US Patent 11998052 Shielding of an induction coil within an aerosol generating device

An aerosol generating device includes an accommodation space in a cylindrical shape for accommodating a cigarette, an induction coil wound along an outer surface of the accommodation space, a power supply for supplying electric power to the induction coil, a controller for controlling electric power supplied to the induction coil, and a shield film including a ferromagnetic material for shielding electromagnetic interference from electromagnetic waves emitted from the induction coil. The shield film surrounds only a portion of an outer surface of the induction coil to shield the electromagnetic interference from the electromagnetic waves having a frequency that does not exceed 500 kHz.