thanks so muchIf the antenna is submerged in water, yes you can use the radiation box filled with water.
Generally the safest distance from an antenna to don't get any interference is 2λ. But this distance depends by the type of antenna, where dipoles are more affected and monopoles less affected. However, for some cases the distance could be reduced to λ/4, but not less.
If you want to simulate the antenna operating in a realistic environment with a surrounding box of water, you can set up the following structure:
1. Antenna structure placed inside a box of water (dielectric material defined as water).
2. Radiation box surrounding the antenna and the box of water.
This setup allows you to analyze the interaction between the antenna, the water box, and the radiation box, providing a more accurate representation of the antenna performance in a water environment.
If you are only interested in analyzing the antenna's radiation characteristics when exposed to a water environment, you can set for comparison:
1. Antenna structure without a box of water.
2. Radiation box surrounding the antenna with the dielectric material defined as water.
This configuration shows how the antenna radiates in the presence of water, without considering the effects of the water box itself.
it helps me a lot.I don't think you will get any signal at 2.4GHz after 10m of water.
According to the research attached, there is huge attenuation for much smaller water thickness:
In terms of how antenna is influenced by the water (impedance, gain, efficiency, etc.) I think that 10cm or 10m of water will do pretty much the same influence.
At 433MHz attenuation in salt water is smaller compared to 2.4GHz.
That is true, but both values are extreme.At 433MHz attenuation in salt water is smaller compared to 2.4GHz.
Yes, That's right.That is true, but both values are extreme.
Above I read "submerged in the depth of at least 10 meters working with Wi-Fi" and this means attenuation to the surface will be much too large at 433 MHz also.
Thank You.There are some literature results for lower frequencies up to 20 MHz https://www.researchgate.net/public...propagation_at_MHz_frequency_through_seawater
Best results are apparently achieved with dipole antenna submerged in a box with deionized water
This overview article has also references to 2.4 GHz underwater propagation https://pmc.ncbi.nlm.nih.gov/articles/PMC4934316/
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