User's Manual

In-Hancer Plus BDA
 USER MANUAL
Off-Air Operation BDA's
Off-Air BDA's are intended to extend coverage into areas with coverage deficiency
such as inside office buildings, shopping malls, hospitals, etc. They are designed to
be located independently of the donor site and must be equipped with their own
antenna systems - one to communicate with the donor site and the other(s) to
communicate with portables in the shadow zone. A typical in-building coverage
extension system is shown below. The "Head-End" BDA is responsible for the
amplification of both incoming “Off-Air” downlink signals and outgoing uplink signals.
The in-building distribution antenna system comprises of Coaxial cable, Signal taps,
splitters and antennas to extend coverage on every floor, basement and
underground parking garage.
ROOF TOP ANTENNA
FROM / TO DONOR
TRANSMITTER
D1 D2
A1
A2
SIGNAL
TAP
SIGNAL
TAP
COAXIAL CABLE
N
N - 1
B
F1
F2
KAVAL
800/900 MHz BDA
This distributed antenna system is based on Kaval Wireless Technologies’ “Tapped
Radiator” RF signal distribution approach. The technology makes use of coaxial
cable with Signal Taps strategically located and connected to Omni-directional
ground plane antennas. This technology offers flexibility in system design,
installation and optimization. Once the RF cable backbone has been installed,
additional signal taps and antennas can quickly and easily be added to a live
system, without the need to take the system out of service. Hence, new coverage
areas can be added, or the system can easily be modified if the layout should
change (e.g. modernization retrofits or process modifications).
Printed: 03.10.14,09:37
Revision Date:10/14/03
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