4RF Limited SRN0400025A ユーザーズマニュアル
48 | Preparation
Aprisa SR User Manual
Corner Reflector Antennas
Factor
Explanation
Frequency
Often used in 330-960 MHz bands
Gain
Typically 12 dBi
Size
Range from 0.36 m to 0.75 m in length
Front to back ratio
High (typically 30 dB)
Beamwidth
Broad (up to 60°)
Antenna Siting
When siting antennas, consider the following points:
A site with a clear line of sight to the remote radio is recommended. Pay particular attention to trees,
buildings, and other obstructions close to the antenna site.
buildings, and other obstructions close to the antenna site.
Example of a clear line-of-sight path
Any large flat areas that reflect RF energy along the link path, for instance, water, could cause multipath
fading. If the link path crosses a feature that is likely to cause RF reflections, shield the antenna from the
reflected signals by positioning it on the far side of the roof of the equipment shelter or other structure.
fading. If the link path crosses a feature that is likely to cause RF reflections, shield the antenna from the
reflected signals by positioning it on the far side of the roof of the equipment shelter or other structure.
Example of a mid-path reflection path
The antenna site should be as far as possible from other potential sources of RF interference such as
electrical equipment, power lines and roads. The antenna site should be as close as possible to the
equipment shelter.
electrical equipment, power lines and roads. The antenna site should be as close as possible to the
equipment shelter.
Wide angle and zoom photographs taken at the proposed antenna location (looking down the proposed
path), can be useful when considering the best mounting positions.
path), can be useful when considering the best mounting positions.