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。最后。介绍了一种基于这种微波鉴相器的瞬时测频接收机，并给出了用于温度补偿和误差校正的自动快速测试方法。

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.DIFM receiver based on the MPD is introduced.In addition,an automatic fast measurement method used for temperature compensation and error correction is presented.

TN57