11-1
11 GPS Antenna Feeder System
Installation
Summary:
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Installation preparation for the GPS antenna feeder system
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Structure of the GPS antenna feeder system
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Installation flow of the GPS antenna feeder system
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Installation procedure of the parts of the GPS antenna feeder system
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Waterproof treatment for the connectors
11.1 Preparation for Installing the Antenna Feeder System
As the clock and frequency reference for CDMA, the GPS plays a very important role.
According to the passive distance measurement principles, GPS antenna receives the
navigation positioning signals from the GPS satellites and demodulates frequency and
clock signals through the GPS signal receiver for use by the related units of the CDMA
base station.
Requirements for the installation of the GPS antenna: The installation position of the
GPS antenna should have a broad view so that the GPS antenna can track satellites as
many as possible. Usually, select a safe place on the roof or at the lower part of the
tower and try to make the GPS feeder short to reduce attenuation.
Lightning protection requirement of the GPS antenna: The GPS antenna is usually
installed in the 45° lightning area of the iron tower. Otherwise, the user should make
and install a special lightning arrestor.
Please note that the pole fixing the GPS antenna must be grounded.
11.2 Structure of the Antenna Feeder System
The composition of the GPS antenna feeder system is shown in Fig. 11.2-1.
Summary of Contents for ZXC10 BTSB I1
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