电小尺寸锥台上双馈圆极化共形微带天线阵设计  

Design of doubly-fed circular polarized conformal microstrip antenna array on electrically small cone frustum

作　　者：吴峻岩 于家傲[1] 姜永金[1] 陶琴 WU Junyan;YU Jiaao;JIANG Yongjin;TAO Qin(Air Force Early Warning Academy,Wuhan 430019,China;Unit 94639 of PLA,Nanjing 211599,China)

机构地区：[1]空军预警学院,湖北武汉430019 [2]中国人民解放军94639部队,江苏南京211599

出　　处：《现代电子技术》2019年第23期17-21,25,共6页Modern Electronics Technique

摘　　要：在电小尺寸锥台上,设计并实现一款锥台共形水平全向双馈圆极化微带天线阵。该天线的工作频率覆盖GPS L1频点(1.575 GHz)和北斗导航系统B1频点(1.562 GHz)。基于HFSS软件仿真,分析了锥台共形对天线阵单元的S11、轴比和增益等参数带来的影响,通过调整辐射贴片尺寸,减小了锥台共形对天线的影响,改善了圆极化性能,提高了天线的圆极化增益。加工天线阵并进行测试,测试结果表明,该天线阵在1.55~1.60 GHz频段内,S11参数≤-10 dB,在GPS L1频点和北斗B1频点,水平全向增益最大值达到了1.73 dB,1.25 dB,增益不圆度≤2.5 dB,实测结果表明该天线具有良好的水平全向圆极化辐射性能。A conformal horizontal omnidirectional doubly-fed circular polarized microstrip antenna array was designed and implemented on the electrically small cone frustum. The operating frequency of the antenna covers GPS′s L1 frequency(1.575 GHz)and Beidou navigation system′ s B1 frequency(1.562 GHz). The influence of cone frustum conformation on antenna array unit parameters,sush as S11,axial ratio and gain is analyzed by means of the HFSS software simulation. By adjusting the size of the radiation patch,the influence of cone frustum conformation on antenna is reduced,the circular polarization performance is improved and the circular polarization gain of the antenna is increased. The antenna array was fabricated and measured. The result shows that the parameter S11 of the antenna array is ≤-10 dB in the 1.55~1.60 GHz frequency band,the maximum value of horizontal omnidirectional gain reaches 1.73 dB and 1.25 dB respectively,and the out-of-roundness of the gain is ≤2.5 dB at the GPS L1 frequency and the Beidou B1 frequency. The above results show that the antenna has a good horizontal omnidirectional circular polarization radiation performance.

关 键 词：电小尺寸 双馈天线 圆极化 导航天线 共形微带天线 HFSS仿真 

分 类 号：TN820.11-34[电子电信—信息与通信工程]