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《Journal of Electronics and Information Technology》 1993-01
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AN ACCURATE VARIATIONAL ANALYSIS FOR MEASUREMENT OF THE COMPLEX DIELECTRIC CONSTANT OF A SAMPLE ROD INSERTED IN A RESONANT CAVITY

Liang Changhong Xie Yongjun(Xidian University, Xi'an 710071)  
The Lindell formulation based on the generalized variational principle is derived, and an accurate variational analytical result of the measurement of the complex diele(?)ric constant by the Rayleigh-Ritz method is obtained when the loss is small. The concept of the complex frequency ω is introduced in a com non case, and also touched on the stationarity of the solution, then compared the results with he pertubational result. It is demon(?)ared with these results that it is necessary to pay attention to the theortical error of pertubational method.
【Fund】: 国家教委博士点基金资助课题
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