Gain control device of transmitter in mobile communication...

Details Gain control device of transmitter in mobile communication... Gain control device of transmitter in mobile communication...

2007-03-13

2007-03-13

Pascal, Robert (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including temperature compensation means

C330S285000

Reexamination Certificate

active

11122186

ABSTRACT:
A gain control device of a transmitter in a mobile communication terminal is provided. The device includes a temperature sensor for sensing an external temperature, a power amplifying module for amplifying a radio frequency output, a gain control circuit for controlling a voltage gain of the power amplifying module, a fixed gain circuit for providing a fixed voltage gain to the power amplifying module, a switch for switching to connect the power amplifying module to one of the gain control circuit and the fixed gain circuit, and a controller for generating a control signal to control the switch depending on the sensed external temperature.

REFERENCES:
patent: 6677823 (2004-01-01), Terosky et al.
patent: 2005/0200406 (2005-09-01), Dauphinee et al.

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