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。
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.
出处
《电子科技大学学报》
EI
CAS
CSCD
北大核心
1994年第6期595-601,共7页
Journal of University of Electronic Science and Technology of China
基金
电子部预研基金
关键词
聚焦
菲涅耳区
口径天线
电磁能
focusing
Fresancl region
aperture antenna electromagnetic energy
