By Topic

IEE Proceedings - Circuits, Devices and Systems

Issue 5 • Date Oct 1997

Filter Results

Displaying Results 1 - 10 of 10
  • Full-swing BiCMOS Schmitt trigger

    Publication Year: 1997, Page(s):303 - 308
    Cited by:  Papers (4)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (416 KB)

    A novel full swing BiCMOS Schmitt trigger, consisting of a BiCMOS inverter and a CMOS latch circuit, is proposed. This new circuit outperforms a conventional CMOS Schmitt trigger significantly. Even when the supply voltage is lowered down to 1.5 V, the new Schmitt trigger still maintains good operational quality. Based on the PSPICE simulations, the proposed BiCMOS circuit has less transmission de... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • High-density 16/8/4-bit configurable multiplier

    Publication Year: 1997, Page(s):272 - 276
    Cited by:  Papers (9)  |  Patents (4)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (756 KB)

    A configurable serial-parallel multiplier based on Braun's and Baugh-Wooley's algorithms is presented. The multiplier can be configured to perform either signed or unsigned multiplications and to achieve variable precision. In this device one factor A(m) is fed serially with an arbitrary wordlength m while the other B(n) is stored in parallel with a configurable number of bits n=4, 8 or 16 bits. S... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Low-pass impedance transformation networks

    Publication Year: 1997, Page(s):284 - 288
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (288 KB)

    Explicit formulas for the element values of a low-pass impedance transformation network having Butterworth or Chebyshev responses are given. For the second and the fourth-order networks, element values and transformation frequency band are directly determined by the impedance ratios. Since the expressions of the complex conjugate poles of the reflection coefficient of the network are rather concis... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Finite wordlength effects in two-dimensional multirate periodically time-varying filters

    Publication Year: 1997, Page(s):277 - 283
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (556 KB)

    The effect of both input and product quantisation is examined for two's-complement, fixed-point arithmetic with rounding quantisation. Both direct-form and state-space structures are considered, and mathematical models for the transmission of the quantisation noise are established. Expressions are derived for the variance of the statistically-stationary output noise, with an example showing how a ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • High performance asynchronous FIR filter design in GaAs

    Publication Year: 1997, Page(s):289 - 296
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (928 KB)

    An asynchronous FIR architecture design using a mixed mode logic approach in GaAs technology is presented. Combining an asynchronous design style with static and dynamic logic proves to be very suitable for high speed and low power implementation of real time mobile computing applications. The authors introduce a novel clocked dynamic latched (CDL) logic in GaAs to implement the micropipeline latc... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Differential register bank design for self timed differential bipolar technology

    Publication Year: 1997, Page(s):297 - 302
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (720 KB)

    A high performance differential bipolar datapath based on the ARM architecture has been designed using `micropipeline' self-timed techniques. The datapath design included a full-custom 31×32 bit register bank. Traditional bipolar single-ended design techniques are not suited to implementing a RAM of this size on the target technology. This has led to the adoption of a fully differential circ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Current-mode defuzzifier circuit to realise the centroid strategy

    Publication Year: 1997, Page(s):265 - 271
    Cited by:  Papers (8)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (792 KB)

    A current-mode circuit based on the square-rooter/multiplier and squarer/divider circuits to realise the centre-of-gravity defuzzification strategy is described. The current-mode approach allows it to operate at 3.3 V without degrading its dynamic range. The proposed circuit was fabricated in 0.8 μm single-polysilicon-double-metal CMOS technology, and the experimental results showed that it can... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Systolic arrays for the discrete Hilbert transform

    Publication Year: 1997, Page(s):259 - 264
    Cited by:  Papers (6)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (540 KB)

    A new fast parallel array algorithm to compute the discrete Hilbert transform for radix-2 length sequences is proposed. Unlike the existing fast methods which use transforms such as the fast Fourier transform, the proposed algorithm does not require the help of any fast transforms. This array algorithm offers a suitable expression for developing a VLSI systolic array for the discrete Hilbert trans... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Properties and methods of calculating generalised arithmetic and adding transforms

    Publication Year: 1997, Page(s):249 - 258
    Cited by:  Papers (7)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1020 KB)

    The methods of generation of forward and inverse transformation kernels for generalised arithmetic and adding transforms are presented. Different methods of generation of transformation matrices or spectra in arbitrary polarities from a known transformation matrix or spectrum in some polarity have been developed. Using an optimised dyadic convolution process on the original data vector, a new meth... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Investigation of step-doped channel heterostructure field-effect transistor

    Publication Year: 1997, Page(s):309 - 312
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (336 KB)

    A new heterostructure field-effect transistor (FET) with an InGaAs step-doped-channel (SDC) profile has been fabricated and demonstrated. The SDCFET studied provides the advantages of high current density, high breakdown voltage, wide gate voltage swing for high transconductance, and adjustable threshold voltage. A simple model is employed to analyse the performance of threshold voltage. For compa... View full abstract»

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