CTP Systems CTPhone 1900, Руководство по применению

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DOC00101-01 2-17
CTPhone 1900 System Planning
Base Station Radiation Pattern (Ceiling Mounting)
When the base station is mounted horizontally on the ceiling with the
antennas extended at a 90° angle, it radiates in a true omnidirectional pat-
tern or circle. Ceiling mounting is best for optimum performance (Figure 2-
16).
Figure 2-16. Base Station Ceiling Mounting Radiation Pattern
Base Station Elevation Angle
The vertical height the base station radiates is determined by the materials
used for floor and ceiling, but can be represented by oval shaped lobes.
Note The total vertical height of approximately 260 feet (open space only
with not obstructions;Figure 2-17).
Figure 2-17. Base Station Elevation Angle: Wall & Ceiling Mounting
Base Station
200 meter circle
200 meter circle
Radiation Pattern
Side View
650 feet
(approximately 200 meters)
260 feet
(80 meters)