【摘要】 基于新型（1-x）Zn₂SiO₄-x Li₂TiO₃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。更多还原

【Abstract】 Based on the new（1-x）Zn₂SiO₄-x Li₂TiO₃ 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.更多还原