High-Gain Omni Antennas
The antenna shown in Figure
B-8 is a high-gain 12-dBi omni antenna from Mobile Mark Antennas. It is
designed with no down tilt for use in long-range communication between sites
with similar elevations. If the gain is very high, the antenna has a very narrow
vertical beam width resulting in poor performance for indoor applications or
those installations where there is a height disparity. An example would be an
antenna located on top of a high building, which is intended to provide "local"
coverage on the ground.
Table B-6 lists the
specification for a typical 12-dBi omni antenna. Note the very narrow vertical
beam width.
Table B-6. 12-dBi Omni Specifications
|
Parameter |
Specification |
|
Frequency range |
2.42.83 GHz |
|
VSWR |
2:1 nominal |
|
Gain |
12 dBi |
|
Polarization |
Vertical |
|
Azimuth (3-dB BW) |
Omnidirectional 360 degrees |
|
Elevation (3-dB BW) |
7 degrees |
|
Dimensions |
40" * 1.25" |
|
Wind rating |
100 mph |
Sections
