| 摘要 |
An antenna tuning of a mobile phone using an EMI(ElectroMagnetic Interference) paint is provided to perform tuning variation of a frequency of an antenna by changing a coating pattern of the EMI paint coated in the mobile phone and also changing the shape of ground. In an embedded antenna(3) installed on a top part of a printed circuit board(2) with a constant height, an EMI paint(50) is coated on the inner plane of a case of a mobile phone(1) and the printed circuit board with a ground is comprised in the mobile phone. A first region(10) is coated with the EMI paint on the inner plane of the case and provides the ground. A second region(20) is extended from the first region, and is coated by changing the coating pattern of the EMI paint and changes the tuning of a frequency of the antenna by changing the shape of the ground.
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