Research on microwave and millimeter-wave IPD measurement system for radome

Radome is of great importance in all kinds of aircraft, such as carrier rocket, airship, missile and controllable satellite. Insert phase delay (IPD) is one of the vital electrical parameters influencing electric properties of the radome. It is essential to measure the IPD in manufacturing of the radome. In this paper, the microwave and millimeter-wave technology is introduced into the IPD measurement for the radome. The basic theory of the IPD measurement using microwave and millimeter-wave is analyzed, the measurement system scheme with the vector network analyzer as the kernel part is developed, and the signal detection of microwave and millimeter-wave in the system is discussed. This system has high precision and powerful flexibility, and can satisfy the requirement of the IPD precise measurement for the radome.