Visualize Electromagnetic Fields from Dipole Antennas

[Rotem Tsafrir]

TL;DR

Hey everyone!
I recently built a real-time web-based simulation to help visualize the electric and magnetic fields radiated by dipole antennas:

https://antennasim.com


The simulation lets you:

• Add multiple dipole antennas anywhere on the canvas

• Set antenna phase and frequency

• Visualize the E-field, B-field, and Poynting vector in 2D

• Observe near-field and far-field interactions

 

[renormalize]

I recently built a real-time web-based simulation to help visualize the electric and magnetic fields radiated by dipole antennas:

My web protection software blocks access to your link because it has an "unmatching security certificate".

 

[berkeman]

My web protection software blocks access to your link because it has an "unmatching security certificate".

Yeah, I'm getting the same error/warning.

 

[Rotem Tsafrir]

Damn it I thought I fixed this issue.

Here is a link that might work better :
https://rotemtsafrir.github.io/dipole_sim/

 

[tech99]

It is incredibly interesting. I have plotted actual fields in this way using models. It looks rather as if your dipole is terminated in resistors because the E-field along the dipole moves progressively in the manner of a travelling wave. I wonder what your assumptions are about this? It is also interesting that the energy is initially contained within a cylinder rather than spreading in the figure eight pattern, and that is what I found. This is the slight near-radiation field effect of a dipole. As a consequence, I found that the Power Flux Density tends initially to fall with 1/D rather than 1/D^2. I need to look up my old measurements. I notice that your colours do not seem to display the true reduction in field strength with distance?