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?

 

[Darkmatterrouter1]

The visualizer works really well. Is it possible to add a different antenna. I'm hypothesising a 3D printed matrix of different materials as the Radiating Element for a Dark Matter antenna (see example). The shape and material makes for an almost infinite number of possibilities which would require extensive testing and experimentation. This is all hypothetical from my science fiction novel. Let me know what you think, or if you want to see my hypothesis.