一种H型缝隙和L型探针耦合双极化微带天线的设计  

Design of dual polarized microstrip antenna with H-shaped aperture and L-probed coupled

作　　者：丁卫平[1] 罗康[2] 丁康[2] 石树杰 

机构地区：[1]解放军理工大学通信工程学院光电技术教研中心,江苏南京210007 [2]解放军理工大学通信工程学院研究生2队,江苏南京210007 [3]解放军理工大学通信工程学院研究生1队,江苏南京210007

出　　处：《电波科学学报》2013年第6期1169-1172,共4页Chinese Journal of Radio Science

基　　金：国家自然科学基金(No.61271103)

摘　　要：设计了一种宽带、低交叉极化、高隔离度的双极化微带天线结构,采用L型探针耦合和H型缝隙耦合两种方式相结合,结构简单.天线设计频率为2.4GHz,两端口-10dB阻抗带宽达到26.7%和30%,隔离度在整个带宽内低于-32dB、交叉极化电平在60°方位角内低于-24dB、在主瓣内低于-32dB,理论仿真和实验测试结果吻合较好.A simple technique to design dual feed dual linearly polarized circular microstrip patch antenna with broad bandwidth, low cross polarization and high isolation is presented. Two different feed mechanisms are designed to excite a dual orthogonal linearly polarized mode from a single radiating patch for the operated frequency band at 2. 4 GHz. The proposed design has a wide impedance bandwidth （26. 7°for Port 1 and 30°for Port 2） and also its two input port isolation is found to be as low as -32 dB. Good broadside radiation patterns with low cross polarizations（less than -24 dB） are observed in the two principal planes. It is found that the measured results are in good agreement with simulation analysis.

关 键 词：双极化天线 宽频带 低交叉极化 高隔离度 

分 类 号：TN011[电子电信—物理电子学]