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IET Circuits, Devices & Systems

Issue 4 • August 2007

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Displaying Results 1 - 6 of 6
  • VLSI implementations of efficient isotropic flexible 2D convolvers

    Publication Year: 2007, Page(s):263 - 269
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (395 KB)

    A new 2D isotropic convolver designed to operate on 256 grey-level images is presented. When realised by using 90 nm IV CMOS technology, the core of the proposed circuit exhibits a 1.25-GHz running frequency with an average power dissipation of only sime1 mW/MHz. The new convolver can also be efficiently realised using FPGAs. View full abstract»

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  • Dynamic MAGFET model for sensor simulations

    Publication Year: 2007, Page(s):270 - 274
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (213 KB)

    A new model for a magnetic-sensitive split-drain MOSFET (MAGFET) consisting of only two n-channel MOS transistors (NMOSTs) in the equivalent sub-circuit is described. The model developed is based on the non-quasi-static MOST model of a conventional NMOST, modified to include the effects of the Lorentz force. On the basis of the results of three-dimensional numerical device simulations, it is shown... View full abstract»

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  • Structure of complex elliptic Gm-C filters suitable for fully differential implementation

    Publication Year: 2007, Page(s):275 - 282
    Cited by:  Papers (4)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (953 KB)

    The complexification method of Gm-C filters is presented. Unlike the previously reported method, the proposed method is suitable for the realisation of the fully differential complex Gm-C filters with finite zeros. Based upon the proposed method, complexification of the third-order elliptic Gm-C filter is demonstrated and the practical transistor-level simulation results of the resulting complex f... View full abstract»

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  • Statistical static timing analysis using symbolic event propagation

    Publication Year: 2007, Page(s):283 - 291
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (123 KB)

    Accurate estimation of critical path delays in circuits is a challenging task, particularly when variations due to manufacturing are considered. For small circuits (such as standard cells), simulation-based characterisation is preferred for better accuracy. For large circuits, statistical timing analysis techniques are used, but these methods typically yield a pessimistic overestimate. In view of ... View full abstract»

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  • Systematic methodology for designing low power direct digital frequency synthesisers

    Publication Year: 2007, Page(s):293 - 304
    Cited by:  Papers (10)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (503 KB)

    The overall operation of a direct digital frequency synthesiser (DDFS) is based on a look-up table method, which performs functional mapping from phase to sine amplitude. The spectral purity of the conventional DDFS is determined by the resolution of the values stored in the sine table ROM. However, large ROM storage means higher power consumption, increased silicon area, lower reliability, lower ... View full abstract»

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  • Robust stability of FET circuits at high frequency

    Publication Year: 2007, Page(s):305 - 311
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (282 KB)

    A necessary and sufficient condition for robust stability of a group of electronic circuits at high frequency that contain of source-coupled pairs is proposed. When a source-coupled pair is used as a single input-output unit, it has uncertainty in its transfer function at high frequencies. This uncertainty can cause instability in closed-loop electronic circuits and is modelled as multiplicative p... View full abstract»

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Aims & Scope

IET Circuits, Devices & Systems covers the following topics:

Circuit theory and design, circuit analysis and simulation, computer aided design; filters (analogue and switched capacitor); circuit implementations, cells and architectures for integration including VLSI; testability, fault tolerant design, minimisation of circuits and CAD for VLSI; novel or improved electronic devices for both traditional and emerging technologies including nanoelectronics and MEMs, device and process characterisation, device parameter extraction schemes; mathematics of circuits and systems theory; test and measurement techniques involving electronic circuits, circuits for industrial applications, sensors and transducers.

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