GROUND STRUCTURE OF DIGITAL ELEMENT FOR DIGITAL TUNER TO REDUCE THE INTERFERENCES BETWEEN ANALOG ELEMENT AND DIGITAL ELEMENT

摘要

PURPOSE: A ground structure is provided to achieve improved performance of tuner by separating grounds of an analog element and digital element, thereby preventing interferences between the analog element and the digital element. CONSTITUTION: A digital tuner(100) comprises a square frame(110); a PCB(130) having one surface on which an analog element(131) and a digital element(133) are mounted, wherein the PCB is fixed in the frame, and has a hole(137) formed in the portion mounted with the digital element; and covers(120) coupled to the top and bottom of the frame. A resistance(140) is mounted on the other surface of the PCB in such a manner that the nude resistance is electrically coupled to the digital element through the hole of the PCB. A bending piece(125) is arranged on the cover to be coupled to the frame such that the digital element is grounded to the cover through the resistance and the bending piece when the cover is coupled to the frame.