DC211: Directional Coupler for R9 Waveguide

DC211 is a directional coupler intended for sampling incident or reflected waves in highpower 900 MHz industrial applications using an R9 (WR975) rectangular waveguide.

The coupler is fixed to the waveguide with eight 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 896 – 922 MHz
Coupling Factor -60 dB ±1 dB
(lower coupling factors available upon request)
Directivity 25 dB min
Output connector Nf (SMAf available upon request)
VSWR (N, SMA) 1.25 max
Waveguide of destination R9 (247.65 mm x 123.825 mm)