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设计了一款双频宽带定向辐射天线,该天线以最基本电磁偶极子为基本模型,采用Г型金属探针进行馈电,通过增加金属反射板实现定向辐射,并拓展低频带宽实现双频宽带。根据仿真结果,对天线模型进行了加工并测试。仿真和测试结果表明,天线在0.75~0.98GHz及1.6~2.77GHz频段上反射系数小于-10d B,同时在0.75~0.98GHz增益大于7d Bi,1.6~2.77GHz增益大于6d Bi。该天线具有多频带、定向辐射等优点,在无线通信系统中可以被广泛使用。
A dual frequency broadband directional radiation antenna is designed. The basic electromagnetic dipole is used as the basic model. The antenna is fed with Г type metal probe. Directional radiation is increased by adding a metal reflector, and the low frequency bandwidth is extended to dual frequency Broadband. According to the simulation results, the antenna model was processed and tested. Simulation and test results show that the antenna has a reflection coefficient of less than -10d B at 0.75-0.98GHz and 1.6-2.77GHz, a gain of more than 7d Bi at 0.75-0.98GHz, and a gain of more than 6d Bi at 1.6-2.77GHz. The antenna has the advantages of multi-band, directional radiation and the like, and can be widely used in wireless communication systems.