MOBILE TERMINAL HAVING A TUNING PART FOR CHANGING RADIATION PATTERNS, ESPECIALLY CONCERNED WITH CONFIGURING A TUNING PART THAT CHANGES RADIATION PATTERNS BY VARYING THE CURRENT DISTRIBUTION CONDITIONS OF A GROUND

摘要

PURPOSE: A mobile terminal having a tuning part to change radiation patterns is provided to lower the SAR(Specific Absorption Rate) value of a mobile terminal and improve antenna operation characteristics by configuring a tuning part that changes antenna radiation patterns by varying the current distribution conditions of a ground provided to a folder. CONSTITUTION: A mobile terminal comprises a main body(10) and a folder. The main body(10) and the folder, in which PCBs(13) are embedded respectively, have grounds(400) installed at their respective PCBs(13). A hinge device for connecting the main body with the folder is installed at one end of the main body(10). An antenna(40) is installed at the top of the main body(10). The mobile terminal comprises a tuning part(100). The tuning part(100), neighboring with the antenna(40), varies the current distributions of the main body-side ground(400) and changes the radiation pattern of the antenna(40). At one end(101) of the tuning part(100), a connection unit(300) is installed so as to be connected with an earthing part(13a). The other end(102) of the tuning part(100), far from the earthing part(13a), is near to the antenna(40).