Flexible Textile Antenna for IoT Applications at 2.4 GHz Analyzed with Characteristic Modes. - Carlos Ramiro Peñafiel-Ojeda; Alex Eduardo Guambaña-Tapia; Jose Luis Jínez-Tapia; Hugo Oswaldo Moreno Aviles; Gabriela Tubon-Usca (ICCSA (Workshops 14), 2025)