摘要
基于复合右左手传输线的非线性相移特性,提出了一种左手加载的共面波导激励槽环天线。该天线由四个简化的复合左右手传输线结构单元构成,通过调整单元的并联电感值,可以改变天线的谐振频率和输入阻抗,利用仿真方法分析了天线的性能。结果表明,相比于传统天线,新天线尺寸减小了30.25%,总辐射效率达到98.34%,同时交叉极化比提高了2.9 dB。
Based on the characteristic of nonlinear phase shift of composite right/left-handed transmission lines （CRLH TL）, a coplanar waveguide-fed slot-loop antenna with left-handed loading was presented. The antenna consist of four simplified structure units of CRLH TL, the resonant frequency and input impedance of the antenna could be changed by adjusting the shunt inductance value of units. Simulating methods were applied to analyze the performance of the antenna. Results show that compared to a conventional antenna, the antenna size is reduced by 30.25%, the antenna radiation efficiency arrives 98.34%, and the cross-polarization ratio is also increased by 2.9 dB.
出处
《电子元件与材料》
CAS
CSCD
北大核心
2012年第7期37-39,42,共4页
Electronic Components And Materials
基金
国家自然科学基金资助项目(No.61071018)
关键词
共面波导槽环天线
复合左右手传输线
左手加载
coplanar waveguide-fed slot-loop antenna
composite right/left-handed transmission line
left-handed loading
