宽频小型化U形槽微带天线  

Wideband Miniature U-slot Microstrip Antenna

作　　者：杨放[1] 叶鸣 谢拥军 YANG Fang;YE Ming;XIE Yongjun(School of Information and Control engineering,Xi'an University of architecture and technology,Xi'an 710055,China)

机构地区：[1]西安建筑科技大学信息与控制工程学院,陕西西安710055

出　　处：《探测与控制学报》2024年第3期100-104,共5页Journal of Detection & Control

基　　金：国家自然科学基金项目(62271382)。

摘　　要：针对微带贴片天线宽带化和小型化的设计需求,提出并设计了一种工作在S/C波段的改进的U形槽微带贴片天线。通过在辐射贴片中心开曲折U形槽,使缝隙和馈电探针偏离贴片中心,形成非对称曲折U形槽的层叠介质微带贴片天线。通过共面容性耦合馈电进一步提高天线的阻抗带宽。实测结果表明:该天线在3.11~5.40 GHz频率范围内回波损耗小于-10 dB,相对带宽可达53.8%,与仿真结果吻合,可为微带天线的小型化、宽带化设计提供参考。To achieve a wide bandwidth and miniaturization of microstrip patch antennas,a modified U-slot microstrip patch antenna operating at S/C band was presented in this paper.By embedding a meandered U-shaped slot at the center of a rectangular radiating patch and then deviating the slot and the feeding probe from the patch center,a dissymmetric meandered U-slot microstrip patch antenna with a stacked substrate was obtained,in which the coplanar capacitive coupling feeding method was taken to further widen its impedance bandwidth.Measurement results showed that within 3.11~5.40 GHz,the return loss of the antenna was lower than-10 dB,with a relative impedance bandwidth of 53.8%,as agreed well with simulation results.The radiating patch had a radiating patch area of 0.426λ0×0.326λ0,λ0 was the wavelength of the central frequency of the antenna.

关 键 词：微带贴片天线 U形缝隙 宽带 小型化 

分 类 号：TN820[电子电信—信息与通信工程]