Abstract
Cavity method is widely used in microwave measurement of electromagnetic properties. In this paper, a new double-ridged cavity method is proposed, which can enhance the operational frequency bandwidth. Building on the perturbation theory, the measurement equations required for permittivity and permeability extraction are developed. And for obtaining the electromagnetic properties more accurately, a calibration method is introduced to calibrate the shape factors. The proposed method is first simulated using the High Frequency Structure Simulator (HFSS) to demonstrate the linear relationship between the resonant parameters and the electromagnetic properties. Thereafter, a series of standard samples are also tested and verified by using the numerical simulator. For comparison the reference data, the calibration method can obviously improve the accuracy of electromagnetic parameters, especially the imag part error of complex permeability, which is reduced from more than 60% to about 4%.
How to Cite:
Song, G. ., Zhang, B. ., Lyu, Y. ., He, C. . & Wu, B. ., (2019) “Characterization of electromagnetic properties by simulations using the double-ridged cavity”, Review of Progress in Quantitative Nondestructive Evaluation .
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