A comparison of experimental results to those in "evaluation of bipolar junction transistor transconductance in practical applications"

1997 ◽  
Vol 40 (1) ◽  
pp. 114-115
Author(s):  
E.M. Kim ◽  
T.F. Schubert
Keyword(s):  
Experimental Results ◽  
Practical Applications ◽  
Bipolar Junction Transistor ◽  
Junction Transistor

scholarly journals Development of an Electrothermal Simulation Tool for Integrated Circuits

2021 ◽  
Author(s):  
Sara Sharifian Attar
Keyword(s):  
Steady State ◽  
Integrated Circuits ◽  
Thermal Modeling ◽  
Experimental Results ◽  
Junction Temperature ◽  
Collector Current ◽  
Bipolar Junction Transistor ◽  
Circuit Simulator ◽  
Junction Transistor ◽  
Electrothermal Simulation

The goal of this research was to develop a capability for the electrothermal modeling of electronic circuits. The objective of the thermal modeling process was to create a model that represents the thermal behavior of the physical system. The project focuses on electrothermal analysis at devices and chip level. A novel method to perform electrothermal analysis of integrated circuits based on the relaxation approach is proposed in this research. An interface program couples a circuit simulator and a thermal simulator. The developed simulator is capable of performing both steady state and transient analaysis at devices and chip level. The proposed method was applied to perform electrothermal analysis of Silicon Bipolar Junction Transistor (BJT) to predict the temperature distribution and the device performance in a circuit. Thermal nonlinearity due to temperature-dependent material parameters in the context of thermal modeling of the device and circuit has also been considered. The DC characteristics of the device were investigated. The obtained results indicate that the operating point of the device varies while the device reaches its junction temperature. The accuracy of the electrothermal simulator has been evaluated for steady state analysis. The experimental results of a BJT amplifier were compared to the simulator results of the similar circuit. The electrothermal simulation results of BJT amplifier circuit indicate a good agreement with the available experimental results in terms of power dissipation, collector current and base-emitter voltage. The performance of the electrothermal simulator has been evaluated for tansient analysis. A current mirror circuit using Si NPN BJTs was simulated. According to the electrical simulator, the output current follows the reference current immediately. Nonetheless, the electrothermal simulator results depict that the load current has delay to reach a constant value which is not the same as the reference current, due to the influence of thermal coupling and self heating. The obtained results are in agreement with the available results in literature.

N–p–n bipolar-junction-transistor detector with integrated p–n–p biasing transistor—feasibility study, design and first experimental results

2006 ◽  
Vol 21 (2) ◽  
pp. 194-200
Author(s):  
Giovanni Verzellesi ◽  
Davide Bergamini ◽  
Gian-Franco Dalla Betta ◽  
Claudio Piemonte ◽  
Maurizio Boscardin ◽  
...  
Keyword(s):  
Feasibility Study ◽  
Study Design ◽  
Experimental Results ◽  
Bipolar Junction Transistor ◽  
Junction Transistor

scholarly journals Development of an Electrothermal Simulation Tool for Integrated Circuits

2021 ◽  
Author(s):  
Sara Sharifian Attar
Keyword(s):  
Steady State ◽  
Integrated Circuits ◽  
Thermal Modeling ◽  
Experimental Results ◽  
Junction Temperature ◽  
Collector Current ◽  
Bipolar Junction Transistor ◽  
Circuit Simulator ◽  
Junction Transistor ◽  
Electrothermal Simulation

The goal of this research was to develop a capability for the electrothermal modeling of electronic circuits. The objective of the thermal modeling process was to create a model that represents the thermal behavior of the physical system. The project focuses on electrothermal analysis at devices and chip level. A novel method to perform electrothermal analysis of integrated circuits based on the relaxation approach is proposed in this research. An interface program couples a circuit simulator and a thermal simulator. The developed simulator is capable of performing both steady state and transient analaysis at devices and chip level. The proposed method was applied to perform electrothermal analysis of Silicon Bipolar Junction Transistor (BJT) to predict the temperature distribution and the device performance in a circuit. Thermal nonlinearity due to temperature-dependent material parameters in the context of thermal modeling of the device and circuit has also been considered. The DC characteristics of the device were investigated. The obtained results indicate that the operating point of the device varies while the device reaches its junction temperature. The accuracy of the electrothermal simulator has been evaluated for steady state analysis. The experimental results of a BJT amplifier were compared to the simulator results of the similar circuit. The electrothermal simulation results of BJT amplifier circuit indicate a good agreement with the available experimental results in terms of power dissipation, collector current and base-emitter voltage. The performance of the electrothermal simulator has been evaluated for tansient analysis. A current mirror circuit using Si NPN BJTs was simulated. According to the electrical simulator, the output current follows the reference current immediately. Nonetheless, the electrothermal simulator results depict that the load current has delay to reach a constant value which is not the same as the reference current, due to the influence of thermal coupling and self heating. The obtained results are in agreement with the available results in literature.

