【摘要】 基片集成波导（SIW）具有损耗低、性能好、易于集成等优点，作为一种新型的导波技术已经被广泛地用于微波与毫米波电路。本文基于SIW的本征模理论，设计了一款X波段的反相功率分配器，通过微带馈电、缝隙耦合，将微带线的准TEM模转换为波导的TE₂₀模，最后通过SIW与微带的过渡结构实现反相等分功率传输。经仿真，该反相功率分配器中心工作频率为10GHz,S11小于-10dB带宽为8.19-11.79GHz（36%），通带内传输系数为-3.32dB，输出相位相差约180°，具有损耗低、相位差稳定、易于与微带线集成等优点。更多还原

【Abstract】 Substrate integrated waveguide（SIW） has been widely used in microwave and millimeter-wave circuits as a new waveguide technology with low loss, good performance and easy integration. Based on the eigenmode theory of SIW, an X-band reverse-phase power divider is designed. The quasi-TEM mode of the microstrip line is converted to the TE₂₀ mode of the waveguide through microstrip feed and gap coupling, and the reverse-phase equipartition power transmission is realized through the transition structure of SIW and microstrip. The simulation results show that the center operating frequency of the inverter is 10GHz, the bandwidth of S11 less than-10dB is 8.19-11.79GHz（36%）, and the transmission coefficient in the passband is-3.32dB, the output phase difference is about 180°, and it has the advantages of low loss, stable phase difference, and easy integration with microstrip line.更多还原