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Waveguide Couplers and Splitters

Smiths Interconnect supplies waveguide directional and non-directional couplers, combiners, and splitters for a variety of space, defense, and air defense radar applications. These devices operate in assigned bands and can be supplied as components or as passive systems integrated with other passive components.

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Features & Benefits

Smiths Interconnect has an expanding portfolio of couplers ranging from S to E-Band with coupler choice dependent on the application and the system considerations and designed for a variety of radar and space-based applications. These have been supplied as stand-alone products and as assemblies integrated with our RF filters, ferrite isolators, coaxial transitions, loads and terminations.
All products are produced using highly controlled manufacturing processes and utilise materials suitable for the operating environment and can be customized to incorporate a variety of flange details. Designs are subjected to rigorous thermal and dynamic analysis and where appropriate, and within the limit of our in-house capability, can be tested at operational average RF powers at seas-level, under vacuum or at partial pressure conditions.
Specific features

  • Hybrid couplers are available configured as 2 x 2, 2 x 1 and in a Ka-Band also 1 x 3 and 1 x 4 power splitters and non-equal split 2:1 types.
  • Devices are intrinsically suited to high power application. High power variants subjected to in house qualification subject to test limitations.
  • Can be integrated with internal or external loads and RF power detection sensors.
  • Readily mechanically configured to meet existing system constraints.
  • Optimised electrical performance over the assigned band.
  • EMC shielded by design.
Primary operating band Waveguide aperture Directional including test couplers Hybrid couplers
S-Band WR284 ✓✓✓
C-Band WR229 ✓✓✓ ✓✓✓
X-Band WR112 ✓✓✓✓ ✓✓
  WR90 ✓✓ ✓✓✓✓
Ku-Band WR75 & WR62 ✓✓✓✓
K-Band WR51 & WR42 ✓✓
Ka-Band WR34 & WR34 ✓✓
Q-Band WR22 ✓✓
V-Band WR19 ✓✓
 E-Band WR12 ✓✓
Smiths Interconnect a substantial range of devices supplied as components or integrated with other passive components such as ferrite isolators and RF filters. Products marked by “✓✓” table have space heritage, those marked “✓✓✓” indicate that the devices are capable of handling high power and those marked “✓✓✓✓” indicate that the devices are also space qualified or “✓✓✓*” indicating the devices are in the process of being qualified. For an up-to-date picture of the space heritage and capability or a copy of the most recent EQSR contact the factory or your local representative.


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