【摘要】 采用了一种新的设计来减小传统谐振式四臂螺旋天线的尺寸。其馈电单元的面积比传统四臂螺旋天线的尺寸缩小了50%左右,而且不需要隔离电阻。给出了这种天线的设计方法,采用有限元(FEM)方法分析了对螺旋参数的影响,同时给出了仿真及测试结果,实测的圆极化轴比3 dB波束宽度达到了171°。计算结果和测试数据比较吻合,证明了此设计的有效性。更多还原

【Abstract】 A new design is used to reduce the size of the traditional Printed resonant Quadrifilar Helix Antenna(PQHA) so that the area of the feed network is reduced by 50% and the isolation resistor isn’t needed.The effect of helix parameters on the performances is analyzed and then the design is presented.The agreement between the simulated and measured results and a 3 dB axial ratio beamwidth of 171° are achieved,confirming the validity of the design.更多还原