| 摘要 |
A device and a method for blocking RF radiation from a mobile phone are provided. The device comprises a hollow ferrite structure and a solenoid in a shortcut configuration having its terminals electrically coupled. The ferrite structure is shaped to match the part of the mobile phone and the antenna from which the RF radiation originates. The method comprises: providing a hollow ferrite structure with a solenoid in a short cut configuration located therein in close proximity to a mobile phone; converting RF radiation from the mobile phone into a first magnetic flux directed in 90° relative to the RF radiation; generating an electric current in response to the first magnetic flux; and generating a second magnetic flux directed in 90° relative to first magnetic flux resulting in canceling the RF radiation.
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