STRUCTURE OF AN ELECTROMAGNETIC WAVE SHIELD BOX OF A MOBILE TERMINAL, PARTICULARLY FOR EASILY PREVENTING POWER NOISE GENERATED FROM COMPONENTS BY USING A HIGH CURRENT

摘要

PURPOSE: A structure of an electromagnetic wave shield box of a mobile terminal is provided to shield noise generated from a power amplifier without using an additional shield box. CONSTITUTION: A main PCB(Printed Circuit Board)(114) including various components mounted thereon is provided at an inner side of a receiving space(113) formed between an upper cover(111) and a lower cover(112). A shield frame(115) supports and shields electromagnetic noise. A keypad sheet(117) includes buttons provided on its upper surface and components installed on its lower surface. A main PCB side blocking wall(121) has a certain height with its upper end opened and is installed near a power amplifier(118). A shield frame side blocking wall(122) is installed at a lower surface of the shield frame(115) corresponding to the main PCB side blocking wall(121) to block noise generated from the power amplifier(118).