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Out of the box, in every box. Cost effective innovations are the hallmark of every Antronix design. What's next? At Antronix, we answer this question every day with intelligent design that optimize performance for today's HFC network demand, as well as tomorrow's. Many choices. One source.

Directional Couplers

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SDP Directional Couplers

Antronix's directional couplers are the industry leader for minimal insertion loss. Our couplers are optimized for the most demanding drop network architectures. Our low inter-modulation design and optimized return band prevents high cable modem signals from affecting forward band transmission. Directional couplers are ideal for present and future multimedia applications, including video, data, telephony, and IP; as well as transmission sensitive digital compression frameworks such as QAM and OFDM data. Directional couplers are available in several configurations for flexibility and application in any architecture, and our 1.2 GHz coupler provide performance in the MoCA band.


  • 6 kv ring wave surge protection on all ports
  • High port-to-port isolation in return band
  • Low inter-modulation design
  • Zinc alloy die-cast housing and back plate for superior housing integrity
  • 15 psi sealed SCTE compliant F-ports
  • 100% soldered back plate
  • Machine threaded F-ports
  • Available with SCTE compliant CamPort® (3000 series) or Eclipse contact technology F-port
  • Comprehensive line of loss values
  • L and T style housings available


  • Excellent output return loss in return band
  • Nickel alloy plating for the highest level of corrosion resistance
  • Ideal for digital and cable modem applications
  • High surge resistance to withstand harsh electrical environments
  • Unique plating alloy for unmatched corrosion resistance