Abstract: The field-induced insulator-metal transition material can meet the urgent demands of self-adaptive efficient protection of electronic information equipment under strong electromagnetic pulse. However, the pulse response test method of the material is not clear at present, which is a theoretical subject to be urgently solved. A micro-strip line test method with wide test range and fast response time is proposed based on the principle of micro-strip line, and a corresponding test system is developed. The equivalent circuit model of the test system in terms of horizontal polarization is established, and the formula of material's resistance after phase change applied by electromagnetic pulse is derived. The accuracy and feasibility of the theoretical model and test method are verified by resistances equivalent test and material sample performance test. The theoretically calculated and test results show that the proposed test method can satisfy the requirements of pulse response test with resistance range of 1 Ω-30 kΩ, the resistance, response time and recovery time of the material after the phase transition can be calculated, which provides a theoretical and technical support of quantitative evaluation of pulse response characteristics of the field-induced insulator-metal transition materials and new material design.

Key words: field-inducedinsulator-metaltransitionmaterial, micro-stripline, testmethod, pulseresponse