一种波束上翘的全向偶极子天线

An Omnidirectional Dipole Antenna with Upturned Beam

提出了一种波束上翘的全向偶极子天线。通过偶极子天线的上下振子不对称设计,使得上振子获得较强的电流分布,实现全向天线波束的上翘;通过扼流套和馈电调节器形成的巴伦结构,保证了平衡馈电且不受安装环境影响;同时,通过馈电调节器在扼流套上的合理位置的选择,使得偶极子天线在工作频段内具有相同的上翘角度。对天线模型进行了仿真设计和实物加工测试,获得了2.8 GHz~3.4GHz频段范围的15°波束上翘角,增益值大于2dBi且在仰角0~30°范围内增益值大于1.5dBi,电压驻波比(VSWR)不大于1.5。

In this paper,an omnidirectional dipole antenna with tilted beam is proposed.Through the asym-metric design'of the dipole antenna,the upper oscillator obtains a strong curent distribution and realizes the up-ward warping of the omnidirectional antenna beam.Through the balun structure formed by the choke sleeve and feed regulator,the balanced feed is guaranteed without the installation environment.At the same time,through the selection of the reasonable position of the feed regulator on the choke sleeve,the dipole antenna has the same tilted angle in the operating frequency band.Simulation design and physical machining test of the an-tenna model have been carried out,and a 15°tilted beam angle in the range of 2.8GHz~3.4GHz band has been obtained.The gain value is greater than 1.5dBi in the elevation range of 0~30°,and the VSWR is less than 1.5 and the gain value is greater than 2dBi.