摘要
设计了一种新型宽带高增益水平全向天线。对带寄生单元的宽带对称偶极子单元天线采用杆状设计,缩小了水平面尺寸,拓展了波束宽度;通过宽波束单元天线的背对背放置实现了天线的水平面全向辐射,并调整辐射振子与寄生振子的尺寸及相对位置以获得较好的水平面不圆度;对两组全向天线在垂直面组阵进一步提高了天线的增益。综合考虑天线电压驻波比、水平面不圆度、增益和尺寸等因素,确定了天线参数并加工实物进行了调试、测试。实测结果表明该天线在550~700MHz的电压驻波比小于2（相对带宽24%）,增益大于5d Bi,水平面不圆度小于2 d B。另外,该天线具有结构简洁,易于加工生产的优点。
A novel horizontal omni-directional antenna is presented with wideband and high-gain. The wideband dipole antenna with parasitic element is designed as rod-shaped of diminished dimension in horizontal plane for beamwidth enhancing. The omni-directional radiation pattern is obtained by back-to-back placing of the double broadbeam antenna elements with well un-roundness performance achieved by adjusting size and relative position of the radiated elements. Double omni-directional antennas are configurated as antenna array in E plane for gain enhancing. The antenna parameters are optimized with VSWR, un-roundness, gain and antenna dimension comprehensive consideration. The measured result show that the proposed antenna has well impedance bandwidth in 550~700MHz of VSWR less than 2（relative bandwidth of 24%） with gain larger than 5 d Bi and horizontal un-roundness less than 2d B. In addition, the proposed antenna has simple structure for easily manufacture.
出处
《通信对抗》
2014年第4期56-59,共4页
Communication Countermeasures
关键词
水平全向天线
宽频带
高增益
不圆度
Horizontal omni-directional antenna
wideband
high gain
un-roundness
