为天气雷达设计一维相扫相控阵天线，方位面副瓣低于-30 dB，波束宽度小于1°，俯仰面接收副瓣低于-40 dB。方位面波束采用窄边波导裂缝阵列天线实现，采用全数字T/R组件精确控制幅度和相位，实现低于-40 dB的俯仰面接收副瓣。测试结果表明，副瓣电平与波束宽度指标与理论值吻合较好，满足指标要求。%A one⁃dimensional phased array antenna was designed for weather radar. Its sidelobe in azimuth is better than -30 dB,the beamwidth in azimuth is less than 1° ,the receiving sidelobe in elevation is better than ⁃40 dB. The beam⁃width in azimuth is realized by the waveguide narrow⁃side slot array antenna,all⁃digital T/R module was adopted to control the amplitude and phase accurately,so that the receiving sidelobe being better than ⁃40 dB in elevation is realized. The measured results show that the sidelobe level and beamwidth coincides with theoretical values quite well. The system met the requirements of design indexes.
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