ZXC10 CBTS I2 Installation Manual
82
Confidential and Proprietary Information of ZTE CORPORATION
Antenna Installation Technical Parameters
Height
It depends upon network planning.
Azimuth
It depends upon network planning.
Tilt
It depends upon network planning and ranges from 0
°
~ 10
°
.
Antenna direction
It depends upon antenna azimuth. Two antennas in same sector should
point to same direction.
Spacing between diversity antennas
Two antennas in same sector act as diversity receiving antennas for
each other, and have same vertical height. Maximum horizontal
distance (d) between antennas satisfies engineering requirements.
Following formula determines value of horizontal distance (d):
d
≥
10
λ
–
20
λ
(or H/d = 11).
Unit of measurement: m
Where:
d is horizontal distance between diversity antennas.
H is vertical height from antenna to ground.
λ
is carrier wavelength.
For example, diversity distance of 1900 MHz carrier must be more than
59.05 inch (1.5 m) while that of 800 MHz carrier must be more than
137.79 inch (3.5 m).
Summary of Contents for ZXC10 CBTS O1
Page 4: ...This page is intentionally blank ...
Page 10: ...This page is intentionally blank ...
Page 162: ......
