Patent ID: 7245890
Filing Date: 2007-07-17
Classification: H03G

Abstract:
1. A high frequency variable gain amplification device for causing gain to vary in accordance with a control signal externally provided thereto, the control signal including a first control signal and a second control signal, and for amplifying an input high frequency signal, the device comprising: an amplifier operable to amplify the input high frequency signal; a feedback circuit operable to cause a feedback impedance to vary in accordance with the first control signal, which is externally provided, the first control signal being associated with a desired signal power level of the input high frequency signal, and to cause an output signal of the amplifier to be fed back to an input side of the amplifier; and a current consumption adjustment circuit operable to adjust current consumption of the amplifier in accordance with the second control signal, which is externally provided, the second control signal being associated with an undesired signal power level of the input high frequency signal.