Dear all,<\/p>\n
I noticed that if we put the dipole (Hertzian-dipole excitation) close to the ground and I<\/span> measured the E-field at one point far from the dipole, the simulated E-field is different from the one I obtained by using image method.<\/p>\n Specifically, I did the following HFSS simulations and I noticed some differences<\/p>\n Working frequency: 200 MHz. E-field observation point <\/span>P1: (0, 0, 400) mm<\/p>\n Working space: free-space with a XY perfect conductor (PEC) plane at z = 0 mm.<\/p>\n HFSS case #1: One dipole in a free-space space with a XY perfect conductor (PEC) plane at z = 0 mm.<\/p>\n Dipole information: +y E Hertzian dipole, L=50 mm, Radius: 5 mm, location (0, 0, 30) mm (30 mm above the PEC plane.<\/p>\n HFSS case #2 (image method): Two dipoles in a free-space space.<\/p>\n Dipole information : <\/span><\/p>\n 1. <\/span><\/span><\/span>+y E Hertzian dipole, L=50 mm, Radius: 5 mm, location (0, 0, 30) mm. <\/span><\/p>\n 2. <\/span><\/span><\/span>-y E Hertzian dipole, L=50 mm, Radius: 5 mm, location (0, 0, -30) mm<\/span><\/p>\n <\/p>\n It is observed that the total E-field at P1 generated in case #1 and #2 are difference. <\/span><\/p>\n <\/p>\n My questions is:<\/span><\/p>\n 1. <\/span><\/span>Why the differences are observed in Case #1 and Case #2 when the same setting is considered (same working space, same setting for analysis, etc.)<\/p>\n","protected":false},"template":"","class_list":["post-251693","topic","type-topic","status-closed","hentry","topic-tag-dipole","topic-tag-hfss"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t