MOBILE TELECOMMUNICATION APPARATUS

摘要

A mobile telecommunication apparatus reduces current around a control circuit on a printed circuit board so as to lessen background noise and to improve the r adiation characteristics. The mobile telecommunication apparatus includes a printed circu it board located in a body of the mobile telecommunication apparatus; a radio circuit inc luding a modulator circuit and a demodulator circuit arranged on the printed circuit bo ard; a control circuit including a voice circuit for processing a voice signal arranged on the printed circuit board; a first earth conductor for grounding the radio circuit; a second earth conductor for grounding the control circuit and being continuous with the first earth conductor; an antenna connected to the radio circuit; and a slit arranged betwee n the first earth conductor and the second earth conductor.