2026-04-13T02:13:53Zhttps://recercat.cat/oai/request

oai:recercat.cat:2117/4032152025-07-23T06:14:18Zcom_2072_1033col_2072_452951

00925njm 22002777a 4500 dc Wang, Shuhan author 2023-07 Due to the magnetic intrinsic divergence present in the magnetic field, which makes it difficult to transmit efficiently from one point to another low frequency magnetic fields, the signal decays rapidly. In addition, current centimetre-scale sensors can detect the signal transmission of many particles, but not a small number or a single particle. This matter has been improved by researching and enhancing the transmission medium, by decreasing signal divergence decreases signal attenuation in the magnetic field and resolves the issue of size differences. Magnetic fields have been generated in the laboratory by constructing a circuit, and analyse and compare ferrite, Nickel, and cobalt as magnetic materials. Numerous experiments demonstrate that the magnetic guide effectively reduces the magnetic field's attenuation, and that the transmission efficacy decreases as the size of the magnetic guide increases. Moreover, compared various sizes, the transmission of high-frequency signals in the magnetic field is significantly enhanced, whereas the transmission of low-frequency signals is not enhanced. Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Telecomunicació òptica::Fotònica Magnetometers Photonics bio-signal sensor magnetic guide optically pumped magnetometer Magnetòmetres Fotònica Optical transformation based magnetic field guide for optically pumped magnetometers