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  1. L

    input impedance (Zo= 50 Ω)

    Hello everyone, I'm having difficulty with the line input impedance of the circular planar antenna signal. Its impedance is 117 ohms and the correct is 50 ohms, I am not able to lower the value. I made modifications to the input increasing the line width and also made an impedance transformer...
  2. L

    why does 1/4 wavelength have to have a ground plane and 1/2 doesn't?

    Thank you all that was very enlightening Marconi: Thank you for offering the welcome request
  3. L

    why does 1/4 wavelength have to have a ground plane and 1/2 doesn't?

    Hello everyone, does anyone explain? why does 1/4 wavelength have to have a ground plane and 1/2 doesn't? I know that an antenna that has half a wavelength does not need the ground plane (example a dipole antenna) and when using a wavelength of 1/4 it is usually necessary to have the ground...
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