5、量化和性能可靠,于是出现了带状线和微带线。随后由于微波电路与系统的需要又相继出现了鳍线、槽线、共面波导和共面带状线等微波集成传输线。这样就出现了各种传输线定向耦合器。微波的传统应用是雷达和通信,这是微波作为信息载体的应用。现在雷达大多数是微波雷达,利用微波工作的雷达可以使用尺寸较小的天线,来获得很窄的波束宽度,以获取关于被测目标性质的更多的信息。由于微波具有频率高、频带宽、信息量大的特点,所以也被广泛应用于各种通信业务。Abstract–II–通信工程专业微波技术作业Directional coupler can have
6、many ways, coaxial, rectangular, circular waveguide, strip line and micro strip line can form a directional coupler, the rectangularwaveguide to realize directional coupler.Directional coupler is a four port devices, and each port are matching. It is in the microwa
7、ve and radar technology is widely applied in one element. Rectangular directional coupler indicators including coupling, isolation, direction, the input in Bobbi, band width. Dualdirectionalcouplerwaveguidecouplertypedevicebelongs,itismainlybasedontwoparallellatera