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Image Theorem - Image Theorem_Hon Tat Hui The Image Theorem...

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Image Theorem_____________________________________________________________________________________________Hon Tat Hui 1 The Image Theorem For antennas mounted over or near a ground plane (a very large perfectly conducting plane), virtual sources (images) can be place below the ground plane to account for reflections from the ground plane. After introducing the image sources, the electromagnetic field above the ground plane can be considered as a sum of the electromagnetic fields due to the real sources (above the ground plane) and the image sources (below the ground plane), with the ground plane removed. This is the image theory. Note that the image theory can only be applied above the ground plane but not below the ground plane. Below the ground plane, the electromagnetic field is strictly zero.
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