Do you know if there is an English translation available of that Japanese document?EleSuki said:
We discourage the use of AI chatbots for technical tasks at PF. I'll try to use Google Translate to see what some parts of the paper says.EleSuki said:I would appreciate it if you could try to translate the page on ChatGPT or DeepL if possible.
I only looked at the first sentence or two of the first answer in that PSE thread, and I agree that there should be no effect on the EM from any magnetization. As it says, it is the free electrons (and skin depth) of the metal shielding that provides the shielding effect for EM.EleSuki said:https://physics.stackexchange.com/q...radio-waves-from-forcing-two-magnets-together
It has been observed that cooperating magnetic fields, such as neodymium magnets, have no effect on electromagnetic waves. Then, it seems to be safe to assume that imparting the characteristics of a magnet to iron mesh fabric will have no effect on the attenuation rate at all. I have solved the problem myself, but as always, if there is someone who can think with me, I will be able to get to the desired information. Thank you very much for your help.
Yikes, that's really high frequency. Maybe the local B-field is doing something with the motion of the free electrons in the metal to provide that effect. I'll try to translate the paper when I get a chance to see what their explanation is for the effect.EleSuki said:new magnet shown in this paper showed radio absorption in the 220 gigahertz band of millimeter waves.
The radio attenuation rate refers to the reduction in power of radio waves as they pass through materials or travel through the atmosphere. It quantifies how much the signal strength decreases, which can be due to absorption, reflection, scattering, or diffraction. This rate is crucial in designing communication systems to ensure signal reliability and strength over distances and through various environments.
A magnetized iron mesh can significantly influence radio waves due to its magnetic and conductive properties. The iron mesh acts as a shield, absorbing and reflecting radio waves, which can lead to attenuation of the signal. The degree of attenuation depends on the mesh's properties such as the size of the openings, the thickness of the wires, and the intensity of magnetization.
Magnetized iron mesh is used in various applications to control or manipulate radio waves. For example, it is used in electromagnetic shielding to protect electronic equipment from unwanted radio frequency interference (RFI). It is also used in constructing radomes that protect radar antennas, where it helps in managing the electromagnetic fields and improving signal clarity by reducing signal loss.
Several factors can influence how a magnetized iron mesh attenuates radio waves, including the mesh's pore size, wire diameter, the material's permeability and conductivity, and the strength of the magnetization. Additionally, the frequency of the radio waves also plays a critical role; higher frequencies typically experience more attenuation compared to lower frequencies when interacting with the same mesh.
The effectiveness of a magnetized iron mesh in attenuating radio waves can be measured using several methods. One common approach is to set up a controlled test where radio waves are transmitted at known powers and frequencies through the mesh, and the attenuation level is measured using receivers. This can be quantified in terms of the mesh's shielding effectiveness, which is the ratio of the signal strength without the mesh to the signal strength with the mesh in place. This value helps in determining the mesh's suitability for specific applications.