Ntt Docomo, Inc.

Masahiro Sakai

Shinsuke Ogawa

Yousuke Iizuka

Signals are received with a wider power range even through the use of existing AGCs than by conventional mobile communication terminals. In an AGC on one antenna side, in order to enable reception of a signal at a higher level, a target TA of a dynamic range DA of this AGC is changed to a value 5 dB higher than a value defined as a standard TS. On the other hand, in an AGC on another antenna side, in order to enable reception of a signal at a lower level, a target TB of a dynamic range DB of this AGC is changed to a value 5 dB lower than the value defined as the standard TS.

Mobile communication terminal and method for controlling a plurality of receiving apparatuses mounted on mobile communication terminal

When the diversity reception is cut, communications with the base station are continued. When it is judged by the judgment section of the mobile communication terminal that a predetermined disconnection requirement for disconnecting diversity reception is satisfied, the gain control section of the digital baseband circuitryreduces the gain of the AGCB contained in the RF receiver circuitryB constituting the disconnection target by a fixed value at fixed times. Diversity reception is cut after the level of the signal output by the AGCB has reached zero.

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Yokohama, Japan

Masahiro Sakai