18 GHz to 26.5 GHz, 35 dB Isolation, 30 dB Cross Polarization, K-band Orthomode Transducer


Mi-Wave’s 281 Series Orthomode Transducer couples two orthogonal linearly
polarized signals simultaneously while providing polarization isolation between
transmit and receive.

Orthomode Transducers (OMT’s) are used in applications involving radiometers and dual-polarized antennas, and can be used as a diplexer for communications links. They feature low insertion loss and broadband operation.


  • VSWR 1.2:1 typical
  • Isolation > 30 dB typical
  • Full Bandwidth Available
  • Higher Frequency Units will be Quoted on Request
  • Available from 12.4 to 220 GHz with 3% or Greater Bandwidth


  • Satellite Data Transmission
  • Satellite Telivision Broadcasting
  • Military Radar Systems
  • Telecommunications Antennas
  • Sensors
  • Radiometers
  • Instrumentation
*All data presented is collected from a sample lot.
* Actual data may vary unit to unit, slightly.
*All testing was performed under +25 °C case temperature.
*Consult factory to confirm if material, plating, size, shape, orientation and any electrical parameter is critical for the application as website information is for reference only.
*Millimeter Wave Products, Inc. reserves the right to change the information presented on website without notice as we continue to enhance the performance and design of our products.

Orthomode Transducers OMT 281 Series

Orthomode Transducers separate a signal applied to the circular waveguide input port into its two linear orthogonal components at the rectangular waveguide output ports with greater than 30 dB isolation between the polarizations. In reverse, two orthogonal linearly polarized signals combine, producing an output in the circular waveguide port. The resulting polarization may be linear, circular, or elliptical depending on the relative phase and amplitude of the two orthogonal input signals.