User's Manual

User Manual
Rosenberger Active Das With Intelligent Antenna system
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2.2 Main Features
 Complete Frequency Range
Rosenberger RADIANT system can cover full band GSM&DCS&WCDAM&LTE frequency band.
 Sleek, Efficient, Compact Design
The IRU-O provides an innovative design to integrate both a low power remote unit and antenna
into a single package. The IRU-O can provide up to 28.5dBm EIRP for omni applications and up to
31dBm for panel applications to ensure coverage and maximum throughput for multiple LTE and
WCDMA carriers. The unit weighs less than 3kg and consumes less than 20W DC power, suitable
for hybrid DC/fiber applications
 Precise RF tuning and coverage
Due to the inherent distributed design, each IRU-O can be individually fine-tuned for gain
adjustment in each zone to provide precise coverage. The gain adjustment can be fine tuned to a
resolution within 0.25dB within each band. Traditional high power remote units with passive
distribution are unable to achieve this level of precision and control per antenna as any change in
gain in the remote unit affects an entire group of antennas
 No additional feeder losses
Traditional remote units do not have an antenna, so an external feeder cable is required to connect
with the servicing antenna. This results in less RF power due to the inherent loss of the feeder
cable. The IRU-O antenna mates directly with the active portion and guarantees full RF power at
the antenna interface. This allows the maximum available RF power for any application.
 PIM-Free, VSWR free Installation
The IRU-O assembly is factory tested for PIM and VSWR. This eliminates the possibility of facing
PIM or Return Loss issues related to mismatched components and poor installation practices. This
significantly improves installation and commissioning time.
 Low Noise Figure and Low System Noise Rise
The IRU-O features a lower noise figure than traditional remote units, that combined with the
distributed active architecture provides a significant improvement in DAS noise rise and SNR
compared with high power traditional solutions with passive distribution. The combination of which
can improve KPI’s and throughput.
 Fault Tolerance
The active distribution architecture of RADiAnt provides fault tolerance. In the event that one
remote unit fails, only a single antenna/coverage area is affected. In a traditional solution with high
power DAS and passive distribution, if the remote unit fails, an entire group of antennas is down
affecting the service in a much larger area.
 Easy Installation and Low Project Cost
Radiant is much more than replacing coax with fiber, the core network (IM2U and NEU) will only
deal with the signal processing and covert RF signals to fiber signals and transmit over fiber with
very small loss and no increased noises, and the network extender unit (NEU) only use hybrid cable
(integrated cable with power and fiber) to connect IRU-O, each NEU can connect 16 pieces IRU-O,
it means that save project time and cost.