中文摘要：

讨论了一种新型微带线电磁带隙（Electromagnetic Band—Gap，EBG）结构．该结构具有良好的阻带特性和极小的通带波纹．与通常的EBG结构相比，该结构具有小型化和结构紧凑的特点，应用该电磁带隙结构设计了一个微波合路器，包括两个EBG结构带阻滤波器和一个T型分支线，可以将两路频率不同的微波信号进行功率合成．微波合路器计算仿真和实验测量结果吻合很好，这种EBG结构在中小功率微波系统中具有良好的应用价值．

英文摘要：

A novel compact electromagnetic band-gap （EBG） structure, which exhibits a remarkable stop- band characteristic with small pass-band ripples, is presented in this paper. Compared with normal EBG structures, this novel design is easy for miniaturization and integration. Moreover, a compact microwave combiner is designed with the EBG structure, which contains two bandstop filters and one ＂T＂ junction. The combiner can synthesize microwave powers of two signals at difference frequencies. The measured results of the combiner agree well with the simulated results. It demonstrates good performances and has potential applications in microwave systems.