Patent ID: 8249678

Claim:
A communication apparatus comprising: a first antenna having a first resonant frequency; a first frequency modification unit for modifying the first resonant frequency of the antenna; a function operation unit activating a plurality of functions; a control unit controlling the first frequency modification unit to modify the first resonant frequency in accordance with an operational state of the communication apparatus, based on a function activated by the function operation unit, wherein upon activation of a specific function from among the plurality of functions by the function operation unit, the control unit controls the first frequency modification unit to modify the first resonant frequency to a higher frequency; a display unit; and a sound output unit, wherein, when the specific function comprises operating the display unit, or operating the function operation unit, the resonant frequency is set to a first frequency, and wherein, when the specific function comprises outputting sound by the sound output unit, the resonant frequency is set to a second frequency higher than the first frequency.