Question

Total draw length of directional coupler is​

Answer 1

Answer:

120ghz is the answer I hope it helps

Answer 2

Answer:

A directional coupler is a measurement instrument that samples a small amount of microwave power. Incident power, reflected power, and VSWR values are among the power measures.

Explanation:

A $4$-port waveguide junction with a primary main waveguide and a secondary auxiliary waveguide is known as a Directional Coupler. A directional coupler is depicted in the diagram below.

Two neighbouring Ge0 $4$ Si $0.96$ rib waveguides made up the coupler. The waveguide separation was varied from $1.5$ to $3m$, while the interaction length was varied between $3$ and $7$ mm. The coupling coefficient was $3.9$cm–$1$ and the coupling length was $0.46$ cm for a $3m$  inter wave guide gap.