基于新型缝隙单元的微带全向阵列天线设计

提出了一种新型串行馈电的全向缝隙阵列天线，在带状线两侧背靠背刻蚀8对圆环缝隙，在缝隙内部加载一个Y形缝隙，延长Y形缝隙的长，并在顶部刻蚀横槽，形成最终的Y-T型缝隙结构，用以提升单元辐射性能。采用遗传算法(GA)对阵列进一步优化，使其工作带宽进一步扩宽，增益有所提升。根据设计结果加工制作了天线样品，实际测试表明，天线的|S11|<-10 dB阻抗带宽为7.93% (5.56~6.02 GHz)，带宽内峰值增益均高于8.99 dBi。工作在5.8 GHz处，E面旁瓣水平低于-10.11 dB，峰值增益为9.43 dBi, 且有稳定的全向辐射性能。

Design of omnidirectional microstrip array antenna based on novel slot unit

A new serial-fed omnidirectional slot array antenna is proposed. Eight annular slots are etched back to back on both sides of the stripline, and a Y-shaped slot is loaded inside the slot to extend the length of the Y-shaped slot. The top is etched with horizontal grooves to form the final Y-T slot structure to improve the unit radiation performance. Genetic algorithm (GA) is used to further optimize the array so that its working bandwidth is further widened and the gain is improved. According to the design results, the antenna samples are fabricated. The actual measurement shows that the impedance bandwidth |S11|<-10 dB of the antenna is 7.93% (5.56~6.02 GHz), and the peak gain in the bandwidth is higher than 8.99 dBi. Operating at 5.8 GHz, the E-plane sidelobe level is lower than -10.11 dB, the peak gain is 9.43 dBi, and it has stable omnidirectional radiation performance.