The diffracted field and its gradient near the edge of a thin screen.
The diffracted field and its gradient near the edge of a thin screen.
复制标题
薄屏幕边缘附近的衍射场及其梯度。
DOI：
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发表时间：
2013
影响因子：
2.4
通讯作者：
U. Svensson
中科院分区：
文献类型：
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作者：
D. Hewett;U. Svensson
用于衍射建模的二次边缘源线积分公式除了方向性函数之外，还使用具有1/r依赖性的边缘源。乍一看，这似乎与薄屏幕边缘附近渐变的预期1/r行为相矛盾。分析了平面波垂直入射到薄屏上的特殊情况，表明二次边缘源公式确实导致了理想楔形体边缘附近的预期行为。
The secondary edge source line integral formulation for diffraction modeling uses edge sources with a 1/r dependency, in addition to a directivity function. At first sight, this might seem to contradict the expected 1/r behavior for the gradient near the edge of a thin screen. An analysis is presented for the special case of perpendicular plane wave incidence onto a thin screen, which shows that the secondary edge source formulation does indeed lead to the expected behavior close to the edge of an ideal wedge.