Robust Well-Conditioned Waveform Evaluation Based on Higher Order Vector FE/BI Method

BAN Yong-ling; NIE Zai-ping; YU Zhe-feng

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Robust Well-Conditioned Waveform Evaluation Based on Higher Order Vector FE/BI Method

更新时间：2025-07-16

- Robust Well-Conditioned Waveform Evaluation Based on Higher Order Vector FE/BI Method
- Acta Electronica Sinica Vol. 35, Issue 1, Pages: 170-174(2007)
- 作者机构：
  
  1. 电子科技大学电子工程学院,四川,成都,610054
  2. 中国空气动力研究与发展中心,四川,绵阳,621000
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN82
- Published：2007
- 稿件说明：
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BAN Yong-ling, NIE Zai-ping, YU Zhe-feng. Robust Well-Conditioned Waveform Evaluation Based on Higher Order Vector FE/BI Method[J]. Acta Electronica Sinica, 2007, 35(1): 170-174.
DOI：

BAN Yong-ling, NIE Zai-ping, YU Zhe-feng. Robust Well-Conditioned Waveform Evaluation Based on Higher Order Vector FE/BI Method[J]. Acta Electronica Sinica, 2007, 35(1): 170-174. DOI：

摘要

将矢量有限元/边界积分混合方法(FE/BI)用于背腔式贴片天线的输入阻抗建模

在FE/BI方法中

采用基于六面体网格(hexahedron)的高阶矢量基函数(higher order vector basis functions)展开未知场分量;结合高阶矢量FE/BI

采用最近发展起来的WCAWE技术(Well-Conditioned Asymptotic Waveform Evaluation)实现了贴片天线输入阻抗的快速计算;WCAWE技术通过正交化的方式获得低阶模型

这种方式避免了Arnoldi等子空间技术增加矩阵尺度的缺点

同时也确保具有比传统的AWE更好的频带展宽特性;关于输入阻抗计算的数值结果将证明WCAWE技术的优势.

Abstract

The vector finite element-boundary integral (FE-BI) method is adopted to formulate the radiation problem for cavity-backed patch antenna.The well-conditioned asymptotic waveform evaluation (WCAWE) is integrated into the FE-BI method to realize fast computing of input impedance of patch antenna over a wide frequency band.In contrast to classical AWE techniques

WCAWE is robust and doesn’t stagnate.Moreover

unlike the linearized Krylov subspace methods

WCAWE doesn't require the neglection of higher order terms or the introduction of extra degrees of freedom.Numerical results for input impedance are presented to illustrate the robustness of the WCAWE.

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