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Custom Diplexer & Triplexer Design      [Close]

CMI has developed various diplexers, and triplexers from 2 to 200 GHz with passband from 0.5% to 20%. Each device is precisely designed for optimum performance, size, and manufacturability. By combining precision CAD tools, 40+ years of device design experience, and precise fabrication, CMI can produce these high performance devices with no tuning screws. This leads to improved power handling, very low PIM, and the elimination of bench tuning.

Depending on the application, these devices can be manufactured by direct machining or by copper electroforming in a single piece construction with integral flanges for high mechanical strength and very low PIM.
CMI can custom design diplexers and triplexers to meet your specific RF, Mechanical, and layout needs.


Space Qualified Full K/Ka Diplexer
Courtesy of Northrop Grumman
  • K-Band (1.3% BW)
  • Ka-Band (1% BW)
  • Band Separation (27%)
  • Return Loss > 25 dB
  • Insertion Loss < 0.25 dB
  • Isolation >45 dB
  • Aluminum Split Block

G-Band Diplexer
  • Port-1: (9% BW)
  • Port-2: (2% BW)
  • Band Separation (8%)
  • Insertion Loss < 1.0 dB
  • Isolation >25 dB
  • One Piece Construction

Space Qualified C-Band Diplexers
  • Tx: 3.4 - 4.2 GHz
  • Rx: 5.85 - 6.725 GHz
  • Return Loss > 20 dB
  • Insertion Loss < 0.1 dB
  • Isolation >55 dB
  • Handles High Temperature
  • High Power Handling
  • One Piece Construction
  • Size: 9"x6"x3"
  • Mass: 2.0 lbs

Space Qualified Ku-Band Diplexers
  • Tx: 10.95 - 12.75 GHz
  • Rx: 13.75 - 14.5 GHz
  • Return Loss > 25 dB
  • Insertion Loss < 0.15 dB
  • Isolation >55 dB
  • Handles High Temperature
  • High Power Handling
  • One Piece Construction
  • Size: 6"x2.5"x1.5"
  • Mass: 0.5 lbs

Custom Filter, Diplexer, & Triplexer Design
Custom Polarizer Design
Custom Septum Polarizer Design
Flexible Waveguides
Optical Coatings
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