基于复合左右手传输线结构的小型天线  

Small antenna based on composite right/left-handed(CRLH)transmission line structure

作　　者：齐本胜[1] 施君娟 赵盼[1] 

机构地区：[1]河海大学物联网工程学院,江苏常州213022

出　　处：《电子元件与材料》2015年第3期42-44,48,共4页Electronic Components And Materials

摘　　要：通过将天线谐振在零阶模式,以及在地平面增加细长线的方法设计了一款基于复合左右手传输线的小型天线,并利用仿真软件CST对该天线的特性进行了仿真验证。结果表明：天线的物理尺寸仅为23 mm×21 mm×1.8mm（0.188λ0×0.171λ0×0.015λ0）,天线的零阶谐振频率为2.448 GHz,–10 d B回波损耗阻抗带宽达97.8 MHz,相对带宽达到4.0%,最大增益为2.451 d Bi。所设计的天线具有尺寸小,结构简单、频带宽,增益高等优点,能够满足无线局域网（2.4~2.483 5 GHz）的要求,有广阔的应用前景。A compact antenna based on composite right/left-handed transmission line structure was designed, and realized by adjusting resonance of the antenna to be in zero order mode and adding a slender line on the ground plane. Simulation was performed for the characteristics of the antenna with the software CST. The simulation results show that when the physical size of antenna is 23 min×21 min× 1.8 mm （0.188λ×00.171λ0 ×0.015λ0）, the zero-order resonance frequency of antenna is 2.448 GHz, -10 dB return loss impedance bandwidth is 97.8 MHz, relative bandwidth is 4.0%, and the largest gain can achieve 2.451 dBi. The designed antenna has the advantages of a small size, simple structure, wide bandwidth and high gain, which could meet the requirements of the wireless local area network （2.4-2.4835 GHz） , and has a further applications.

关 键 词：复合左右手传输线 小型 天线 CST仿真 零阶谐振 高增益 

分 类 号：TN826[电子电信—信息与通信工程]