Multi-channel signal output circuit

A multi-channel signal output circuit comprises a radio frequency signal input end, at least one adjustment circuit, at least one radio frequency signal output end, and a logic control circuit. The radio frequency signal input end is suitable for receiving a first radio frequency signal. Each adjustment circuit comprises a frequency adjustment circuit and a phase-locked loop, wherein the frequency adjustment circuit is suitable for acquiring an adjustment signal based on the first radio frequency signal, the frequency of the adjustment signal is a first frequency threshold, and the phase-locked loop is suitable for locking the frequency of the adjustment signal when the frequency of the adjustment signal is greater than or equal to a second frequency threshold. The radio frequency signal output ends and the adjustment circuits are connected in a one-to-one correspondence manner, and each radio frequency signal output end is suitable for outputting a second radio frequency signal relevant to the frequency-locked adjustment signal. The logic control circuit comprises a trigger unit suitable for generating trigger signals at least corresponding to the frequency adjustment circuits and the phase-locked loops. By adopting the multi-channel signal output circuit of the invention, the cost is reduced, and the efficiency of signal adjustment is increased.