The UBS L-band radial power combiners present a unique blend of reliability and high power handling capability in a compact housing. Radial combiners, by their nature, tend to be very efficient for summing a large number of amplifiers. The analysis technique employed at UBS allows for very accurate prediction and careful optimization of combiner performance.  A superior mechanical design provides an excellent electrical symmetry thus improving their amplitude and phase stability. All this ensures that UBS’ radial combiners have low insertion loss, excellent amplitude and phase balance over a wide frequency range, as well as graceful degradation characteristics.

Features

·  2, 4, 6 or 8 collecting (input) ports; other combining orders are possible
·  0.5 kW input power;
·  Connectors 1-5/8 '' or 7/8 '' at the common port, 7/16 '' or N-type connectors at the collecting ports
· 19'' rack mountable, easy installation
·  Designed to cover T-DAB and S-DAB bands
·  Custom designs can be developed to meet specific electrical and mechanical requirements

Representative results for a 6-way L-band radial combiner are given below.
L-BAND 6 WAY RADIAL COMBINER
Specifications
Frequency range 1250 MHz - 1650 MHz
Maximum power at the input port 0.5 kW
Insertion loss of a combiner 0.75 dB
Return loss at the common port min. 20 dB , 22 dB typical
Isolation between input ports min. 13.5 dB
Amplitude unbalance worst case ± 0.75 dB
Phase unbalance worst case ± 1.5 o
Size Diameter of the base 6'' , height 3.5''
Weight 3 kg
Interface:
Common port
Collecting ports
Connector 1-5/8 ''
Connector 7/16 ''
*Specifications are subject to change without notice
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Isolation and Return Loss
Amplitude Unbalance
Phase Unbalance
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