Latter sections of this paper describe a Verilog-A implementation of the EKV3 MOS transistor model.
The open-source computer-aided design tools Qucs, QucsStudio and ngspice all support Verilog-A as a hardware description language for compact model standardization.
The paper discusses links between compact models and design methodologies, finally introducing elements of compact model standardization. This invited paper summarizes recent MOS-AK open-source compact model standardization activities and presents advanced topics in metal–oxide–semiconductor field-effect transistor modelling, focusing in particular on analogue/radio frequency applications. SUMMARYMOS-Modelle und Parameterextraktion Arbeitskreis (MOS-AK) is a European, independent compact modelling forum created by a group of engineers, researchers and compact modelling enthusiasts to promote advanced compact modelling techniques and model standardization using high-level behavioural modelling languages such as VHDL-AMS and Verilog-A. These new modelling techniques a compact model for a 10 GHzīand width spiral inductor integrated on silicon is introduced, itsĬompact model presented, and finally its simulation performanceĬompared with published measured device data. With embedded behavioural components whose non-linear propertiesĪre functions of AC input signal frequency. Number of novel modelling and circuit simulation techniques thatĪllow, and enhance, the construction of compact device models
The main purpose of this paper is to introduce a Signal frequency simulation employing Harmonic Balance steady (FEDD) models, non-linear current/voltage static and dynamicĮquation-Defined Device (EDD) models and user controlled swept Introduction of Frequency Dependent Equation-Defined Device Simulators this situation is changing, particularly through the
#Qucs log function license#
The recent improvements in General Public License (GPL) circuit This assumption can give rise to significant modelling errors. Network component values are assumed not to be functions ofĪC input signal frequency. Operating at specified DC bias conditions, where the electrical Small signal network analysis of a linear or non-linear circuit SPICE AC circuit simulation is fundamentally a Simulations also confirm the capability to satisfy mission requirements. It is shown that the manufactured attitude control system fulfils all system requirements.
#Qucs log function verification#
Lastly, the testing and verification are performed, by measuring the performance of the manufactured hardware, circuit simulations and attitude control simulations. In-house manufacturing process of magnetorquers, using a custom 3D-printer setup, is described.
#Qucs log function serial#
The design is based on several theoretical and practical considerations with emphasis on high power efficiency, such as effects of parallel and serial magnetorquer connections, modelling the magnetorquers with equivalent circuit models for finding of suitable driving frequency and extrapolation methods for efficient dipole moment usage. Mission requirements analysis and attitude system requirements derivation are presented, followed by actuator trade-off and selection, with detailed design of the complete attitude control system, including air-cored type of magnetorquer actuators and their drivers, made of H-bridge and filtering components. The satellite, developed by Finnish Centre of Excellence, needs to maintain a spin rate of 24 ∘/s and precise pointing of the spin axis toward the Sun for the particle telescope instrument, as well as to reach 130 ∘/s spin rate for the deployment of the plasma brake. Magnetorquer based attitude control system capable of attaining high spin rates and precise pointing control is required for a 3U CubeSat satellite FORESAIL-1.
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