The analysis of ultra wideband wheel microstrip patch antenna using non-uniform photonic bandgap substrate structure

11th International Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2005] Pub Date : 2005-06-01 DOI:10.1109/ANTEM.2005.7852119

Y. Madany, H. Elkamchouchi

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Abstract

The characteristics of new ultra wideband (UWB) wheel microstrip patch antenna using non-uniform photonic bandgap (PBG) substrate structure has been analyzed using a full 3D electromagnetic field inside a structure based on the finite element method. The UWB technologies have been developed to exploit a substantially new spectrum resource and to realize ultra high-speed communication, high precision radar, and other sensing systems. The antenna has UWB approximately in range of 1 MHz to 20 GHz and its performance above 20 GHz is sensitive to the gap position in the ground plane. These gap positions enhance some modes and weaken others, which have been used to control the antenna bandwidths up to 31.4 %. The proposed antenna is constructed on ground plane of thickness 0.1 mm and FR-4 epoxy substrate of thickness 1.6 mm with relative permittivity 4.4. The radiation characteristics for the designed antenna such as return loss, input impedance, near field, radiation pattern and 3D-polar radiation pattern with respect to changes on the air gap position in the ground plane are obtained using numerical simulations.

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基于非均匀光子带隙衬底结构的超宽带轮式微带贴片天线分析

基于有限元方法，利用结构内部的全三维电磁场分析了采用非均匀光子带隙(PBG)衬底结构的新型超宽带轮式微带贴片天线的特性。超宽带技术的发展是为了开发一种全新的频谱资源，实现超高速通信、高精度雷达和其他传感系统。该天线的超宽带范围约为1mhz ~ 20ghz，在20ghz以上的天线性能对接地面间隙位置很敏感。这些间隙位置增强了某些模式，削弱了另一些模式，使天线带宽控制在31.4%以内。该天线结构在厚度为0.1 mm的接地面和厚度为1.6 mm的FR-4环氧基板上，相对介电常数为4.4。通过数值模拟得到了天线的回波损耗、输入阻抗、近场、辐射方向图和三维极辐射方向图随地平面气隙位置变化的特性。

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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11th International Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2005]

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