Random Forces Resulting From Internal Two-Phase Flow on Bends and Tees

2006 ◽  
Author(s):  
E. de Langre ◽  
J. L. Riverin ◽  
M. J. Pettigrew
Keyword(s):  
Two Phase Flow ◽  
Experimental Results ◽  
Time Dependent ◽  
Phase Flow ◽  
Water Mixture ◽  
Dimensionless Form ◽  
Two Phase ◽  
Practical Applications ◽  
Random Forces

The time dependent forces resulting from a two-phase air-water mixture flowing in an elbow and a tee are measured. Their magnitudes as well as their spectral contents are analyzed. Comparison is made with previous experimental results on similar systems. For practical applications a dimensionless form is proposed to relate the characteristics of these forces to the parameters defining the flow and the geometry of the piping.

scholarly journals Self-Consistent Solution of the Multi Band Boltzmann, Poisson and Hole-Continuity Equations

VLSI Design ◽  
1998 ◽  
Vol 6 (1-4) ◽  
pp. 257-260
Author(s):  
Surinder P. Singh ◽  
Neil Goldsman ◽  
Isaak D. Mayergoyz
Keyword(s):  
Boltzmann Transport Equation ◽  
The Novel ◽  
Boltzmann Transport ◽  
One Dimensional ◽  
Bipolar Junction Transistor ◽  
Continuity Equations ◽  
The Poisson Equation ◽  
Curvilinear Grid ◽  
Consistent Solution ◽  
Junction Transistor

The Boltzmann transport equation (BTE) for multiple bands is solved by the spherical harmonic approach. The distribution function is obtained for energies greater than 3 eV. The BTE is solved self consistently with the Poisson equation for a one dimensional npn bipolar junction transistor (BJT). The novel features are: the use of boundary fitted curvilinear grid, and Scharfetter Gummel type discretization of the BTE.

Nano World: A Novel Path for Modern Drug Discovery

2014 ◽  
Vol 490-491 ◽  
pp. 123-128 ◽  
Author(s):  
Nishka Ranjan ◽  
A.H. Manjunatha Reddy
Keyword(s):  
Drug Discovery ◽  
Lipid Membranes ◽  
Biological Response ◽  
Circuit Element ◽  
Bipolar Junction Transistor ◽  
Modern Drug ◽  
Pegylated Nanoparticles ◽  
Traditional Drug ◽  
Junction Transistor ◽  
Self Differentiation

The last two decades have witnessed a plethora of novel biomaterials that work significantly in the discovery of drugs and the point check of drugs, Biosensors. PLGA (Poly-(L-Lactide-co-glycolic Acid)), has already been shown to be a substrate for manufacture of substrates for OFETs, that in the future would be the forefront of electroceuticals. But, Polylactic Acid (PLA) derived and pegylated nanoparticles generated scaffolds, promote neural self-differentiation, nanowires derived from Polythiophene (PTs) can be utilised in the area of biosensors. Similarly, PT derived PEDOT:PSS(poly (3,4-ethylenedioxythiophene) poly (styrenesulfonate) polymer doped with appropriate cations is useful to manipulate directly the biological response of cells on the same grounds, organic electrochemical transistors (OECTs) based on PEDOTPSS coupled with bilayer lipid membranes (BLMs) were shown to act as ion-to-electron converters. A solid-state ion bipolar junction transistor (IBJT) has been developed to serve as a circuit element for neurotransmitter signal delivery. Consequently, the traditional drug discovery methods have far gone by. This era demands a much more modified and multiple disciplined methods for modern drug discovery. This review gives an insight and instance of this paradigm.

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