Apparatus for mobile communication system which performs...

Telecommunications – Transmitter – Power control – power supply – or bias voltage supply

Reexamination Certificate

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Details

C455S108000, C455S110000, C332S145000

Reexamination Certificate

active

07110730

ABSTRACT:
A mobile communication system has a mobile phone in which a voltage is set corresponding to the characteristic variation of a PA even when a PA having characteristic variation is used. The mobile phone employs a polar loop method, which comprises an antenna (1) for transmission and reception of signal waves; an antenna switch (2) for switching the transmission mode and the reception mode; a BBLSI (3) having a function to control the transmission and reception; an RFIC (4) having a function for modulating and demodulating the transmitted and received signals; and a PA (5) for amplifying up to the target output power by means of the amplitude modulation at the time of the transmission.

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