关键词: 合路器, 匹配, 谐振器, 谐波响应

Abstract: In this paper,a microstrip three-frequency combiner is designed,which can combine different array antenna systems.It consists of distributed input coupling lines, output feeders, resonators and co-frequency combiners.The combiner does not need matching circuit, so it can reduce size and realize miniaturization.Because microstrip resonator can produce harmonics,the resonator is placed in the appropriate position of the input and output feeder to suppress harmonic response,thereby improving the isolation of the combiner.

Key words: combiner, matching, resonator, harmonic response