The new series of directional couplers from Knowles brand DLI, provides another example of how high permittivity, temperature stable materials can reduce size/weight and provide excellent performance repeatability.

These small size directional couplers are manufactured using DLI’s precision thin film technology and offer a great option for microwave systems in commercial, military and space applications. 

Designed for a 50Ω characteristic impedance, they offer a turnkey surface mount solution for high frequency power monitoring.  The four port couplers are excellent for high frequency signal monitoring applications where board space is a premium and quality power detection or injection is required.  COTS devices covering C, X and Ku bands offer quick turn solutions in a solder surface mount package with flexible PCB feed line configuration.  Both 10dB and 20dB coupling values are available within each frequency band both with a common footprint for maximum flexibility.

The devices are designed to provide high directivity, excellent repeatability and stable frequency over the temperature range -55º to +125 ºC. 

Chip and wire mount devices with the same performance are also available - custom solutions are also available to suit individual size and performance parameters.