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本文在作者已经获取的理论与实践成果基础上,提出对我国微波中继站现行广泛应用的经典卡塞格伦天线进行技术改造的意见.其措施是保持原造价高昂的抛物主面结构不变,从控制口径场分布以提高效率和改善副瓣电平出发仅对副反射面赋形;再根据馈源的相位中心和组合馈源的等效辐射中心的位置,调整抛物面位置以获得最佳轴向位移. 这种改造在经济上是价廉的,在效果上是显见的,在技术上是可行的.对现行大量采用经典卡氏天线的微波站的通讯质量的提高容易收到立竿见影的效果.可供参考与借鉴,具有一定的现实意义。
Based on the theoretical and practical results that the author has already obtained, this paper proposes the technical transformation of the classic Cassegrain antenna, which is widely used in our country’s microwave relay station, and its measures are to keep the original parabolic main structure with high cost unchanged from Control the caliber field distribution in order to improve the efficiency and improve the side lobe level only for the secondary reflective surface shaping; and then according to the feed phase center and the combination of the source of the equivalent radiation center position, adjust the parabolic position to obtain the best axial Displacement.This modification is economically cheap, the effect is obvious, technically feasible.It is easy to receive immediate results on the current communication quality improvement of a large number of microwave stations using the classical card’s antenna. For reference and reference, has some practical significance.