By Topic

IEE Proceedings - Circuits, Devices and Systems

Issue 2 • Date Apr 1994

Filter Results

Displaying Results 1 - 12 of 12
  • Performance improvement of MOSFET lasers by using trapezoidal gate MOSFETs

    Publication Year: 1994, Page(s):69 - 72
    Cited by:  Papers (2)  |  Patents (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (172 KB)

    A new technique to increase the output power level of laser MOSFETs (~0.1 mW) and to improve their performance (e.g. better efficiency, faster response). This technique uses a trapezoidal gate TG-MOSFET instead of the traditional rectangular gate device to pump carriers (electrons and holes) into its floating gate which acts as an optical resonant cavity besides being the active region where elect... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Effect of delay mismatch on a feedforward amplifier

    Publication Year: 1994, Page(s):140 - 144
    Cited by:  Papers (18)  |  Patents (9)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (292 KB)

    The suitability of feedforward amplifiers for satellite systems has thus far been limited by their poor overall DC to RF conversion efficiency. This is a consequence of the additional power amplifiers required to provide the distortion cancellation. In narrowband systems, other techniques have been used in preference to feedforward because they offer the advantages of improved efficiency, and redu... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Applying the controlled aliasing technique for fast prediction of the output response of nonlinear circuits driven by composite signals

    Publication Year: 1994, Page(s):65 - 68
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (212 KB)

    It is assumed that the transfer characteristic of a nonlinear circuit in its severe form is represented by a power series with six terms (fifth-order nonlinearity) and that the circuit is injected by a composite signal (arbitrary shape of excitation). An analysis based on the controlled aliasing technique is carried out to determine the amplitude of each output harmonic. Results show that this tec... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Matrix methods for the design of transconductor ladder filters

    Publication Year: 1994, Page(s):89 - 100
    Cited by:  Papers (4)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (672 KB)

    Matrix-based methods for the design of transconductor ladder filters are presented. These allow the realisation of any bandpass or lowpass prototype using only one or two values of transconductance. The new methods are illustrated by experimental results from a 1 MHz elliptic lowpass filter, a 400 kHz elliptic bandpass filter, a 400 kHz Chebyshev bandpass filter, and a PLL frequency-control loop, ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • High-fidelity FIR filters based on central-difference operators

    Publication Year: 1994, Page(s):111 - 120
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (776 KB)

    A procedure is described for designing asymmetric FIR lowpass filters with high-fidelity linear-phase passbands and equirippled stopbands. Generalisations include lowpass filters with differentiating or integrating passbands, and other more general types. The method involves the truncation and modification of an infinite series of central-difference operators representing the shift operator E... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Analogue- and binary-to-residue conversion schemes

    Publication Year: 1994, Page(s):135 - 139
    Cited by:  Papers (4)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (344 KB)

    New and efficient schemes for the conversion of analogue signals directly into binary residue format are presented, based on the well known analogue-to-binary conversion techniques of flash conversion and successive approximation. They are shown to perform as fast as the corresponding analogue-to-binary convertors. Also, a partitioning scheme is developed for binary-to-residue conversion for mediu... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • LLC-type series resonant convertor with PWM control

    Publication Year: 1994, Page(s):73 - 81
    Cited by:  Papers (3)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (444 KB)

    The steady-state analysis and performance characteristics of the LCC-type series resonant convertor (SRC) are presented. The analysis is based on the PWM control scheme for both continuous and discontinuous conduction mode of operations. By using the same control techniques, it is shown that the control characteristics of the LLC-type SRC are substantially improved over those of the conventional S... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Active RC filter based on simulation of dissipative LC filters

    Publication Year: 1994, Page(s):101 - 104
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (212 KB)

    A new class of active filters with all-pole lowpass response is proposed. The proposed circuits simulate the doubly terminated ladder filters realised by lossy capacitors and negatively dissipative inductors; that is, inductors accompanied with negative resistances. The number of required operational amplifiers is reduced to about two-thirds of that of the conventional leapfrog realisation. First,... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Pole-parameter analysis: a novel approach for the design of filters

    Publication Year: 1994, Page(s):121 - 128
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (452 KB)

    The paper introduces pole parameter analysis (PPA) as a novel approach useful in obtaining the realisable transfer functions to meet the prescribed specifications of a filter. Analytical expressions are obtained for the design parameters and performance indices, in terms of pole parameters ωp and θp that are introduced as the basis of PPA. Details have been given ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Analysis of nonlinearities in MOS floating resistor networks

    Publication Year: 1994, Page(s):82 - 88
    Cited by:  Papers (13)  |  Patents (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (416 KB)

    Expressions for the linearised V/I characteristics of a group of floating resistor structures employing MOS transistors operating in the triode mode are presented. Mobility-degradation effects are accurately modelled and identified as the major residual distortion source in most configurations. The application of common-mode signals to the gate and substrate terminals of a single device is shown t... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Improved passive model for transient prediction of GaAs E/D MESFET analogue switches

    Publication Year: 1994, Page(s):105 - 110
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (372 KB)

    An improved passive model of a GaAs MESFET is presented, where the intrinsic elements have a continuous dependence on gate, source and drain voltages for the benefit of transient prediction. Based on this passive model and circuit equations, the transient behaviour of analogue switches with GaAs E/D MESFETs is characterised with transfer time and transient error voltage in the time domain. An anal... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Simulation-based parameter extraction, its implementation and some applications

    Publication Year: 1994, Page(s):129 - 134
    Cited by:  Papers (8)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (424 KB)

    An interactive program for the extraction of transistor parameters has been developed using a SPICE-like circuit simulator instead of an explicit set of model equations. Consequently, many simulation capabilities (i.e. a variety of elements and their models, analyses and simulation modes) are available at the extractor level. Several optimisation methods are integrated into the program to provide ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.