Characterizing the Distribution of Microwave Surface Resistance of HTS Film Based on Metal Ring

Cheng, Zhigang; Chen, Liu; Bu, Shirong; Ning, Junsong; Zhang, Qishao; Wang, Zhanping

doi:10.1007/s10948-018-4923-1

Cited by 2 publications

(1 citation statement)

References 11 publications

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“…Since the MSR determines the metal power loss and the metal power loss is closely related to the quality factor of the microwave resonator, the MSR can be calculated based on the measurement of the quality factor of the resonator. At present, hollow resonant cavities [13][14][15] and dielectric resonators [16][17][18][19] are mainly used for the MSR measurement. For the former, part of the cavity wall is replaced with a metal under test (MUT), and the change in quality factor of the cavity before and after replacement can be used to extract the MSR of the MUT.…”

Section: Introductionmentioning

confidence: 99%

High-Temperature Measurement Technology for Microwave Surface Resistance of Metal Materials

Xie,

Zhang,

Niu

et al. 2023

International Journal of RF and Microwave Computer-Aided Engine

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The resonant cavity method is a commonly used method for high-temperature testing of the complex permittivity of dielectric materials. When a resonant cavity is used for high-temperature testing, the microwave surface resistance of the cavity metal material will deteriorate due to factors such as oxidation reaction and thermal fatigue, resulting in a decrease in testing accuracy and repeatability. Therefore, when designing a high-temperature resonant cavity, the temperature response characteristics of the microwave surface resistance of the cavity metal material should be obtained in advance. In this paper, a high-temperature measurement method of microwave surface resistance of metal materials based on a separate cylindrical resonator is proposed, a mathematical model of microwave surface resistance inversion based on the resonator quality factor is established, and a high-temperature measurement system of microwave surface resistance is integrated. The reliability of the proposed method and system is verified through simulation and experiment. The measurement frequency covers 7-18 GHz, and the maximum test temperature reaches 500°C. Systematic error of microwave surface resistance measurement at room temperature is less than 3%.

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