Description

30 dB directional coupler: An RF passive component designed to sample a very small portion of the signal from a main transmission line, with a coupling factor of 30 dB—meaning about 0.1% of the input power is coupled to the secondary port while roughly 99.9% continues through. Widely used in RF and microwave systems for sensitive signal monitoring, precise measurement, calibration, and feedback, it provides extremely low insertion loss on the through path, excellent directivity, and stable broadband performance, making it ideal for high-frequency and low-level testing applications.