Hi all, I am very new to MEEP and FDTD simulations...I tried simulating the radiation pattern of the antenna example in the tutorials... But in the simulations, I wanted to fit in a metallic conductor adjacent to the antenna and see the changes in the radiation pattern... On simulating the tutorial without any metal for Jy source, I get the result same as in the tutorial example. The source is at (0,0). I tried plotting the poynting vectors in polar coordinates with this geometry
On adding a long conducting metal parallel to the x-axis, below the source (0.25 m) in the y-direction.....Here the poynting vector values get shifted to the below region...similarly for metal conductor placed above, the poynting vectors were larger and shifted in the upper section. But as I kept the long conducting metal parallel to the y-axis to the left of the source, the poynting vector values were to the right side of the Y axis.. Why this change.. I tried for Ex and Ez as well and when the conductor is parallel to y axis, the poynting vector values were higher and shifted opposite side, unlike when it's parallel to the x axis. I was having a little hard time interpreting the results... If someone has some perspective on the same, kindly enlighten me. PS: I removed the symmetry condition from the example code...as there was trouble placing the conductor in such a case.. Thank you, -- Krishna Nivedita G, Int.BS-MS, School of Physics, IISER Thiruvananthapuram.
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