Left-Handed Effect of Composite Rectangular SRRs and Its Application in Patch Antennae

• 作者: 周跃群 沈廷根 黄明
• 来源期刊: 中国物理快报(英文版)
• 学科: 工学
• 关键词: 矩形贴片天线 复合材料 左手材料 补丁 量表 有限差分时域法 应用 等效介电常数
• 年，卷（期）: 2010,（1）
• 页码范围: 118-120
• 页数: 3页
• 分类号: TN823 TB33
• 语种: 英文

摘要

We concentrate on describing the important influence and physical law of the split resonant ring (SRR) based left-handed materials on patch antennae. The finite-difference time-domain method, together with the finite element method is used to study the characteristics of patch antennae based on composite rectangular SRRs. A novel composite rectangular SRR system is formed by assembling the conventional patch antennae and SRRs, it is found that electromagnetic wave resonance occurs near f=3.15GHz, the equivalent permittivity and permeability are both negative, and the electromagnetic wave's tunnel effect and evanescent waves' enhancing effect are formed, which can improve the localization extent of electromagnetic wave's energy apparently. Such effects can improve the antenna's radiation gain and its matching condition. The phenomenon indicates that such composite rectangular patch antennae are promising in wireless communications such as mobile phones, satellite communication and aviation.