Bandwidth Enhancement of Microstrip Patch Antennas by Implementing Circular Unit Cells in Circular Pattern

2013 5th International Conference on Computational Intelligence and Communication Networks Pub Date : 2013-09-27 DOI:10.1109/CICN.2013.11

Ruchika Gupta, Mithilesh Kumar

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引用次数: 8

Abstract

The micro strip patch antenna is the most preferred for low cost and compact design. The proposed antenna design is simulated using FR-4 substrate with dielectric constant of 4.54 and thickness of 1.60mm on electromagnetic (EM) simulation software. The antenna designed has a compact structure with a total size of 60x60mm square. The bandwidth of micro strip patch antenna is enhanced by replacing a conducting ground plane by a high impedance EBG layer. The circular unit cells are placed in a circular pattern and it is found that on increasing the radius of each circular EBG cell, the bandwidth is increased. It is also observed that on increasing the radii of vias, there is a slight decrement in the bandwidth of micro strip patch antennas. The bandwidth of micro strip patch antenna is increased from 13.41% to 18.68% when radius of EBG patches is increased from 2.5mm to 3.5mm which is much wider than the bandwidth of conventional antenna that is calculated to be 4.28%. The simulated results of the integrated antenna for wireless applications shows the good agreement with the proposed scheme.

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利用圆形单元格实现微带贴片天线的带宽增强

微带贴片天线因其低成本和紧凑的设计而成为首选。采用介电常数为4.54、厚度为1.60mm的FR-4衬底在电磁仿真软件上进行了仿真。设计的天线结构紧凑，总尺寸为60x60mm方。微带贴片天线采用高阻抗EBG层代替导电接地面，提高了天线的带宽。将圆形单元格以圆形方式放置，发现随着每个圆形单元格半径的增加，带宽增加。随着通孔半径的增大，微带贴片天线的带宽有轻微的衰减。当EBG贴片半径从2.5mm增加到3.5mm时，微带贴片天线的带宽从13.41%增加到18.68%，比传统天线的4.28%带宽宽得多。无线应用集成天线的仿真结果表明，该方案与所提方案吻合较好。

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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2013 5th International Conference on Computational Intelligence and Communication Networks

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