Description

10 dB directional coupler: An RF passive device designed to tap off a small, controlled portion of the signal from a main transmission line, with a coupling factor of 10 dB—meaning about 10% of the input power is coupled to the secondary port while approximately 90% continues through the main path. Widely used for signal monitoring, measurement, power sampling, and feedback in RF and microwave systems, it offers low insertion loss on the through line, good directivity, and stable performance across broad frequency ranges, supporting GSM, LTE, and other wireless applications.