1998
DOI: 10.1109/22.734558
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A new extraction method for the two-parameter FET temperature noise model

Abstract: This paper presents a direct extraction method for the associated noise temperatures T d and Tg in the field-effect transistor (FET) temperature noise model. The method is related to nodal analysis of circuits. T d and Tg are extracted from the small-signal model parameters and the noise parameters of the device. It is also theoretically shown that there exist source admittances that cancel the thermal noise contribution at the output from either T d or Tg in the model. Finally, a commercially available GaAs p… Show more

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Cited by 15 publications
(8 citation statements)
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“…Figure 13 shows the noise temperatures are presented as a function of drain current for commercially available lownoise GaAs PHEMT (NEC NE32500). 15 The results show that T g equals the ambient temperature in the lower drain current ranges, and T d increase with the increase of drain current. Figure 14 shows the plots of PRC noise model parameters versus drain current based on wafer measurement for low-noise GaAs PHEMT.…”
Section: Noise Modelmentioning
confidence: 87%
“…Figure 13 shows the noise temperatures are presented as a function of drain current for commercially available lownoise GaAs PHEMT (NEC NE32500). 15 The results show that T g equals the ambient temperature in the lower drain current ranges, and T d increase with the increase of drain current. Figure 14 shows the plots of PRC noise model parameters versus drain current based on wafer measurement for low-noise GaAs PHEMT.…”
Section: Noise Modelmentioning
confidence: 87%
“…This model can be used for simulating the frequency dependence of the noise parameters [4]. Sometimes, a two or even three-parameter temperature noise model can be used [5]. The physical temperatures of the drain, gate and the gate-to-source resistances are raised in order to increase their noise power contribution in these models.…”
Section: Noise Modellingmentioning
confidence: 99%
“…DC and S-parameter of many GaAs and InP transistors were measured on wafer both at room temperature and cryogenic temperature. From these measurements we could extract the noise models [6][7][8][9][10][11][12][13][14] which were later used at cryogenic temperatures for the amplifier design. At low temperature the transconductance of both InP and GaAs transistors increase, Figs.…”
Section: Device Modelingmentioning
confidence: 99%