Telecommunications – Transmitter – Power control – power supply – or bias voltage supply
Reexamination Certificate
2006-01-03
2006-01-03
Vo, Nguyen T. (Department: 2685)
Telecommunications
Transmitter
Power control, power supply, or bias voltage supply
C455S234200
Reexamination Certificate
active
06983133
ABSTRACT:
Disclosed is a linearization method in a mobile communication terminal wherein automatic gain control signals are divided into a plurality of entry regions, and which includes an initial value for a first entry region among the plurality of entry regions, a resolution constant and a slope character value for each entry region for generating a linear automatic gain control signal which guarantee a linearity of amplification gain of an amplifier. The linearization method comprises the steps of: detecting a corresponding entry region using a preset number of bits from the automatic gain control signal which is represented by a plurality of bits and detecting a position value of the detected entry region using the remaining bits except the preset number of bits; generating an initial value of a second entry region using the initial value of the first entry region, an entry region size value and a slope value of the first entry region presented by the resolution constant and a slope character value of the first entry region, and then sequentially generating initial values of the following entry regions using an initial value of a previous entry region, the entry region size value, a slope value of a previous entry region to thereby generate an initial value of the detected entry region; and generating the linear automatic gain control signal by adding a value obtained by multiplying the slope value of the detected entry region by the position value of the entry region and an initial value of a corresponding entry region which is generated by the initial value generator.
REFERENCES:
patent: 5627857 (1997-05-01), Wilson
patent: 5999718 (1999-12-01), Wang et al.
Dilworth & Barrese LLP
Samsung Electronics Co,. Ltd.
Vo Nguyen T.
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