【作者】 孙鑫；

【Author】 SUN XIN;School of Physical Electronics of University of Electronic Science and Technology of China;

【机构】 电子科技大学物理电子学院；

【摘要】 为满足第三代卫星移动通信系统3G技术的需求,给出了一种高增益宽波束四臂螺旋天线的设计方法。通过套筒巴伦实现平衡馈电,并利用四臂螺旋自身的结构特点构造了90°自相移结构,获得了较好的圆极化特性。采用CST软件进行仿真及优化设计,结果表明,天线可同时工作于上行1980-2010MHz和下行2170-2200MHz两个频段,实现了发射与接收一体。另外天线的3d B波束宽度分别达到180°和95°。更多还原

【Abstract】 The antennas used for the system 3 G technology of Mobile satellite communication usually are requested to provide High Gain,wide beam and circular polarization. To fulfill that need,we have designed of a quadrifilar helix Antenna. The antenna is fed by sleeve balun and used 90°self-phased structure. We simulated the antenna with the software of CST. The results show that the antenna can work in about uplink 1980-2010 MHz and downlink 2170-2200 MHz two frequencies at same time and get the emitting and receiving. The 3 dB of respective beam are 180°and 95°.更多还原