Directional couplers divide a RF signal in 2, with different power level. This will be used, for instance, to sample a signal.
Main coupling ratio are :
1/3 – 2/3 : 4.7 dB
1/4 – 3/4 : 6 dB
1/5 – 4/5 : 7 dB
1/10 – 9/10 : 10 dB
Other coupling ratios can be defined.
HYTEM offers a wide range of components in different ferquency ranges and connectors