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首页> 外文期刊>The mediterranean journal of electronics and communications >THREE DIMENTIONAL REDUCTION MESHING APPLIED IN ENVELOPE FINITE-ELEMENT TIME-DOMAIN FOR MICROWAVE PASSIVE STRUCTURES
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THREE DIMENTIONAL REDUCTION MESHING APPLIED IN ENVELOPE FINITE-ELEMENT TIME-DOMAIN FOR MICROWAVE PASSIVE STRUCTURES

机译：微波无源结构的包络有限元时域中的三维降维网

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摘要

This paper proposes a new approach to solve three dimensional Envelope Finite-Element Time Domain method using reduction meshing (RMEV-FETD) technique, when the general microwave, regularly passive structures are applied. Stability condition of the time domain envelope wave form depends on the Nyquist criteria, rather than that of the carrier in traditional time domain. Here, the wave equations are treated in time domain using finite element method based on Newmark-Beta time stepping. Comparison of results with traditional FETD or Finite Difference Time Domain (FETD) method takes into account only the signal enveloped in RMEV-FETD simulation. In our case, the memory allocation and computational time depend on the envelope ratio and was reduced when it is very small, with the successfully implementation of the reduction meshing technique. The approach involves the mixed magnetic and electric fields equation technique. In this sense, a program in FORTRAN has been elaborated to determine different parameters characterizing the studied structure. A good agreement between numerical and reported results is important to validate the theory of three-dimensional reduction meshing in envelope Finite Element Time domain.
机译：本文提出了一种新的方法，当应用常规微波，规则无源结构时，采用还原网格划分法（RMEV-FETD）解决三维包络有限元时域方法。时域包络波形的稳定性条件取决于奈奎斯特准则，而不是传统时域中的载波。这里，基于Newmark-Beta时间步长的有限元方法在时域中处理波动方程。与传统FETD或有限差分时域（FETD）方法的结果比较仅考虑RMEV-FETD仿真中包络的信号。在我们的情况下，内存分配和计算时间取决于包络率，并且当内存很小时，内存分配和计算时间会减少，并成功实现了简化网格划分技术。该方法涉及混合磁场和电场方程技术。从这个意义上讲，FORTRAN中的程序已经过精心设计，可以确定表征所研究结构的不同参数。数值结果与报告结果之间的良好一致性对于验证信封有限元时域中的三维还原网格划分理论非常重要。

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