Patent ID: 6965242

Claim:
A process for determining a magnitude of a noise of an electronic object to be measured, said process comprising: inputting an unmodulated sine signal (S in ) into the electronic object; and measuring an associated power level with a level meter, wherein (a) the level meter determines a sine power level ({circumflex over (P)} sin ) and a noise power level ({circumflex over (P)} noise ) separately, (b) the magnitude of the noise is the noise temperature T DUT of the object to be measured, and the (c) noise temperature T DUT is determined by the formula: T DUT = P sin k · B M · P MESS , noise P MESS , sin where P sin is the power level of the sine signal at the input to the object to be measured, P MESS,sin is the power level of the sine measured with intermediate circuitous inclusion of the object to be measured as measured with the level meter P MESS,Noise is the power level of the noise measured with intermediate circuitous inclusion of the object to be measured as measured with the level meter P CAL,noise the power level of the noise measured without intermediate circuitous inclusion of the object to be measured as measured with the level meter k the Boltzmann Constant, and B M is a bandwidth of the level meter.