一种低剖面带状线结构的一体化阵列天线设计

An Integrative Design of Low-profile Stripline Array Antenna

基于阵列天线小型化的设计需求,设计了一种低剖面带状线结构的一体化阵列天线。天线采用带状线结构,利用两排均匀分布的金属化通孔充当带状线之间的金属隔离墙,并通过对双面印刷偶极子天线、馈电网络以及监测网络的一体化设计来实现的一款低剖面阵列天线。天线高度仅70 mm,满足在C波段18%的相对带宽内获得-28 dB的低副瓣性能。该一体化阵列天线具有结构紧凑、重量轻、可靠性强和监测功能等优点,便于和有源器件集成。同时,该天线满足实际使用要求,其设计思路和设计方法具有很好的可扩展性。

Based on the design requirement of array antenna miniaturization,a low-profile stripline integrative array is designed in the paper.The low-profile stripline array is realized by using two rows of evenly distributed through-holes as metal isolation wall between striplines and by the integrative design of the double-faced printed dipole antenna,feeding network,and monitoring network.On the basis of achieving a very low level of sidelobe of-7 d B in the operating band,the height of antenna is only 70 mm.The integrative array antenna facilitates the integration with the active components featuring compact structure,light weight,high reliability and monitor function.At the same time,the antenna meets the requirements of the practical application,and its design idea and method are of great expansibility.