X波段高增益圆柱形介质谐振器天线的设计  

Design of an X-band High Gain Cylindrical Dielectric Resonator Antenna

作　　者：王萍 李小强 于云飞[1] 李永卿[1] 王群[1] Wang Ping;Li Xiaoqiang;Yu Yunfei;Li Yongqing;Wang Qun

机构地区：[1]北京工业大学材料与制造学部

出　　处：《安全与电磁兼容》2023年第4期48-53,59,共7页Safety & EMC

摘　　要：基于新型(1-x)Zn_(2)SiO_(4)-xLi_(2)TiO_(3)微波介质陶瓷材料,设计了一种工作在X波段的圆柱形介质谐振器天线(DRA)。该天线采用微带-缝隙耦合方式进行馈电,通过增加矩形环状缝隙产生新谐振点的方法增加阻抗带宽,将微带线枝节改为T字形调节阻抗匹配。仿真结果显示,在工作频段10.34~11.18 GHz范围内,阻抗带宽为820 MHz,频带内驻波比(VSWR)小于2,带内平均增益大于8.62 dBi,最高增益可达10.73 dBi,天线方向性良好。天线的整体性能优异且结构简单,可应用在广播卫星、地球探测卫星、气象卫星等领域。Based on the new(1-x)Zn_(2)SiO_(4)-xLi_(2)TiO_(3) microwave dielectric ceramic material,a cylindrical dielectric resonator antenna(DRA)operating in the X-band is designed.The microstrip-slot coupling feeding mode is adopted in the DRA.The impedance bandwidth of the antenna is increased by adding a rectangular annular slot to generate a new resonance point,and the microstrip line branch is changed into a T shape to adjust the impedance matching.The simulation results show that,the operating frequency band is 10.34~11.18 GHz,the impedance bandwidth is up to 820 MHz,and the standing wave ratio(VSWR)within the band is less than 2.The average gain within the band is higher than 8.62 dBi,in which the maximum gain of the band is up to 10.73 dBi,and the antenna has good directivity.The antenna not only possesses a simple structure but also shows excellent performance,and can be applied in broadcast satellites,earth exploration satellites,meteorological satellites and other fields.

关 键 词：介质谐振器天线 微波介质陶瓷 高增益 X波段 

分 类 号：TN820[电子电信—信息与通信工程] TN751.2