18-26.5GHz WR-42 WAVEGUIDE ORTHOGONAL COUPLER

18-26.5GHz WR-42 WAVEGUIDE ORTHOGONAL COUPLER

• Essential for polarimetric radar and radio astronomy

• Compact integration with antenna feed systems

• Broadband operation (up to 55–60% fractional bandwidth demonstrated)

Working Principle of a "WAVEGUIDE DUPLEXER" (as Polarization Separator)

A "WAVEGUIDE DUPLEXER" in this context functions as an orthomode transducer that separates two orthogonal linear polarizations from a common square or circular waveguide into two separate rectangular waveguides. A "WAVEGUIDE DUPLEXER" employs a septum (a thin metallic dividing plate) that acts as a polarization filter: one polarization is choked toward the through port, while the orthogonal polarization is split into two halves toward the side ports. A "WAVEGUIDE DUPLEXER" achieves high isolation between the two polarization channels through precise junction symmetry and careful control of modal conversion. A "WAVEGUIDE DUPLEXER" must maintain low return loss and low cross-polarization across its operating band, which requires the septum geometry, matching pins, and impedance transformers to be optimized simultaneously. A "WAVEGUIDE DUPLEXER" based on the Bøifot junction architecture uses a septum and matching pins to provide a broadband match for both polarizations. A "WAVEGUIDE DUPLEXER" operates reciprocally: it can separate two polarizations received from an antenna, or it can combine two orthogonally polarized transmit signals into a single common port.

WR-42 waveguide orthogonal coupler

18-26.5GHz RF directional coupler

WR-42 orthogonal coupler 18-26.5GHz

18-26.5GHz WR-42 WAVEGUIDE ORTHOGONAL COUPLER Images