Patent ID: 7405626
Filing Date: 2008-07-29
Classification: H03F

Abstract:
1. A distributed amplifier, comprising: a signal amplification unit having an output resistance; a RF signal input terminal provided for input of a RF input signal to the signal amplification unit; and a RF output terminal provided for output of a RF output signal from the signal amplification unit; a first biasing circuit providing a direct current (DC) bias signal to the signal amplification unit; a variable terminal resistance having a first end and a second end and providing a variable resistance to match with an output resistance of the signal amplification unit; and a second biasing circuit providing another DC bias signal to the variable terminal resistance, wherein the RF input signal is provided with a gain by the signal amplification unit and the RF output signal is generated from the signal amplification unit, and the variable resistance is selected to match with the output resistance of the signal amplification unit.