Modeling of gunn domain effects in the output conductance of the high-frequency small-signal GaAs MESFET equivalent circuit

1992 ◽  
Vol 5 (14) ◽  
pp. 748-752 ◽  
Author(s):  
Mark A. Magerko ◽  
Kai Chang
Keyword(s):  
Equivalent Circuit ◽  
High Frequency ◽  
Small Signal ◽  
Gaas Mesfet ◽  
Output Conductance

A GaAs MESFET small-signal equivalent circuit including transmission line effects

1989 ◽  
Vol 36 (9) ◽  
pp. 1557-1563 ◽  
Author(s):  
T.A. Fjeldly ◽  
A. Paulsen ◽  
O. Jensen
Keyword(s):  
Transmission Line ◽  
Equivalent Circuit ◽  
Small Signal ◽  
Gaas Mesfet

A new analytical method to extract the small-signal equivalent circuit of high frequency FET transistors

2008 ◽  
Vol 50 (2) ◽  
pp. 453-457
Author(s):  
J. L. Olvera Cervantes ◽  
J. L. Medina Monroy ◽  
R. A. Chávez Pérez ◽  
A. Velázquez Ventura
Keyword(s):  
Equivalent Circuit ◽  
Analytical Method ◽  
High Frequency ◽  
Small Signal

scholarly journals Synchronous Machine Winding Modeling Method Based on Broadband Characteristics

2021 ◽  
Vol 11 (10) ◽  
pp. 4631
Author(s):  
Yu Chen ◽  
Xiaoqing Ji ◽  
Zhongyong Zhao
Keyword(s):  
Equivalent Circuit ◽  
High Frequency ◽  
Equivalent Circuit Model ◽  
Black Box ◽  
Synchronous Machine ◽  
Circuit Model ◽  
Modeling Method ◽  
Experimental Results ◽  
Box Model ◽  
Impedance Curve

The accurate establishment of the equivalent circuit model of the synchronous machine windings’ broadband characteristics is the basis for the study of high-frequency machine problems, such as winding fault diagnosis and electromagnetic interference prediction. Therefore, this paper proposes a modeling method for synchronous machine winding based on broadband characteristics. Firstly, the single-phase high-frequency lumped parameter circuit model of synchronous machine winding is introduced, then the broadband characteristics of the port are analyzed by using the state space model, and then the equivalent circuit parameters are identified by using an optimization algorithm combined with the measured broadband impedance characteristics of port. Finally, experimental verification and comparison experiments are carried out on a 5-kW synchronous machine. The experimental results show that the proposed modeling method identifies the impedance curve of the circuit parameters with a high degree of agreement with the measured impedance curve, which indicates that the modeling method is feasible. In addition, the comparative experimental results show that, compared with the engineering exploratory calculation method, the proposed parameter identification method has stronger adaptability to the measured data and a certain robustness. Compared with the black box model, the parameters of the proposed model have a certain physical meaning, and the agreement with the actual impedance characteristic curve is higher than that of the black box model.

scholarly journals A Small-Signal GFET Equivalent Circuit Considering an Explicit Contribution of Contact Resistances

2021 ◽  
Vol 31 (1) ◽  
pp. 29-32
Author(s):  
Anibal Pacheco-Sanchez ◽  
Javier N. Ramos-Silva ◽  
Eloy Ramirez-Garcia ◽  
David Jimenez
Keyword(s):  
Equivalent Circuit ◽  
Small Signal
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