新型电控可重构天线阵全向单元设计ANovelUnitof-电子与信息学报.PDF

第 32 卷第 3 期 电 子 与 信 息 学 报 Vol.32No.3 2010 年 3 月 Journal of Electronics Information Technology Mar.2010 新型电控可重构天线阵全向单元设计 吕 源①② 沈学民①② 刘会杰② 龚文斌② ①(中国科学院上海技术物理研究所 上海 200083) ②(上海微小卫星工程中心 上海 200050) 摘 要：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%(VSWR2)，在工作频带内，增益 6.44 dBi，不圆度小于 2.0 dB。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。 关键词：可重构天线；全向天线；宽频带；不圆度 中图分类号：TN82 文献标识码：A 文章编号：1009-5896(2010)03-0742-05 DOI:10.3724/SP.J.1146.2009.00198 A Novel Unit of Reconfigurable Antenna Array ①② ①② ② ② Lü Yuan Sheng Xue-min Liu Hui-jie Gong Wen-bin ① (Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China) ② (Shanghai Engineering Center for Microsatellites, Shanghai 200050, China) Abstract: 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. Key words: Reconfigurable antenna; Omnidirectional antenna; Wideban