具有高选择性和谐波抑制的滤波天线设计  

Design of A Filtering Antenna with High Selectivity and Harmonic Suppression

作　　者：诸葛琪皓 张文梅[1] 马润波[1] 陈新伟[1] ZHUGE Qihao;ZHANG Wenmei;MA Runbo;CHEN Xinwei(College of Physics and Electronic Engineering,Shanxi University,Taiyuan 030006,China)

机构地区：[1]山西大学物理电子工程学院,山西太原030006

出　　处：《测试技术学报》2022年第6期537-542,共6页Journal of Test and Measurement Technology

基　　金：国家自然科学基金资助项目(62071282);山西省自然科学基金资助项目(201901D111026,201901D111027);山西省留学基金资助项目(2021-006)。

摘　　要：设计了一款同时具有高选择性和谐波抑制的滤波天线.通过在正方形微带贴片上蚀刻1对缝隙和在地面上引入两口环DGS,引入2个辐射零点,提高了选择性;通过在接地板上蚀刻2个哑铃型DGS和在馈线上加载1个圆头形开路短截线,谐波抑制达到了12 GHz(4.8 f_(0)).测试结果表明,设计滤波天线工作通带为2.34 GHz~2.42 GHz,在2.28 GHz和2.70 GHz处有两个辐射零点,在3 GHz~12 GHz间的反射系数均大于-4 dB.In this paper,a filtering antenna with harmonic suppression and high selectivity is designed.Two slits are etched on the square microstrip patch and a split ring defected ground structure(DGS)is etched on the ground,which introduces two radiation nulls and improves the selectivity of filtering antenna.By etching two dumbbell-shaped DGS on the ground plate and loading a circle stub on the feeder,the harmonic was suppressed even up to 12 GHz(4.8 f_(0)).The measured results show that the designed filtering antenna works at 2.34 GHz~2.42 GHz,with two radiation nulls at 2.28 GHz and 2.70 GHz and the reflection coefficients are more than-4 dB from 3 GHz to 12 GHz.

关 键 词：缺地陷结构 谐波抑制 辐射零点 滤波天线 

分 类 号：TN822[电子电信—信息与通信工程]