基于FSS覆层的高增益稀疏阵列天线设计

• 作 者: 马遥 郭陈江 丁君 袁振 张甲楷
• 机 构: 西北工业大学电子信息学院,
• 出 处: 微波学报
• 发表日期: 2014年04期
• 关键词: EBG resonator antenna FSS high gain sparse array grating lobe suppression

设计了一种基于FSS覆层的高增益EBG谐振天线。设计了一种在预定频段内谐振的FSS单元,作为覆层加载到微带贴片天线上方。仿真结果显示,在5GHz频点,加载覆层的天线增益为11.43dB。接着,还研究了FSS覆层在稀疏阵列中的应用,在这个结构中,采用一个2×2的阵元间距较大的天线阵作为馈源。对该结构进行加工和测试,结果显示天线阵增益为18.54dB。同时,阵列在E面和H面的副瓣分别为-9.17dB和-12.04dB,避免了栅瓣的产生。

A high gain EBG resonant antenna based on FSS cladding is designed. An FSS cell resonating in a predetermined frequency band was designed and applied as a cladding onto the microstrip patch antenna. The simulation results show that the antenna gain of the cladding is 11.43dB at 5GHz. Then, the application of FSS cladding in sparse arrays is also studied. In this structure, a 2 × 2 antenna array with large array element spacing is used as the feed. The structure of the processing and testing, the results show that the antenna array gain of 18.54dB. Meanwhile, the side lobes of the array on the E-plane and the H-plane are -9.17 dB and -12.04 dB respectively, avoiding the occurrence of grating lobes.