Complementary Split Ring Resonator Effects on Radiation Pattern Reconfigurable Circular Microstrip Antennas

Q3 Energy

Iranian Journal of Electrical and Electronic Engineering Pub Date : 2021-03-10 DOI:10.22068/IJEEE.17.1.1775

Jafar Fatemi-Nasab, S. Jarchi, A. Keshtkar

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Abstract

In this study, a radiation pattern reconfigurable microstrip antenna is designed and fabricated. The antenna’s radiation pattern is directed in 9 different angles by employing a radiating patch and embedding complementary split ring resonators (CSRR) on the ground plane. The radiating patch is of circular shape, while for CSRR elements both circular and rectangular shapes are investigated. The antenna is excited through coaxial feed. There are four CSRR cells on the ground plane. With applying slots on CSRR’s arms and loading them by pin diodes, variable length CSRRs are obtained which result in radiation pattern reconfigurable property. Radiation characteristics of the antenna versus different switching modes of pin diodes are investigated and illustrated. The proposed antenna is also compact. The designed antenna was fabricated on FR4 substrate with thickness of 1.6 mm, and measurement results are provided. The results demonstrate that the presented antenna has impedance bandwidth of 2.39-2.47 GHz with a gain of more than 7 dBi.

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互补裂环谐振器对辐射方向图可重构圆形微带天线的影响

本文设计并制作了一种辐射方向图可重构微带天线。通过采用辐射贴片并在接地平面上嵌入互补分裂环谐振器（CSRR），天线的辐射方向图被引导到9个不同的角度。辐射片是圆形的，而对于CSRR单元，研究了圆形和矩形的辐射片。天线是通过同轴馈电激励的。地平面上有四个CSRR单元。通过在CSRR的臂上施加槽并用pin二极管加载，获得了可变长度的CSRR，这导致了辐射方向图的可重构性。研究并举例说明了天线对pin二极管不同开关模式的辐射特性。所提出的天线也很紧凑。设计的天线是在厚度为1.6mm的FR4基板上制作的，并提供了测量结果。结果表明，该天线的阻抗带宽为2.39-2.47GHz，增益大于7dBi。

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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