DIGIMINI EMEA/APAC/AUSTRALIA REPEATERS
PRODUCT DESCRIPTION AND USER’S MANUAL
www.cobham.com/wireless
Page |
2-2
Date: 11-Oct-15
Rev. 5.0
Cobham Wireless –
Coverage
Document number: 00030UMCD
2.2 Service Antenna Requirements
The Service antenna is installed indoors, where the type of antenna depends on the application.
2.2.1 Required Antenna Information
The following antenna requirements, specifications and site considerations should be met.
•
Service area type and size
•
Antenna type and characteristics
•
Height
•
Length and type of coaxial cable required for connecting the antenna to the Repeater and the
attenuation.
2.2.2 Recommended Antennas
The following describes the requirements for an omni-directional mobile used for indoor applications.
Specifications:
•
One or a combination of the following antennas can be used: Ceiling Mount Patch antenna, Wall
Mount Patch antenna, Corner Reflector.
•
Omni directional antenna with a 0 to 2 dBi typical gain, or wide beam with up to 10 dBi gain.
•
Example of omni-directional antenna specifications:
Gain:
0 to 2 dBi
VSWR:
< 2:1
Impedance: 50 ohm
•
Choose an antenna with high side lobe attenuation which enables maximum isolation from the
service/ mobile antenna.
2.2.3 Service Antenna Installation Criteria
Determine the antenna installation configuration, according to the transmission requirements and the
installation site conditions.
Installation requirements:
•
An indoor antenna should be installed at a convenient location. It should be free of metallic
obstruction.
•
Install the Service Antenna at the designated height and tune it roughly toward the Service
coverage area.
•
Installation of this antenna must provide a minimum separation distance of 20cm from any
personnel within the area.
