一种用于X波段的共形相控阵天线  

A Conformal Phased Array antenna for X-band

作　　者：卫晓俊 姜文[1] 龚书喜[1] Wei Xiaojun;Jiang Wen;Gong Shuxi(Science and Technology on Antenna and Microwave Lab,Xidian Univ,Xi'an 710071)

机构地区：[1]西安电子科技大学天线与微波技术重点实验室,陕西西安710071

出　　处：《测控与通信》2019年第4期30-33,共4页

摘　　要：本文提出了1种用于X波段的宽角扫描相控阵天线,该天线共形在圆锥和圆柱栽体上。阵列所采用的的单元是1种微带贴片天线,通过引入寄生贴片,产生了1个新的谐振点,同时采用电容耦合馈电来拓展带宽,使得共形单元能够在7.62~12.45 GHz频段内实现S11<-10 dB(相对带宽为48%)。利用所设计的共形单元构成锥面和柱面共形相控阵天线,该天线包含4个间隔90°的子阵列,每个子阵列可以实现13^∞≤θ≤137范围内的波束扫描覆盖。该阵列结构可以使天线波束在水平方向上切换,这种结构方案适用于旋转平台使用。In this paper,a wide-angle scanning phased array antenna for X-band is proposed,which is conformed on a cone and a cylindrical carrier.By introducing a parasitic patch on the cylindrically and conically conformed microstrip antenna element,a new resonance point is appeared.At the same time,a capacitively coupled feed is used to expand the impedance bandwidth,so that the conformal element can realize a wide impedance bandwidth ranged from 7.62-12.45 GHz with Su<-10dB(the relative bandwidth is 48%).Cylindrically and conically conformed microstrip antenna elements are used to construct cylindrical conformal and conical conformal arrays,which consist of four linear subarrays angularly spaced by 90°,and each subarray can achieve beam scanning in 13^∞≤θ≤137 regions.The proposed array architecture has been selected and designed to allow switching the antenna beam in the transverse plane,this solution is very attractive for the spinning platform.

关 键 词：宽带微带贴片天线 共形天线 相控阵天线 宽角扫描 

分 类 号：TN8[电子电信—信息与通信工程]