Couplers Directional And Hybrid Standard
Directional couplers provide flat coupling of one signal path to another in one direction only (known as directivity) and low VSWR over one full octave or more. They commonly consist of an auxiliary line coupling electrically to a main line, which becomes more complex as the bandwidth increases. Hybrid Couplers have the important characteristic, that allows addition of two or more signals without interaction regardless of how close the frequencies of the signals may be. This feature can often eliminate the need for filters which can often introduce signal aberrations.