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In this work we present the realization of a hybrid model (hardware-software) for memristors based on the nonlinear dopant model for three window functions: Strukov, Joglekar and Prodromakis. Proposing a methodology that allows us to design nonlinear analog circuits with memristors in an easier and faster way using the tools of Simulink, Simscape and System Generator. In addition, we tested the functionality...
Physical and electromagnetic modelling of double barriers InGaAs/AlAs resonant tunneling diode has been carried out using 9 μm2 mesa devices with a peak current density of 1.2 mA/μm2 integrated with a coplanar waveguide resonator. A 100 GHz oscillator was realized and achieved an output power of 100 μW through exploiting the negative differential resistance feature of the diode. Validation of the...
The most of the memristor based applications which have been proposed so far have not considered the parasitic components. In this paper, we apply a generic memristor model which includes the parasitic effects to our proposed memristive logic architectures. First, we show that the current response of the memristor has the decaying oscillation when the unit step function is applied. Then we demonstrated...
The paper considers a new electric diagram of the microelectronic self-excited oscillator based on the bipolar transistor structure with negative resistance. The oscillator operates in oscillatory and relaxation modes. Chaotic mode of the self-excited oscillator was provided by installing additional components into a basic circuit. Results of the deterministic chaos microelectronic oscillator simulation...
Spin torque oscillators (STO) have drawn significant attention from the research community as potential replacements for electrical oscillators due to their simple and compact structure.
In the paper a deterministic chaos oscillator based on a bipolar and field-effect transistor structure with negative resistance is proposed and examined. A modified mathematical model of Anishchenko-Astakhov is proposed for describing the chaotic oscillation dynamics. The results of mathematical modelling and experimental research are obtained.
At Maximum power point tracking for photovoltaic power generation system technology, this paper explains the principles of photovoltaic power generation and the establishment of mathematical models. Combined with solar photovoltaic array output characteristics and principle of traditional P&O method, analyses of oscillation and misjudgment issues in P&O method are done. Improved variable step...
Considering simulations of electromagnetic transients and searching for better results, it is investigated the limits of the change of the representation of the longitudinal parameters in the model of infinitesimal unit of transmission lines' model. It is introduced a damping resistance in parallel to the impedance that represents the longitudinal parameters of transmission lines. Several simulations...
A simple oscillator with perfect output power using a series feedback and circuit matching is proposed. The oscillator is implemented by tuning the positive feedback of the source and gate of the transistor and provides a free-running oscillating signal of 12 GHz. The output power of the oscillator is 10.16 dBm. This result is in good agreement with simulation.
It is shown experimentally that active resistance of frequence dependent device keep his high value till the currents of several kiloampere at the frequencies from 60 kHz up to 200 kHz. It points out on the working capacity of device not only at operating current but at lightning strokes.
The phenomenon of metal-insulator-transition (MIT) in strongly correlated oxides, such as NbO2, have shown the oscillation behavior in recent experiments. In this work, the MIT based two-terminal device is proposed as a compact oscillation neuron for the parallel read operation from the resistive synaptic array. The weighted sum is represented by the frequency of the oscillation neuron. Compared to...
In RF wireless communication systems, oscillator plays the role of providing signals, therefore high stability and low phase noise oscillator is very important. This paper use the negative resistance theory of FET, let the circuit is in an unstable state. And the use of dielectric resonator (DR) as a signal source, design of the dielectric resonator oscillator (DRO) operating frequency is 10.5GHz...
Actively simulated grounded floating capacitance multipliers have been used in several applications ranging from filter to oscillator design as well as cancellation of parasitic capacitances. In this paper, a new electronically-controllable floating lossless capacitance multiplier (C-Multiplier) circuit is presented, which employs only one Voltage Differencing Current Conveyor (VDCC), one grounded...
Noise-aware Design, statistical modeling analysis and experimental verification of crystal oscillators fabricated using advanced SiGe-C BiCMOS technology are presented. The concept of Broadband stochastic equivalent circuit models extraction is introduced to properly account for variability and sensitivity of critical design parameters (e.g., Process, Power Supply, Temperature, Geometry). Engineering...
This paper studies the influence of different implementation methods of a simple control algorithm over the chaotic behavior of a specified circuit. Two new methods are presented: one is using a microcontroller and the other is using logical gates. The article also presents a unique approach to modelling a negative resistance as simple as possible, closely resembling a proposed mathematical dependency.
In this paper a PSPICE model of the equivalent circuit of the titanium-dioxide memristor is created based on its current-voltage relationship and using linear ionic drift model. By use of this computer model a Wien memristor generator is created. The oscillator circuit is analyzed and the basic relationships and time diagrams are given. The phase portrait of the system is also presented. The regulation...
We report a SPICE compatible closed form compact memristor model, for the temporal evolution of resistance in a memristor under the action of a programming voltage. This compact model compares well to published transition time formulae and known memristor behavior. We use the SPICE equivalent of the model in a novel Wien-Bridge oscillator signal conditioning circuit application.
In this paper we report a current-to-time converter (CTC) suitable for current sensor monitoring in low power applications. Based on a discrete resistence-to-frequency converter and a Giant MagnetoResistance (GMR) current sensor. Simulations have been done using a quasi-static electrical Verilog-A model for the GMR current sensor. A reduced set of parameters has been extracted to characterize the...
Novel differential-output quadrature oscillator employing two FB-VDBAs (Fully Balanced - Voltage Differencing Buffered Amplifiers) which are proposed for applications with fully differential architecture is described. This circuit can be also utilized as multi-phase oscillator with four independent single-ended outputs. Detailed analysis of real effects is included and its comparison with the results...
The paper proposes a novel implementation of a LC oscillator using an active inductor. The advantages of the method are discussed. The simulations prove the performance of the oscillator with an active inductor. The two phase oscillator based on two simulated CMOS inductors structure consists of a balanced differential CMOS circuit with negative intrinsic resistance and was simulated in a 0.18 μm...
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