DC311: Miniature Directional Coupler for R58 Waveguide

DC311 is a miniature directional coupler intended for sampling incident or reflected waves in high-power 5.8 GHz industrial applications using an R58 (WR159) rectangular waveguide.

The coupler is fixed to the waveguide with six M3 or similar-diameter screws after machining of appropriate holes in the broad waveguide wall.

Simple reversing the coupler causes it to sample the wave propagating in the opposite direction.

Specifications
Frequency Range 5700 – 5900 MHz
Coupling Factor -60 dB ±1 dB standard
-50 dB ±1dB available on special order
-70 dB ±1dB available on special order
Directivity 25 dB min
Output connector Nf (SMAf available upon request)
VSWR (N, SMA) 1.6 max
Waveguide of destination R58 (40.39 mm x 20.19 mm, wall thickness 1.6 mm)