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Research Institute of Antennas & RF Techniques
School of Electronic & Information Engineering
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Research Institute of Antennas & RF Techniques
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Research Institute of Antennas & RF Techniques
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Research Institute of Antennas & RF Techniques
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Research Institute of Antennas & RF Techniques
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Research Institute of Antennas & RF Techniques 实际应用中也经常用到非直线的导线振子，如V
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Research Institute of Antennas & RF Techniques
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Research Institute of Antennas & RF Techniques 【例型振子。

90D
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Research Institute of Antennas & RF Techniques
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Research Institute of Antennas & RF Techniques /2
L λ=
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Research Institute of Antennas & RF Techniques
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Research Institute of Antennas & RF Techniques
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Research Institute of Antennas & RF Techniques
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Research Institute of Antennas & RF Techniques
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Research Institute of Antennas & RF Techniques
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Research Institute of Antennas & RF Techniques
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Research Institute of Antennas & RF Techniques
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，相当于双导线的特性阻抗为300欧姆。

Research Institute of Antennas & RF Techniques
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Research Institute of Antennas & RF Techniques
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俯视图端视图
Research Institute of Antennas & RF Techniques
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Research Institute of Antennas & RF Techniques
7.3 八木-宇田天线
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论八天天线原理的文章。

Research Institute of Antennas & RF Techniques
y Research Institute of Antennas & RF Techniques 激励元引向器
支撑杆
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Research Institute of Antennas & RF Techniques
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阵结构H面方向图
Research Institute of Antennas & RF Techniques
y Research Institute of Antennas & RF Techniques 0.04λ，由数值方法可得H 面的方向图，寄生元比激励元长的一般趋势：出现了沿端射方向、且是由寄生元指向有源元的单一主瓣，这种
阵结构H 面方向图
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阵结构H面方向图
Research Institute of Antennas & RF Techniques
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阵结构H面方向图E面方向图
Research Institute of Antennas & RF Techniques
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Research Institute of Antennas & RF Techniques
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Research Institute of Antennas & RF Techniques
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Research Institute of Antennas & RF Techniques
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Research Institute of Antennas & RF Techniques
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八木天线设计曲线
Research Institute of Antennas & RF Techniques
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Research Institute of Antennas & RF Techniques
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一个27元八木天线上的相对电流幅度
Research Institute of Antennas & RF Techniques
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Research Institute of Antennas & RF Techniques
【例7-2】为电视12频道设计一个工作在205.25MHz
的12元八木天线。

使用直径1cm的阵元，且与金属y
Research Institute of Antennas & RF Techniques
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Research Institute of Antennas & RF Techniques
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Research Institute of Antennas & RF Techniques
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Research Institute of Antennas & RF Techniques
舰载八木天线
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Research Institute of Antennas & RF Techniques
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Research Institute of Antennas & RF Techniques
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Research Institute of Antennas & RF Techniques。