Abstract: A multi band antenna device which can simultaneously design a first frequency band antenna and a second frequency band antenna within one wireless communication device is provided. The multi band antenna device includes a first band antenna unit that communicates a first frequency band signal, a first band driving circuit unit that is connected to the first band antenna unit and that is configured to perform signal processing of a corresponding first frequency band signal communicated in the first band antenna unit, a second band driving circuit unit that is connected to the first band antenna unit, and that is configured to perform signal processing of a second frequency band signal which has a frequency that is lower than a frequency of the first frequency band signal, and a first inductor unit that is connected between one end of the first band antenna unit and the second band driving circuit unit, and that is configured to serve as an inductor.

Abstract: A transmission method and apparatus of a mobile terminal including an antenna are provided. The transmission method includes determining a posture of the mobile terminal in an active state, updating a preset reference power by adding a power gain determined according to the posture of the mobile terminal, and transmitting a transmit signal amplified according to the updated reference power. Accordingly, the reference power is adjusted according to the posture of the mobile terminal, whereby it is possible to control the radiation pattern of antenna of the mobile terminal.

Abstract: A multi band antenna device which can simultaneously design a first frequency band antenna and a second frequency band antenna within one wireless communication device is provided. The multi band antenna device includes a first band antenna unit that communicates a first frequency band signal, a first band driving circuit unit that is connected to the first band antenna unit and that is configured to perform signal processing of a corresponding first frequency band signal communicated in the first band antenna unit, a second band driving circuit unit that is connected to the first band antenna unit, and that is configured to perform signal processing of a second frequency band signal which has a frequency that is lower than a frequency of the first frequency band signal, and a first inductor unit that is connected between one end of the first band antenna unit and the second band driving circuit unit, and that is configured to serve as an inductor.

Abstract: A transmission method and apparatus of a mobile terminal including an antenna are provided. The transmission method includes determining a posture of the mobile terminal in an active state, updating a preset reference power by adding a power gain determined according to the posture of the mobile terminal, and transmitting a transmit signal amplified according to the updated reference power. Accordingly, the reference power is adjusted according to the posture of the mobile terminal, whereby it is possible to control the radiation pattern of antenna of the mobile terminal.

Abstract: A method and an apparatus for controlling transmission power in a mobile terminal are provided. The method includes determining whether a human body touches the mobile terminal, comparing a current transmission power with a preset threshold power, when it is determined that the human body touches the mobile terminal, setting the transmission power to a value lower than the preset threshold power, when the current transmission power is equal to or higher than the preset threshold power, and outputting a signal with the set transmission power.