15dB Directional Coupler

Rev : B | Rev date : 08 Apr 2020

RFS CDS*-43 series Directional Couplers have been designed for a variety of wireless applications in the frequency band from 694 to 3800MHz. The unit couples off a defined fraction of a RF signal from 5 to 30 dB with minimal reflections or loss. The broad frequency range is ideally suited for multi-band distributed antenna systems or in combination with RADIAFLEX® radiating cables.


  • 4.3-10-female interfaces
  • PIM optimized design (160dBc @2x43dBm)
  • Low insertion loss
  • High power handling
  • Small size, Low weight

Technical features


Product TypeDirectional Coupler
Techn. ApplicationIndoor
Number of Input Ports1
Number of Output Ports2
Connector Type4.3-10 female

Electrical Specifications

Frequency Range MHz694 - 3800
Impedance Ohm50
Insertion Loss max. dB0.4
Max. VSWR / Return LossVSWR/dB1.30/17.7 (1.3)
Intermodulation (IM3)-160dBc (2x43dBm)
Coupling Value dB15
Coupling Flatness max. dB±1.0
Total Input Power W400

Temperature Specifications

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

Mechanical Specifications

Height mm (in)28.4 (1.12)
Width mm (in)69.2 (2.72)
Length mm (in)174.8 (6.88)

Testing and Environmental

Environmental ClassIP65

External Document Links


Directivity: ≥ 20dB @ 694-2700MHz, ≥ 18dB @ 2700-3800MHz