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设计了一种八单元L波段零点填充单脉冲阵列天线,该天线采用双层空气微带形式展宽带宽,通过一分八的合差网络对天线进行馈电,天线的测试与仿真结果有较好的一致性,测试结果表明,该天线在1.03-1.09GHz驻波均小于1.5,方位面形成低副瓣的和差波束,俯仰面具有零点填充赋形特性。最大增益为21d B。分别对串馈与并馈形式阵列天线进行了加工和测试,着重探讨了单元串馈与并馈形式对整体天线性能的影响。
An 8-cell L-band zero-filling single-pulse array antenna is designed. The antenna adopts double-layer air microstrip to broaden the bandwidth. The antenna is fed through a one-by-eight coherency network. The antenna test and simulation results are good The test results show that the standing wave of the antenna at 1.03-1.09GHz is less than 1.5, the low sidelobe and the differential beam are formed in the azimuth plane, and the zero plane shape of the elevation plane is filled in. The maximum gain is 21d B. The array antenna fed and fed in series are processed and tested respectively. The influences of the element-fed and feed-fed elements on the performance of the whole antenna are discussed emphatically.