一种超宽带平面螺旋天线的设计  

Design of an Ultra-wideband Broadband Integrated Planar Spiral Antenna

作　　者：崔景波[1] 徐风清[1] 

机构地区：[1]中国电子科技集团公司第三十六研究所,浙江嘉兴314033

出　　处：《通信对抗》2013年第4期35-37,42,共4页Communication Countermeasures

摘　　要：采用阿基米德天线作为辐射体，设计了一种超宽带平面螺旋天线。天线采用锥形阻抗变换器进行阻抗匹配，通过优化反射腔尺寸拓展方向图带宽。天线的工作频段为200-1200MHz，带宽达到6：1，在全频段内驻波比不大于2，在整个频段范围内平均增益为6．6dB，轴比小于3dB，波束宽度大于70度，前后比大于13dB，高度仅为100mm。In this paper,a kind of ultra-wideband antenna is designed which used Achimedean antenna as a ra- diator.The antenna impedance matched with a tapered impedance ,broadband radiation pattern is achieved by optimize the reflector cavity.The operating band of the antenna for 200MHz to 1200MHz ,bandwidth is 6：1, achieved the emphases band＇s integrated design,the antenna in the band VSWR≤ 2,the average gain is more than 6.6dB cover the entire frequency range,axial ratio less than 3dB,beam width is greater than 70 degress, front-to-back ratio greater than 13dB,cross-section of only 100ram.

关 键 词：阿基米德天线 超宽带 锥形阻抗变换器 低剖面 

分 类 号：TN823.31[电子电信—信息与通信工程]