Modified Smith-chart representation as applied to microstrip antenna design for wireless LAN applications

2003 IEEE International Symposium on Electromagnetic Compatibility, 2003. EMC '03. Pub Date : 2003-05-16 DOI:10.1109/ICSMC2.2003.1428217

S. Malisuwan, M. Charoenwattanaporn

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引用次数: 7

Abstract

In this paper, the frequency-dependent effective permittivity concept is applied to construct a frequency-dependent (lossy) Smith-chart to analyze microstrip structure characteristics. The proposed algorithm depicting the dynamic permittivity of the microstrip structure directly leads to a convenient and modified Smith-chart representation that includes the frequency-dependent influence of fringing field and the lossy characteristics cohesively. The efficacy of the model is illustrated with an example concerning a microstrip patch antenna for wireless LAN applications. Relevant simulations show that the input impedances calculated from the model are more accurate than those from the previous model in the literature by comparing to the measure results, as illustrated with an example of a patch antenna. This model is compatible for CAD efforts with MATLABtrade facilitating fast and user-friendly implementations. Further, as far as the author knows of, this is the first attempt in depicting the characteristics of a microstrip antenna via Cole-Cole diagram format

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改进的史密斯图表示法在无线局域网微带天线设计中的应用

本文采用频率相关的有效介电常数概念，构造了一个频率相关(有损)的史密斯图来分析微带结构特性。所提出的描述微带结构动态介电常数的算法直接导致了一种方便和改进的史密斯图表示，该表示将边缘场的频率相关影响和损耗特性紧密结合在一起。以无线局域网应用的微带贴片天线为例说明了该模型的有效性。以贴片天线为例，通过与实测结果对比，仿真结果表明，该模型计算的输入阻抗比文献中先前模型计算的输入阻抗更精确。该模型兼容CAD工作与MATLABtrade促进快速和用户友好的实现。此外，据作者所知，这是第一次尝试用Cole-Cole图格式描绘微带天线的特性

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

2003 IEEE International Symposium on Electromagnetic Compatibility, 2003. EMC '03.

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