The principle and design of a novel microstrip directional coupler are presented.The error performance of the microwave phase discriminator (MPD) based on the directional coupler is also investigated.

• 摘要介绍了一种新型微带定向耦合器的原理和设计方法，给出了采用这种新型定向耦合器的微波鉴相器设计，并得到其误差性能的测试方法和测试结果。