DEVICE FOR ATTENUATING ELECTROMAGNETIC WAVE AND REDUCING SIDE EFFECTS USING LONGITIDINAL WAVE

摘要

Disclosed is a device for attenuating an electromagnetic wave and reducing side effects comprising a housing of a memory card shape configured to be insertable into a card slot of an electronic device, an input/output interface configured to be formed in one surface of the housing and be connected with a card connector of the electronic device, a power interface unit configured to include a power supply terminal and a ground terminal among a plurality of contacts of the input/output interface and receive power from the electronic device, and an electromagnetic attenuation circuit unit configured to be provided in the housing, be connected with the power interface unit, generate a longitudinal wave signal for attenuating an electromagnetic wave of the electronic device, and transmit the longitudinal wave signal to the electronic device.