| 摘要 |
PURPOSE: An electromagnetic wave reducing apparatus of a mobile communication terminal is provided to effectively reduce electromagnetic wave at close distance without effecting electromagnetic wave at long distance. CONSTITUTION: An electromagnetic wave reducing apparatus of a mobile communication terminal having a helical antenna part(100) and a whip antenna part(120), comprises an electromagnetic wave absorbing body(300). The electromagnetic wave absorbing body(300) is arranged outside the metal load(101) of the helical antenna part(100). The electrode absorbing body(300) is made of manganese zinc ferrite magnetic material containing Y2O3 1.8-2.0wt%, K2O 0.04-0.09wt%, TiO 0.02-0.09wt%, Na2O 0.29-0.38wt%, MnO2 14.0-15.0wt%, ZnO 15.0-16.5%, Fe2O3 65.0-75.0wt%, CaO 0.05-0.09wt%, SiO2 0.60-0.85wt%, NiO 0.01-0.03wt% and Cr2O3 0.01-0.05wt%. The electromagnetic wave absorbing body(300) is formed as a cylinder and has a center through-hole for inserting the metal load(101).
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