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nec simulation - what is going on with this antenna?
All,
Can someone explain what is going on with this antenna? There are two resonant points, one at about 4.5 MHz and one at about 6. The first one has a low impedance and the second one has a high impedance. I actually saw this phenomenon with a physical antenna being measured with an 8405a but had did not recall ever hearing it discussed. Thanks - Dan CM Length X1 = 3 CM Length X2 = 2 CM Length Y = 2 CM X sections = 2 CM Y sections = 2 CM Rotate X, Y, Z = 0, 0, 0 CM Move X, Y, Z = 0, 0, 0 CE GW 1 25 0.5 0 15 6.5 0 15 0.025 GW 2 25 -0.5 0 15 -6.5 0 15 0.025 GW 3 5 -0.5 0 15 0.5 0 15 0.025 GE 0 LD 0 2 13 13 1.e-3 3.e-5 LD 0 1 13 13 1.e-3 3.e-5 EX 0 3 3 0 1 0 GN 2 0 0 0 13 5.e-3 FR 0 1 0 0 4 0 EN |
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