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SPICE Simulation (spice + simulation)
Selected AbstractsA configuration for realizing floating, linear, voltage-controlled resistance, inductance and FDNC elementsINTERNATIONAL JOURNAL OF CIRCUIT THEORY AND APPLICATIONS, Issue 5 2009R. Senani Abstract A configuration using current feedback amplifiers has been presented, which is capable of realizing linear, positive/negative voltage-controlled resistance, voltage-controlled inductance and voltage-controlled frequency-dependent negative conductance in floating form (and thereby, also in grounded form) from the same structure. The workability of the proposed configuration has been demonstrated by hardware implementation results using AD 844-type current feedback op-amps (CFOAs) and BFW-11-type JFETs and the workability in high-frequency range has been demonstrated by SPICE simulation using CMOS CFOAs. Copyright © 2008 John Wiley & Sons, Ltd. [source] MOS-integrable circuitry for multi-scroll chaotic grid realization: A SPICE-assisted proofINTERNATIONAL JOURNAL OF CIRCUIT THEORY AND APPLICATIONS, Issue 3 2009Gaurav Gandhi Abstract A MOS-integrable circuit realization of the class of Multi-Scroll Grid attractor using an implementation of nonlinear transconductor is presented. The design can be seen as the MOS-integrable circuit implementation of modified jerk equations presented in the literature (Int. J. Bifurcat. Chaos 2002; 12(1):23,41). The proposed design of Multi-Scroll Grid attractor is adequately supported by SPICE simulation results. Copyright © 2008 John Wiley & Sons, Ltd. [source] A simple spice model for traveling wave semiconductor laser amplifierMICROWAVE AND OPTICAL TECHNOLOGY LETTERS, Issue 7 2007Abhirup Das Barman Abstract An equivalent lumped element electric circuit model for traveling wave semiconductor laser amplifier has been developed using the rate equation for carriers. SPICE simulation of the circuits gives results in close agreement with the experimental data and values from sophisticated analyses. The modulation bandwidth and transient response were examined by including parasitic elements in the intrinsic model. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 1558,1561, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22483 [source] Cross-correlation-based trans-impedance amplifier for current noise measurementsINTERNATIONAL JOURNAL OF CIRCUIT THEORY AND APPLICATIONS, Issue 6 2009Gino Giusi Abstract This work proposes a cross-correlation-based trans-impedance amplifier for current noise measurements in the low-frequency range. The proposed solution is compared with the classical cross-correlation trans-impedance amplifier showing a lower background noise. Furthermore, a three-step measurement method, based on the new trans-impedance amplifier, is proposed to cancel the residual background noise. SPICE simulations and noise measurements performed on prototype circuits demonstrate the validity of the proposed approach. Copyright © 2008 John Wiley & Sons, Ltd. [source] Generation, modeling, and analysis of CCII-based gyrators using the generalized symbolic framework for linear active circuitsINTERNATIONAL JOURNAL OF CIRCUIT THEORY AND APPLICATIONS, Issue 3 2008Ramy A. Saad Abstract In this paper, CCII-based gyrators are synthesized, modeled, and analyzed using the generalized symbolic framework for linear active circuits. The systematic synthesis method using admittance matrix expansion, included in the framework, is applied to generate optimized nullor,mirror descriptions for the gyrator. The resulting CCII-based circuit representations for the gyrators, obtained from mapping nullor,mirror pairs in the ideal realizations with equivalent second-generation current conveyors (CCIIs), can be classified into two topologies according to the type of the CCII terminals handling the gyrator input and output signals. In topology I, the gyrator input and output terminals are CCIIs Y,Z -terminals, whereas in topology II, the gyrator input and output terminals are CCIIs X -terminals. The parasitic components within the synthesized circuits, associated with the actual CCIIs, are modeled and included in their expanded admittance matrices. Exact non-ideal analysis for two circuits belonging to the two topologies, involving the reduction of their expanded admittance matrices to port admittance matrices, is then carried out to investigate the practical functional performance for these circuits at their ports. The non-ideal performance analysis based on the CCII actual parasitic elements indicates that, from a practical perspective, the CCII-based gyrator circuits belonging to topology I are more efficient and suitable for the gyrator applications than those belonging to topology II in terms of bandwidth and operation at high frequencies. SPICE simulations are included to demonstrate the analytical results for the comparison between the practical performances of the two circuit topologies. Copyright © 2007 John Wiley & Sons, Ltd. [source] Generation and classification of Kerwin,Huelsman,Newcomb circuits using the DVCCINTERNATIONAL JOURNAL OF CIRCUIT THEORY AND APPLICATIONS, Issue 7 2009Ahmed M. Soliman Abstract New circuits realizing the Kerwin,Huelsman,Newcomb (KHN) and using three or four differential voltage current conveyor (DVCC) are generated from the basic KHN and inverted KHN block diagrams. The circuits are classified into two types, type A employs three DVCC and type B employs four DVCC. Each type includes four classes of circuits depending on the four possible integrator polarities. Each class can be realized by several circuits as will be demonstrated in the paper. All the eight possible sign combinations of the output voltages polarities are obtainable from the two types; four sign combinations from each type. The eight block diagrams are included to demonstrate the difference between each class of circuits. Spice simulation results demonstrating the practicality of the proposed filters are included. Copyright © 2008 John Wiley & Sons, Ltd. [source] | ||||||||||