Marki offers two types of low loss directional couplers for load-pull and high power test applications. The high power stripline couplers use wider traces and thicker circuit boards for a flat coupling value across the band, while the airline directional couplers use air as the dielectric material for the lowest possible loss and highest power handling, but with a varying coupling factor.
AIR-LINE DIRECTIONAL COUPLER
Mean Coupling: 30 dBc Directivity: 22 dB Power Handling: 200 W
Air-Line Directional Coupler
Mean Coupling: 27 dBc Directivity: 24 dB Power Handling: 50 W
AIR-LINE DIRECTIONAL COUPLER
Mean Coupling: 27 dBc Directivity: 24 dB Power Handling: 20 W