Patent ID: 7054602

Claim:
A method for calibrating one or more amplifiers ( 100 , 200 ) comprising the steps of: i) generating a noise signal (N a +N i ) produced by said one or more amplifiers ( 100 , 200 ) when no input signal (S i +N i ) is connected (Alt. 2) to at least one amplifier of said one or more amplifiers ( 100 , 200 ); and ii) using said noise signal (N a +N i ) as a calibrating signal for estimating a corresponding gain (G) of said one or more amplifiers ( 100 , 200 ) by measuring ( 600 ) at at least one output of said one or more amplifiers ( 100 , 200 ) the amount of noise (S tot ) of said one or more amplifiers ( 100 , 200 ), whereby said one or more amplifiers can be calibrated using said calibrating signal as a reference signal.