Antenna efficiency Electric conductivity 2 Electromagnetic simulation 2 Antenna currents 1 Antenna structures 1 Bandwidth 1 Bulk conductivities 1 Conductive materials 1 Conductivity 1 Deterioration 1 Dielectric losses 1 Efficiency 1 Electric Conductivity 1 Electro-textile 1 Healthcare monitoring 1 Helical antennas 1 High-loss material 1 Higher frequencies 1 Human Body 1 Human bodies 1 Human body 1 Humans 1 Input resistance 1 Loss characteristics 1 Metallic textiles 1 Monitoring, Physiologic 1 Normal mode helical antennas 1 Normal-mode helical antenna (NMHA) 1 Reliability 1 Significant deteriorations 1