栅状微带天线阵的工程设计

• 作 者: 宋银锁
• 出 处: 航空兵器
• 发表日期: 1985年03期
• 关键词: 微带天线阵 背射天线 卡塞格伦天线 新型天线 和差网络 空空导弹 纵向尺寸 低旁瓣 带状线 单脉冲

一、前言空空导弹单脉冲导引头天线,除了要求高增益、低旁瓣等电性能指标之外,还要求体积小,重量轻,平面结构,并便于与平面和差网络(带状线或微带线)的连接。目前,仅有为数不多的几类天线程度不等地满足上述要求。例如,短背射天线,波导裂缝天线,变态卡塞格伦天线。这些天线本身纵向尺寸典型地约在0.5～1.5λ_0(λ_0为自由空间波长)之间,仍然是比较“重”、“厚”的天线。因此,很有必要寻求能更好地满足上述要求的新型天线。

I. Introduction Air-to-air missile single-pulse seeker antenna, in addition to requiring high gain, low sidelobe and other electrical performance indicators, but also requires small size, light weight, planar structure and easy with the plane and the difference network (stripline or Microstrip line) connection. At present, only a few of these types of antennas range from the above requirements. For example, short back-fired antennas, waveguide crack antennas, metamorphic Cassegrain antennas. The vertical dimensions of the antennas themselves are typically between about 0.5 and about 1.5 [lambda] -0 ([lambda] -0 is the free-space wavelength) and are still relatively “heavy”, “thick” antennas. Therefore, it is necessary to find a new antenna that can better meet the above requirements.