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多模喇叭作为单脉冲天线的馈源有着结构紧凑、改善和差矛盾、测角精度高等优点,被广泛应用于海防主动雷达中。然而,频带窄、线极化是其缺点,难以在无源跟踪、制导系统中应用。本文提出一种宽带多极化六模天线馈源,并从理论和实践两个方面分析了带宽和多极化适应性,其相对带宽可达±20％,且能在垂直/水平、左斜/右斜、左旋/右旋全极化状态下接收,易见,该馈源对被动寻的系统是适用的。
As a single pulse antenna, the multi-mode horn has the advantages of compact structure, improved and poor contradiction, and high accuracy of measuring angle. It is widely used in marine active radar. However, the narrow band, linear polarization is its shortcomings, it is difficult to use in passive tracking and guidance system. This paper presents a broadband multi-polarization six-mode antenna feed, and from both theoretical and practical aspects of bandwidth and multi-polarization analysis of adaptability, the relative bandwidth of up to ± 20%, and can be vertical / horizontal, left oblique / Right oblique, left-handed / right-handed full polarization state of reception, it is easy to see that the source of passive search system is applicable.