摘要
应用模式匹配法分析了矩形波导中双面阶梯的不连续性。在此基础上,设计和优化了一个C波段1/4波长传输线耦合谐振膜片型带通滤波器。与传统的直接耦合半波长谐振腔型带通滤波器相比,这种滤波器带外抑制度高,阻带宽,特别是其尺寸缩短了近40%。该滤波器的实测结果与数值计算结果吻合很好。
The double-plane step discontinuity in rectangular waveguide is analyzed utilizing mode-matching method. Then a C-band quarter wave transmission line coupled resonant bandpass filter is designed and optimized in this paper. The filter has not only wider stop band but also decreased dimension （approximately 40% shorter） comparing with traditional direct-coupled half wave resonator ones. Theoretical results of the filter agree well with measured data.
出处
《电波科学学报》
EI
CSCD
北大核心
2005年第6期806-809,839,共5页
Chinese Journal of Radio Science
关键词
模式匹配法
双面阶梯不连续性
谐振膜片
阻带
mode matching method
double plane step discontinuity
resonant iris
stop band
