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Directional Couplers

The Directional Couplers belong to a family of products designed to allow the mechanical and electrical connection to the same antenna of two radio equipment in configuration 1+1 hot stand-by for improved link availability.

The interfaces to the radios and the coupling levels of the built-in directional couplers can be customized on request.

The table below shows a list of the frequency bands and the coupling levels presently available.



ELECTRICAL CHARACTERISTICS DIRECTIONAL COUPLERS

Model

Frequency range
 (GHz)

Coupling
 (dB)

Directivity
(Isolation)
(>dB)

Return loss
Main line
(>dB)

Return loss
coupled line
(>dB)

Insertion loss
(=dB)

Flange type
unbalanced 5.925-7.125 10±1 18 (28) 20 20 0.8 * UDR 70
balanced 5.925-7.125 3±0.3 18 (21) 20 20 0.3 UDR 70
unbalanced 7.125-8.5 10±1 18 (28) 20 20 0.9 * UBR 84
balanced 7.125-8.5 3±0.3 18 (21) 20 20 0.3 UBR 84
unbalanced 10-11.7 10±1 18 (28) 20 20 0.9 * UBR 100
balanced 10-11.7 3±0.3 18 (21) 20 20 0.3 UBR 100
unbalanced 12.7-13.25 10±1 18 (28) 20 20 1 * UBR 120
balanced 12.7-13.25 3±0.3 18 (21) 20 20 0.3 UBR 120
unbalanced 14.4-15.35 10±1 18 (28) 18 18 1.1 * UBR 140
balanced 14.4-15.35 3±0.3 18 (21) 18 18 0.3 UBR 140
unbalanced 17.7-19.7 10±1 18 (28) 18 18 1.2 * UBR 220
balanced 17.7-19.7 3±0.3 18 (21) 18 18 0.4 UBR 220
unbalanced 21.2-23.6 10±1 18 (28) 18 18 1.2 * UBR 220
balanced 21.2-23.6 3±0.3 18 (21) 18 18 0.5 UBR 220
Unbalanced 24.5-26.5 10±1 18 (28) 18 18 1.2 * UBR 220
balanced 24.5-26.5 3±0.3 18 (21) 18 18 0.5 UBR 220
Unbalanced 27.5-29.5 10±1 18 (28) 18 18 1.3 * UBR 320
balanced 27.5-29.5 3±0.3 18 (21) 18 18 0.5 UBR 320
Unbalanced 37.5-39.5 10±1 18 (28) 18 18 1.3 * UBR 320
balanced 37.5-39.5 3±0.3 18 (21) 18 18 0.5 UBR 320

(*)  This data value  includes the coupling loss