RF coupler

　　Radio frequency coupler is a passive device used for transmitting and distributing signal power in radio frequency (RF) circuits. Its main function is to extract a portion of the signal energy for monitoring or other purposes without interfering with the original signal.

　　working principle

　　Radio frequency couplers are usually composed of two transmission lines that are close to each other, and transfer a portion of the energy from the main transmission line to the secondary transmission line through electromagnetic coupling. The coupling coefficient determines the amount of energy that can be extracted by the secondary transmission line.

　　Main function

　　Signal monitoring: RF couplers can easily extract RF signals for monitoring and analysis without significantly affecting the original signal.

　　Power allocation: In some complex RF systems, RF couplers can be used to allocate and adjust signal power to ensure the normal operation of various parts of the system.

　　Signal synthesis: In some application scenarios, RF couplers can also be used to synthesize multiple RF signals for subsequent processing and transmission.

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