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DAB Multiblock Transmitters
Itelco international patent 99830765.6-2216
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Itelco proudly presents its line of advanced
solid state DAB Multiblock transmitters. The state-of-the-art of these
transmitters is guaranteed by Itelco�s vast
experience in RF systems, know-how in implementation
of sophisticated technologies, and expertise
in digital signal processing, which ensures
a competitive edge to our customers.
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Itelco offers
a Multi-Block Transmitter Configuration which
allows integrating up to 4 DAB Exciters in
a single transmitter. This enables any Itelco
DAB transmitter to broadcast up to 24 digital
radio programs, in 4 channel with 1 transmitter.
Consequently you need fewer transmitters and,
since the signal combined is at IF level,
only one RF combiner, thus minimizing filter
losses. Moreover you can achieve significant
space saving within the transmitter station,
and you can reduce the number of necessary
spare parts. Itelco�s solid state DAB transmitters
generate a COFDM RF signal of highest quality
due to superior COFDM modulation, digital
precorrection and linear RF amplification.
The development of both the digital processing
and RF stages by Itelco guarantees an exemplary
integration of digital and analog technologies
not available from manufacturers who utilize
outside vendors for major system components.
Itelco�s innovative digital precorrector ensures
minimal adjacent channel emissions, optimal
signal linearity of the transmitter RF output
and maximized amplifier efficiency. The Automatic
Gain Control circuits in the PAs and the Automatic
Level Control circuit in the exciter guarantee
output power stability.
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Main Features
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- Itelco
international patent 99830765.6-2216
- Up
to 4 DAB channels transmitted with
a single transmitter
- No
High Power RF Combiner needed
- 8 MHz
digital controlled precorrector
to compensate HPA distortions
- Solid
State Technology
- Air/Liquid
Cooling
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DAB MULTIBLOCK
Functional Block Diagram
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OUTPUT SPECTRUM
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INTERBLOCK IMD.
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ADVANTAGES
- No output
combiner filter loss (@
0,8 dB �)
- High efficiency
- Space saving
within the transmitter station thanks
to the very compact construction: four
1,5kW DAB blocks in 1,32m�
- Money saving
�(Finland,
Sweden).
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Key Features/Benefits |
- Clear, modular design
- High-performance DAB Exciter with integrated
COFDM Modulator
- Fully compliant with ETSI
ETS 300 401 edition 2, supporting all operation modes
- DAB band III and L-band
transmitter models
- Easy reprogrammable devices
- Effective self diagnostic
capability (on-line and off-line)
- Digital precorrector minimizes adjacent channel
emissions and provides optimal signal linearity
- Standard remote control and monitoring interface
- Exemplary integration
of digital and analogue technologies
- Broadband RF power amplifier modules with
Tetrafet for VHF band or with LDMOS devices in L-band.
- Input for external frequency synchronisation
(GPS) or internal GPS receiver (plug-in option)
- Designed for straightforward operation and
maintenance
- Multi-Block configuration
for broadcasting of up to 24 digital radio programs on 4
channels with 1 Tx
- N+1 reserve system optionally available
- Exciter in passive standby (optional)
- Compact dimensions
- Designed and manufactured under ISO 9001 certified
Quality Management System
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