基于T型谐振器的抗干扰矩形波导缝隙阵列天线设计

Design of anti-interference rectangular waveguide slot array antenna based on T-shaped resonators

介绍了一种抗干扰矩形波导缝隙阵列天线的设计方法,仿真、设计并加工了一款基于T型谐振器的四缝隙矩形波导缝隙阵列天线.通过在矩形波导下壁引入周期性的T型谐振器,有效提升了天线的抗干扰能力.测试结果表明,该天线的-10 dB阻抗带宽为10.3%(5.5~6.1 GHz),增益为11.5~12.8 dBi,天线效率为72.1%~87.3%.与传统矩形波导缝隙阵列天线相比较,本文设计天线在抑制频段7.9~9.6 GHz的抗干扰能力提升了32.2~69.3 dB,适用于多频段、多任务的无线通信、雷达系统等.

An anti-interference rectangular waveguide slot array antenna is presented in this paper.The antiinterference performance of the antenna is improved by periodically loading a row of T-shaped resonators at the bottom broad wall of the rectangular waveguide.A four-slot rectangular waveguide slot array antenna based on T-shaped resonators is simulated,designed and fabricated.The measured results show that the impedance bandwidth is 10.3%(5.5-6.1 GHz)with realized gains of 11.5-12.8 dBi and antenna efficiency of 72.1%-87.3%.Compared with a traditional rectangular waveguide slot array antenna,the anti-interference ability of the proposed antenna is improved by32.2-69.3 dB in the suppression band of 7.9-9.6 GHz,so it is suitable for multi-band and multi-task wireless communication and radar systems.