Keyee Microwave manufactures waveguide crossguide directional couplers covering a wide frequency range from WR650 to WR10 and material are in brass or aluminum. Both single arm, dual-arm and multi-arm can be realized. Crossguide coupler are optional with flange and coaxial connector types and configurations to cover all requirements you may have for microwave couplers.
For more info, please contact sales engineer.