| 聚焦口径轴向电磁能的研究 |
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| 引用本文： | 邓扬建,林为干,赵愉深.聚焦口径轴向电磁能的研究[J].电子科技大学学报(社会科学版),1994(6). |
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| 作者姓名： | 邓扬建 林为干 赵愉深 |
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| 作者单位： | 电子科技大学应用物理研究所 |
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| 摘 要： | 对均匀振幅，凹冰面相位分布的圆口径天线和矩形口径天线的轴向辐射场进行研究、绘出了不同口径尺寸和焦距下的电磁能分布曲线。研究表明：电磁能可以聚焦在菲涅耳区或近区，口径增大时聚焦强度迅速提高，长距离的电磁能聚焦必须进行大口径天线的研究和应用。
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| 关 键 词： | 聚焦 菲涅耳区 口径天线 电磁能 |
AXIAL ELECTROMAGNETIC ENERGY FROMFOCUSED APERTURES |
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| Deng Yangjian, Lin Weigan, Zhao Yushen.AXIAL ELECTROMAGNETIC ENERGY FROMFOCUSED APERTURES[J].Journal of University of Electronic Science and Technology of China(Social Sciences Edition),1994(6). |
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| Authors: | Deng Yangjian Lin Weigan Zhao Yushen |
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| Abstract: | The axial field of uniformly illuminated circular apertute and rectangular aperture is investigated for concave spherical wave front .Curves for apetures of different size and different foeal length are plotted .the study shows that electromagnetic energy can be focused in the Fresnel or near re- gion The field intensity goes up rapidly as the aperture size becomes larger.Long distance focusing can be achieved only using very large antenna apertures. |
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| Keywords: | focusing Fresancl region aperture antenna electromagnetic energy |
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