矩形波导定向耦合器特性分析  

Analysis of the characteristics of rectangular waveguide directional coupler

作　　者：陈宗龙[1] 童玲[1] 田雨[1] 高博[1] 

机构地区：[1]电子科技大学微波毫米波技术与无线通信研究室,成都611731

出　　处：《电子测量技术》2012年第9期28-31,共4页Electronic Measurement Technology

摘　　要：根据小孔耦合理论,简单介绍矩形波导单孔定向耦合器的最佳技术指标;为了实现宽频带、弱耦合、最佳耦合平坦度、高方向性等指标,需要设计一种新型的矩形波导多孔定向耦合器,分别对耦合孔位置、耦合孔数目、端口驻波比、耦合孔分布方式及耦合孔间距等影响定向耦合器耦合平坦度、方向性指标的因素做出详细的分析,在此基础上,采用基于切比雪夫孔阵分布的矩形波导多孔定向耦合器,从而实现了全频段耦合平坦度为±0.4dB,方向性大于30dB的矩形波导多孔定向耦合器。According to the Bethe hole coupling theory,a brief introduction of the best technical indicators is made to rectangular waveguide single-hole directional coupler.In order to achieve the indicators of wide band,weak coupling,the best coupling flatness and high directivity,a new type of rectangular waveguide multi-hole directional coupler is designed.A detailed analysis of the coupling hole＇s position,number,VSWR and distribution pattern is given for influencing the indicators of coupling flatness,directivity of directional coupler,in view of this,using the method of distribution of chebyshev aperture,and implemented to satisfy the indicators of directional coupler.

关 键 词：波导定向耦合器 切比雪夫分布 弱耦合 最佳耦合平坦度 高方向性 

分 类 号：TM931[电气工程—电力电子与电力传动]