Aiming at the problems of narrow bandwith of microstrip patch antenna and the poor performance of directional radiation,a missile conformal with lateral radiation and broadband microstrip antenna were proposed in this paper.The microstrip antenna used inverted square patch,rectangular slot was cut in the patch,and a circular parasitic patch was put in the slot to optimize the antenna performance.Simulation and test results showed that this slotted,conformal and directional microstrip antenna had broadband characteristics,in the vic-inity of the center frequency of 7.7 GHz,direction map had good lateral radiation performance,small size and excellent indicators,which met the requirement of proximity fuze and had a certain value in engineering.%针对近炸引信中贴片微带天线带宽窄及定向辐射性能差等问题，提出了与弹体共形的具有侧向辐射、宽频带的微带天线。该微带天线采用倒方形贴片，在贴片上进行开方形槽，并在槽中加入圆形寄生贴片对天线性能进行优化。仿真与实物测试的结果表明：开槽的共形定向微带天线具有良好的宽带特性，在中心频率7.7 GHz附近方向图具有良好的侧向辐射性能，指标优良且尺寸小，满足近炸引信所需。
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