This paper reports that a 4H-SiC MESFET （Metal Semiconductor Field Effect Transistor） large signal drain current model based on physical expressions has been developed to be used in CAD tools. The form of drain curr...This paper reports that a 4H-SiC MESFET （Metal Semiconductor Field Effect Transistor） large signal drain current model based on physical expressions has been developed to be used in CAD tools. The form of drain current model is based on semi-empirical MESFET model, and all parameters in this model are determined by physical parameters of 4H-SiC MESFET. The verification of the present model embedded in CAD tools is made, which shows a good agreement with measured data of large signal DC I-V characteristics, PAE （power added efficiency）, output power and gain.展开更多
High frequency modeling of quantum-well(QW) laser diodes for optoelectronic integrated circuit(OEIC) design is discussed in this paper.Modeling of the intrinsic device and the extrinsic components is discussed by acco...High frequency modeling of quantum-well(QW) laser diodes for optoelectronic integrated circuit(OEIC) design is discussed in this paper.Modeling of the intrinsic device and the extrinsic components is discussed by accounting for important physical effects at both dc and high frequency.The concepts of equivalent circuits representing both intrinsic and extrinsic components in a QW laser diode are analyzed to obtain a physics-based high frequency model.The model is based on the physical rate equations,and is versatile in that it permits both small-and large-signal simulations to be performed.Several procedures of the high frequency model parameter extraction are also discussed.Emphasis here is placed on validating the model via a comparison of simulated results with measured data of the small-signal modulation response,obtained over a wide range of optical output powers.展开更多
如今直流分布式电源系统(distributed power system,DSP)正以其冗余度高、控制灵活等优点而被广泛地应用于通信、航空航天、计算机等各个领域。但是由于系统内部各个单元模块自身,DSP、以及模块之间相互影响的复杂性,使得国内目前直流...如今直流分布式电源系统(distributed power system,DSP)正以其冗余度高、控制灵活等优点而被广泛地应用于通信、航空航天、计算机等各个领域。但是由于系统内部各个单元模块自身,DSP、以及模块之间相互影响的复杂性,使得国内目前直流分布式电源系统的研究与国外相比存在较大的差距。本文就DC DPS内部各个模块自身、DC DPS的建模方法、稳定性分析作一总结。展开更多
文摘This paper reports that a 4H-SiC MESFET （Metal Semiconductor Field Effect Transistor） large signal drain current model based on physical expressions has been developed to be used in CAD tools. The form of drain current model is based on semi-empirical MESFET model, and all parameters in this model are determined by physical parameters of 4H-SiC MESFET. The verification of the present model embedded in CAD tools is made, which shows a good agreement with measured data of large signal DC I-V characteristics, PAE （power added efficiency）, output power and gain.
基金Supported by the National Natural Science Foundation of China (Grant No.6053-6010)Program for New Century Excellent Talents
文摘High frequency modeling of quantum-well(QW) laser diodes for optoelectronic integrated circuit(OEIC) design is discussed in this paper.Modeling of the intrinsic device and the extrinsic components is discussed by accounting for important physical effects at both dc and high frequency.The concepts of equivalent circuits representing both intrinsic and extrinsic components in a QW laser diode are analyzed to obtain a physics-based high frequency model.The model is based on the physical rate equations,and is versatile in that it permits both small-and large-signal simulations to be performed.Several procedures of the high frequency model parameter extraction are also discussed.Emphasis here is placed on validating the model via a comparison of simulated results with measured data of the small-signal modulation response,obtained over a wide range of optical output powers.
文摘如今直流分布式电源系统(distributed power system,DSP)正以其冗余度高、控制灵活等优点而被广泛地应用于通信、航空航天、计算机等各个领域。但是由于系统内部各个单元模块自身,DSP、以及模块之间相互影响的复杂性,使得国内目前直流分布式电源系统的研究与国外相比存在较大的差距。本文就DC DPS内部各个模块自身、DC DPS的建模方法、稳定性分析作一总结。
