Abstract: A filter includes at least two coil assemblies, a plurality of wiring harnesses, at least one dielectric mechanical part, and at least two wiring layers disposed in a stacked manner, where each coil assembly includes a plurality of wires, and one or more wires belonging to different coil assemblies are disposed in each wiring layer; each wiring harness is coupled to two different wires of a same coil assembly, to sequentially couple the wires of each coil assembly together; and each dielectric mechanical part is located between two adjacent wiring layers, wiring layers are stacked together under effect of the dielectric mechanical part, and a volume of each dielectric mechanical part is less than a volume of interlayer space between two wiring layers that are in contact with each dielectric mechanical part.

Abstract: This application provides a touchscreen interference suppression method and apparatus, and a terminal device. In the method, when a touchscreen is in an untouched state, whether a wideband interference signal exists in the touchscreen is detected; and when the wideband interference signal exists, a detection bandwidth of a filter unit is reduced.

Abstract: The present disclosure provides an interference reduction method and apparatus. The method includes obtaining a current communication frequency of a radio frequency system of an electronic device; and determining a first operating frequency of a first interface of the electronic device according to the current communication frequency, wherein a current radio frequency communication frequency of a current serving cell of the radio frequency system is not a multiple of a divide-by-four frequency of the first operating frequency.

Abstract: The present disclosure provides an interference reduction method and apparatus. The method includes obtaining a current communication frequency of a radio frequency system of an electronic device; and determining a first operating frequency of a first interface of the electronic device according to the current communication frequency, wherein a current radio frequency communication frequency of a current serving cell of the radio frequency system is not a multiple of a divide-by-four frequency of the first operating frequency.

Abstract: This application provides a touchscreen interference suppression method and apparatus, and a terminal device. In the method, when a touchscreen is in an untouched state, whether a wideband interference signal exists in the touchscreen is detected; and when the wideband interference signal exists, a detection bandwidth of a filter unit is reduced.