新型电控可重构天线阵全向单元设计

A Novel Unit of Reconfigurable Antenna Array

该文提出了一种性能良好的新型方向图可重构天线阵全向印刷单元天线。该天线由两对半波振子背靠背印刷在介质板上构成,结构简单紧凑。相对带宽达50%(VSWR<2),在工作频带内,增益6.44dBi,不圆度小于2.0dB。文中给出了仿真设计结果和实测的电参数数据,两者有较好地一致性。本天线适用于WiMax(802.16)终端及WLAN基站或中继站天线。

A novel wideband omnidirectioanl planar antenna comprised two back-to-back dipoles printed on a dielectric substrate which use as unit of pattern reconfigurable antenna array is presented.The presented antenna shows a wide impedance bandwidth about 50% （VSWR2）,and a stable antenna gain level of about 6.44 dBi,with small variations（ δ 2.0 dB） for omnidirectional radiation,is obtained across the used bandwidth.Details of antenna design and experimental results are proposed,and compared with excellent agreement.A constructed prototype is suitable for WiMax（802.16） application fixed and mobile solutions ,as well as base or relay stations for WLAN operation or mobile communications.