Radiation Demo from a Half-Wave Dipole Antenna

FDTD simulation of electromagnetic radiation from a half-wave dipole antenna. The current distribution is cosine-tapered, which is a close approximation to the real current distribution on a dipole.

Note how all the energy radiates away from the broadside of the antenna, and virtually none radiates away from the endpoints.

Category:

Education

Tags:

• dipole
• antenna
• FDTD
• simulation
• radiation
• demonstration
• electromagnetics

[DarkoAqua]

@nicksix71 Trouble is, you can't put two dipole antennas that close and only "fill-in" the hole. They will interact with each other and phase trouble will rise wrom such an array. Antenna arrays are more complex systems, basicaly it goes down to trigonometry, but it is not that simple to calculate all effects in arbitrary directions by hand.

[nicksix71]

Please correct me if i am wrong.... We could add a third element (directly north) and with the correct phase alignment, fill the null in that area only?