*Corresponding author Abstract SPICE compatible equivalent circuits were developed to facilitate the analysis and envelope simulation of electric circuits driven by modulated signals. The circuits are based on a novel complex phasor domain transformation. The proposed method facilitates simulation of any general linear circuit driven by a modulated signal such as AM, FM or PM. Simulation time b...

An implementation of flexible circuit simulation through userdefined enhancements of “traditional” circuit analysis algorithms is presented. In particular, enhancements of the DC Transfer Curve analysis are used for implementation of mixed-domain simulation as required in analysis of self-heating effects of GaAs devices, while enhancements of time-domain analysis are used for simulation of mixe...

This paper proposes a low voltage CMOS Nano power current reference circuit and presents its performance with circuit simulation in 180nm UMC CMOS technology. The proposed circuit consists of start-up, Bias-voltage, currentsource sub-circuits with most of the MOSFETs operating in sub-threshold region. Simulation results shows that the circuit generates a stable reference current of 4-nA in supp...

The analysis and equivalent circuit modeling of square patch FSS adopting an efficient vector-fitting is proposed. The simulations of microstructure are performed with CST Microwave Studio on single-substrate for different physical parameters, angle of incidences and polarizations. Then circuit model is extracted and developed using vector-fitting tool and implemented in SPICE (Simulation Progr...

Track circuit coding can be realized by Train Control Center in Highspeed Railway to keep the train running safe. This paper looks into the track circuit coding method using expert system, in which the reasoning process of track circuit coding was realized using software simulation with the data of Beijing-Shanghai High Speed Railway. Combined with test cases, the joint debugging is realized an...

This paper deals with digital simulation of Class D inverter fed induction heater system. This system has an advantage like reduced volume and switching losses. The circuit operates under zero voltage switching. The circuit models are developed for the open and closed loop system and they are used for simulation studies. The simulation results of open and closed loop systems are presented.

Design and construction of a stable current supply with protection circuits are described. The reported circuit provides a high-stable and high-level current variable from 0.5-1.2 A with the protect ion circuits to prevent over load current, voltage and off-range temperature operation. A detailed analysis of the circuit parameters is given and the time behaviors of the load voltage/current and ...