基于SIW的多波束波导缝隙阵列天线设计

Design of Multi-Beam Waveguide Slot Array Antenna Based on SIW

基片集成波导(SIW)是一种新型的波导结构,具有低插损、高Q值、易于加工和设计等优点,在雷达、通信和导航等领域有很好的应用价值。本文应用SIW技术设计与仿真了一个Ku波段基于Butler矩阵馈电网络的多波束波导缝隙阵列天线。仿真结果表明该天线通过俯仰维实现同时4波束,提供±45o覆盖,具有良好的方向图和驻波特性。它采用一体化设计方式,大大减轻阵列天线重量和减小尺寸,具有较高的工程实用性。

Substrate integrated waveguide （SIW） is a new type of waveguide structure, which has advantages such as low insertion loss, high Q value and easy to process and design, it has good application potential in the fields of radar, communication, navigation etc. A Ku-band multi-beam slot array antenna based on Butler matrix feed network is designed by using of SIW technology ; simulation results show that synchronous four-beam in elevation which can cover ＋ 45 ° （in elevation） are achieved, and excellent pattern and voltage standing wave ratio （VSWR） performance are obtained. Moreover by using of integrated design, weight and dimensions of the array antenna are both decreased significantly; it has high practicability in engineering application.