Method for measuring phase displacement of microwave and automatic device thereof

The present invention relates to a radio measurement techniques, and more particularly to a microwave phase shift measuring method and an automatic apparatus. Existing bridge measuring apparatus due to a mismatch error, in order to reduce mismatch errors, often only necessary to insert a number of manually operated dispenser microwave signals in two-channel measuring device in the bridge. When the microwave reflective element itself is large, the deployment is difficult to achieve, so the lower the measurement accuracy. In the measurement method of the present invention provides a microwave phase shift and automatic measuring device, without inserting dispenser, but to use an auxiliary symbol phase shifter to change the reflection coefficient, the average of four measurements using the method to eliminate the mismatch errors. Further, with the auxiliary drive motor rotation phase shifter, the stepping motor driving a standard phase shifter, by the computer hardware and a software program which controls the measurement process, and data calculation text printing, automated measurement. Microwave phase shift of the automatic device of the invention provides a phase shift of more sophisticated measuring apparatus, having a production and application value in the field of scientific research.