20dB Directional Coupler

Rev : DRAF | Rev date : 06 Apr 2016
The RFS CDS**DE Directional Coupler series provides an RF broadband solution for indoor applications covering all wireless services from 380 to 2700 MHz.
The wide frequency range allows to use these couplers for multiband wireless Distributed Antenna Systems (DAS) or in combination with RADIAFLEX® radiating cable products.
The units couple off a defined fraction of the signal from 6 to 30 dB fulfilling highest RF performance requirements by minimizing reflections or RF loss combined with a compact design. As all passive RF products, the CDS**DE series ensures highest reliability and maintenance free operation.


  • 20 dB coupling value
  • Low Insertion loss
  • High power handling
  • Small size, Low weight
  • 7-16 DIN female connectors
  • Low PIM


Technical features


Product TypeDirectional Coupler
Techn. ApplicationIndoor
Number of Input Ports1
Number of Output Ports2
Connector Type7-16 female

Electrical Specifications

Frequency Range MHz380 - 2700
Impedance Ohm50
Insertion Loss max. dB0.3
Max. VSWR / Return LossVSWR/dB1.29/18 (1.29)
Intermodulation (IM3)150 dBc with 2x43 dBm tones
Coupling Value dB20
Directivity min. dB20 @380-698 MHz (18@698-2700 MHz)
Coupling Flatness max. dB±1.5
Total Input Power W200
RF Peak Power kW3000

Temperature Specifications

Temperature Range °C (°F)-25 to +65 (-13 to +149)

Mechanical Specifications

Height mm (in)26 (1.02)
Width mm (in)50 (1.97)
Length mm (in)190 (7.48)

Testing and Environmental

Environmental ClassIP65

Dimensions in mm

External Document Links