一种宽带棱台形介质谐振器天线的设计与研究  

Design and Research of a Wideband Prismatic Dielectric Resonator Antenna

作　　者：薛敬宏 何露茜 宋立众 姚国国[2,3] 霍纪兵 Xue Jinghong;He Luxi;Song Lizhong;Yao Guoguo;Huo Jibing(School of Information and Electrical Engineering,Harbin Institute of Technology at Weihai,Weihai 264209,China;China Airborne Missile Academy,Luoyang 471009,China;Aviation Key Laboratory of Science and Technology on Airborne Guided Weapons,Luoyang 471009,China)

机构地区：[1]哈尔滨工业大学(威海),信息与电气工程学院,山东威海264209 [2]中国空空导弹研究院,河南洛阳471009 [3]航空制导武器航空科技重点实验室,河南洛阳471009

出　　处：《航空兵器》2018年第6期72-77,共6页Aero Weaponry

基　　金：航空科学基金项目(20160177005);哈尔滨工业大学(威海)教育教学改革研究项目(BK201610).

摘　　要：本文研究了一种棱台形介质谐振器天线。该天线使用棱台形的介质谐振器作为辐射体。天线的馈电方式采用同轴探针馈电,探针连接在介质谐振器附有的梯形金属枝节上,梯形金属枝节用来实现阻抗匹配。通过设计介质谐振器与梯形枝节的结构参数,实现了预期的性能要求。采用全波电磁仿真技术对该双极化天线结构进行电磁仿真和优化设计,仿真结果表明,在3.5～5. 5 GHz工作频率范围内,设计的介质谐振器天线的电压驻波比小于2;在中心频点上交叉极化电平低于-70 dB,在E面和H面上的波束宽度均大于90°。对设计的天线进行加工测试,测试结果表明,该天线实现了预期的辐射性能,验证了该介质谐振器天线设计的有效性。A kind of a prismatic dielectric resonator antenna fed by coaxial probe which uses a prismatic dielectric resonator as a radiator is researched.The coaxial probe is connected to the trapezoidal metal branches attached to the dielectric resonator,and the trapezoidal metal branches are used to achieve impedance matching.The expected performance requirements are achieved by designing the structural parameters of the dielectric resonators and the trapezoidal branches.The electromagnetic simulation and optimization design of the proposed antenna are carried out by using the full wave electromagnetic simulation technique.The simulation results show that the voltage standing wave ratio(VSWR)are less than 2 within the frequency range of 3.5~5.5 GHz.At the center frequency,the cross-polarization levels are lower than-70 dB and the beam width at E-plane and H-plane are more than 90°.The designed antenna is fabricated and measured.The measurement results indicate that the designed antenna achieves anticipated radiation performances and the design effectiveness is proved.

关 键 词：宽带天线 介质谐振器天线 辐射方向图 电压驻波比 

分 类 号：TJ765[兵器科学与技术—武器系统与运用工程] TN82[电子电信—信息与通信工程]