chaotic circuits coupled by one resistor. By carrying out that our very simple coupled circuit can exhibit spatiotemporal chaos as well as quasi-synchronizations of chaos in spite of tha t the number of chaotic subcircuit.s is only four. We consider that our model would be good model to clarify mechanism and characteristics of spatiotemporal chaos because it is the simplest real physical system...

The fast development of computer power and computational algorithms has made it possible to design complex transducers and arrays using computer simulation. Practical examples are given here for transducer modeling using 3-D finite element method (FEM) instead of the traditional 1-D equivalent circuit models. The merits and deficiencies of the frequency domain and time domain FEM formulations w...

The development of circuit devices can involve both physical and computer simulation experiments. Here, we discuss statistical solutions for both design of the physical experiment and optimization for the calibration of the computer model. In both cases, we can view the problem as one of optimization, and we rely upon treed Gaussian processes to model the data and guide our design choices.

A newmethod of the symbolic circuit tolerance analysis has been proposed. The approach is based onMiddlebrook’s extra element theorem and the generalized parameter extraction method. It does not need the matrix network description or presentation as algebraic sets or topological graphs. The proposed techniques have been realized in the computer program (Toleralize). To verify the theoretical an...

The purpose of this paper is to design a portable, light weight ECG acquisition circuit for real time monitoring of ECG of cardiac patients. The signal acquired from the body using acquisition circuit is then displayed onto the computer using the sound port as a serial interface between circuit and PC. The real time acquired signal is then analyzed using MATLAB. MATLAB program amplifies and fil...

Abstract : In this paper an interesting and famous realistic electronic circuit problem is discussed using the Adomian Decomposition Method (ADM) is presented. To illustrate the effectiveness of the ADM an example from linear time-varying electrical circuit problem have been considered and compared with the Runge-Kutta Butcher algorithm (RKB)[5] and with exact solutions of the problems, and are...

This paper presents simple lumped element equivalent circuit for the coplanar waveguide (CPW) square spiral inductor. The circuit is based on physical modelling which takes into consideration the parasitic effects inherent in the CPW spiral inductor. The obtained scattering parameters are in good agreement with fullwave and quasi-static results available in the literature. Such a simple circuit...

The power consumption of a digital circuit can be reduced by decomposing it into sub circuits which can be turned off when inactive. Power can also be reduced by careful state encoding. Clock-gating techniques have been shown to be very effective in the reduction of the switching activity in sequential logic circuits. Modeling a given circuit as a finite-state machine, we formulate its decompos...

In this report, we propose an analog circuit that implements a locomotion controller for a quadruped walking robot. Animal locomotion, such as walking, running, swimming and flying, is based on periodic rhythmic movements driven by the biological neural network, called the central pattern generator (CPG). In recent years, many researchers have applied the CPG to locomotion controller for walkin...

A generalized parameter-level statistical MOS model, called SMOS, capable of generating statistically significant model decks from intraand inter-die parameters statistics is described. Calculated model decks preserve the inherent correlations between model parameters while accounting for the dependence of parameter variance on device separation distance and device area. Using a Monte Carlo app...