ELECTRONIC TUNER AND MOBILE PHONE DEVICE USING THE SAME

PROBLEM TO BE SOLVED: To solve the problem that in the conventional mobile phone, a good reception sensitivity can not be obtained for an electronic tuner by transmission signals output from the mobile phone during call. SOLUTION: The mobile phone device includes: an input terminal 25 for television into which television broadcast signals are input; a high-frequency amplifier 26 which is inserted between the input terminal 25 for television and a first filter 27 and has an input 26a for controlling current for which a current value is controlled; an input terminal 22a for transmission signals into which part of transmission signals is input; and a current controlling portion 42 which detects part of transmission signals sent from the input terminal 22a for transmission signals and supplies a current controlling signal to the input 26a for controlling current. While the mobile phone 23 transmits transmission signals, a current value of the high-frequency amplifier 26 is set larger. COPYRIGHT: (C)2008,JPO&INPIT