
d ≥ 10λ~20λ (or H/d=11)d: Distance between two diversity antennae; H: Height
from the antenna to the ground. If the carrier is 1.9GHz, the diversity distance
should be more than 1.5m. If the carrier is 800MHz, the diversity distance
should be more than 3.5m.
Chapter 8 Installation of Primary Antenna Feeder System
8-5
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