Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Da-Rong Huang0
Huey-Ru Chuang0
Yuan-Kai Chu0
Date of Patent
February 24, 2009
Patent Application Number
11356293
Date Filed
February 17, 2006
Patent Primary Examiner
Patent abstract
A low noise amplifier including a first-stage signal amplifier, a second-stage signal amplifier and a gain control unit is disclosed. The first-stage signal amplifier is for receiving an input signal and outputting a first output signal accordingly. The second-stage signal amplifier is coupled to the first-stage signal amplifier for outputting a second output signal according to the first output signal. The second-stage signal amplifier includes a first output transistor for outputting the second output signal. The gain control unit includes a first variable resistance device coupled to an input terminal of the first output transistor for adjusting voltage gain of the second output signal.
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