论文部分内容阅读
采用单双端平衡转换技术、最佳λ/4波长匹配技术和近垂直入射天波技术 (Near- Vertical IncidenceSkywave)设计轻便型可变长度双极天线 ,可以有效的解决定长型 44米双极天线存在的馈电形式效率低等问题 ,更加适用于 15 0 W以下短波电台配套使用。本文介绍了近垂直入射天波传播的基本特点以及用于近垂直入射天波传播方式的可变长度双极天线设计 ,并给出试验结果。
The single-and double-ended balanced conversion technology, the best λ / 4 wavelength matching technology and the near-vertical Incidence Skywave design of portable variable length dipole antenna can effectively solve the fixed-length 44 m bipolar antenna The existing form of low efficiency and other issues, more suitable for short-wave radio 150 W supporting the use of the following. This paper introduces the basic characteristics of near-vertical incident sky wave propagation and the variable-length dipole antenna design for near-vertical incident sky wave propagation. The experimental results are also given.