定向耦合器是一种通用的微波/毫米波部件，可用于信号的隔离、分离和混合，如功率的监测、源输出功率稳幅、信号源隔离、传输和反射的扫频测试等。主要技术指标有方向性、驻波比、耦合度、插入损耗。
耦合器一般为定向耦合器（Directional couplers），定向耦合器常用于对规定流向波信号进行取样，在无内负载时，定向耦合器往往是一四端口网络，其耦合区长度为四分之一波长的整数...
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单孔定向耦合器 single-hole directional coupler ; hole directional coupler
可变定向耦合器 transvar
光电定向耦合器 [电子] optoelectronic directional coupler
十字形定向耦合器 cross-guide coupler
光定向耦合器 optical directional coupler
锥形定向耦合器 tapered directional coupler
电子定向耦合器 electronic directional coupler
电光定向耦合器 electro-optic directional coupler
集成定向耦合器 integrated directional coupler
As the directional coupler has a wide use under different conditions. The directional coupler has a great many kinds and the otherness is large.
由于定向耦合器应用场合及条件的不同,其种类很多而且差异性极大。
参考来源 - 双脊波导宽带耦合器的设计According to microdisk's high Q theory, we put forward many structure to optimize the parameter and the performance of device. Such as MMI couple, direction coupler and negative gap couple and analyse the switch's extinction ratio and transmission characteristic.
高Q值理论分析指导微碟谐振腔光开关的结构设计,提出多种耦合结构优化光开关性能参数,例如设计基于MMI耦合、定向耦合器、负耦合结构的微碟谐振腔光开关,并对光开关的传输特性和消光比特性进行分析。
参考来源 - 基于半导体化合物微碟光开关研究Thr-ough design of the broaband directional coupler of groove guide, practical significance of the present method in analysing and designing the groove guide circuit is demonstrated concretely.
文中通过对宽带槽波导定向耦合器的具体设计,证明了本方法在槽波导电路分析和设计中的重要实际意义。
参考来源 - 部分介质填充槽波导色散特性的网络分析 in C·2,447,543篇论文数据，部分数据来源于NoteExpress
定向耦合器是四端口网络，直接设计十分困难。
Directional Couplers are four-port networks and fairly difficult to design.
分析了由双光纤定向耦合器组成的梳状滤波器的透射特性。
The transmission characteristics of all_fiber filter composed of double fiber directional couplers were studied.
本文介绍了一种基于新型微带定向耦合器的宽带矢量调制器。
The analysis and design of a vector modulator based on the novel microstrip directional coupler are presented.
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