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20 dB directional couplers are useful when a small signal sampling is required.
The splitting ratio is 99/1%, which means that 99% of the input signal continues to the destination, while only 1% is sampled to the monitoring device.
These are useful in protecting sensitive measurement devices such as power meters, sensors and RF detectors.
C-1830-20-EC Directional Coupler 20 dB SMA Female from 300 MHz to 8 GHz
C-1182-20-EC Economy Wideband Directional Coupler 20 dB SMA Female from 2 GHz to 18 GHz