Flexible elongated inductor and elongated and flexible low-frequency antenna

A flexible elongated inductor comprising a winding made from a conductive element arranged around a core formed by at least two rigid magnetic cores, made from ferromagnetic material, connected in an articulated manner to one another at their ends, forming an oblong assembly, wherein each of the at least two magnetic cores comprises:

• a head end A, provided with a circular convex curved surface in relation to a transverse axis of the head;
• and
• a tail end B, provided with a circular concave curved configuration in relation to a transverse axis of the tail, parallel to the transverse axis of the head, said circular concave curved configuration being complementary to said circular convex curved configuration,
• wherein the head end A of one of said magnetic cores is coupled through contact surfaces with the tail end B of an adjacent magnetic core, forming an articulated attachment, wherein said transverse axes of the head and tail of the at least two magnetic cores are coupled to one another coinciding in the coupling area, providing a joint having a variable, adjustable angle, and
• wherein the oblong assembly of said two or more rigid magnetic cores is surrounded by a flexible polymer casing, including magnetic charges that work together to prevent magnetic flux dispersion in the coupling areas or interstices between said at least two magnetic cores, said flexible polymer casing including microfibers, microparticles and/or nanoparticles of a soft ferromagnetic material present alone or in any combination thereof inside the polymer matrix of said polymer casing, providing said magnetic charges.