一种宽带高增益全向天线的设计与实现  

Design and implementation of a broadband high-gainomnidirectional antenna

作　　者：王亮 WANG Liang(China Communications System Co.,Ltd.Hebei Branch,Shijiazhuang Hebei 050081,China)

机构地区：[1]中华通信系统有限责任公司河北分公司,河北石家庄050081

出　　处：《河北省科学院学报》2024年第2期55-58,67,共5页Journal of The Hebei Academy of Sciences

摘　　要：针对通信设备宽频带信号传输过程中,信号强度弱无法完成远距离传输、天线设备形式复杂、体积大等问题,本文提出了一种高增益印刷对称振子全向天线。天线两对辐射振子片分别位于印制板两面,通过带有匹配枝节的微带传输线馈电网络将两对辐射振子进行组阵。设计采用金属化过孔连接了电缆的内芯,将电缆金属外皮另一侧的辐射片焊接在一起,通过这种方式来对天线进行馈电。天线设备形式简单,体积小,既改善了天线的阻抗匹配,又有效的提高了天线增益,使得天线在宽频带内实现了全向辐射,相对带宽达到54.77%,且在带内增益大于3 dB,水平面方向图的不圆度小于2.2 dB。经过实际验证,该天线能够满足所设应用场景。Addressing issues such as weak signal strength that prevents long-distance transmission during the broadband signal transmission of communication devices,complex antenna equipment forms,and large volumes,a high-gain printed symmetrical oscillator omnidirectional antenna is proposed.The two pairs of radiation oscillators of the antenna are located on both sides of the printed circuit board.The two pairs of radiation oscillators are arrayed by a microstrip transmission line feed network with matching branches.The metallized vias are used to connect the inner core of the cable,and the radiation plates on the other side of the metal skin of the cable are welded together.By feeding the antenna in this way,the impedance matching of the antenna is improved,and the antenna gain is effectively enhanced.This enables the antenna to achieve omnidirectional radiation characteristic within the required bandwidth,with a relative bandwidth of 54.77%,and an realized gain greater than 3 dB,the band and horizontal plane circularity less than 2.2 dB.After practical verification,the antenna can meet the set application scenarios.

关 键 词：全向天线 高增益 宽带 

分 类 号：TN82[电子电信—信息与通信工程]