mingquanyuan
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I have tried to simulate a half wave dipole with HFSS using PEC. The dipole is 38.75mm long with a small gap (0.4mm) between the two arms to allow a lumped port to be put there. So this should be a half wave at around 1.8GHz.
But the imaginary impedance does not even reach 0 (smaller than 0). How can I determine the input resistance of the anteenna? (I mean usually we determine the input resistance of the antenna by reading the real part when the imaginary part equals to zero)
But the imaginary impedance does not even reach 0 (smaller than 0). How can I determine the input resistance of the anteenna? (I mean usually we determine the input resistance of the antenna by reading the real part when the imaginary part equals to zero)