Displacement Currents

Displacement current explains why the ends of dipole antennas have something more than zero current.
Displacement current explains why the ends of dipole antennas have something more than zero current.
Understanding how feed position along the half-wave dipole antenna affects the electric and magnetic fields around it.
Is a dipole antenna defined by its behavior alone or also how one energizes it? The answer exists in IEEE and historical literature.
Real measurements of a Slim Jim antenna and traditional j-pole antenna reveal the truth about their respective gain and pattern.
Observations from the Virginia QSO Party confirm simulation results concerning horizontal antennas and NVIS propagation.
We re-introduce the theory and origins of Cebik’s (W4RNL) Asymmetrical Hatted Vertical Dipole (AHVD) antenna with the hope to facilitate a vertical polarization portable 20-10m aerial for portable operations.
A 1/4 wavelength of 75 ohm coax inline with a full wavelength of 50 ohm coax is all one needs to make a simple 80m dipole become a wideband dipole antenna.
Keep it simple for the Jamboree on the Air – Use a ladder line fed dipole.
Tom, ke6ynh, asks… “Why don’t hams like vertical dipole antennas.