By Topic

Circuits, Devices and Systems, IEE Proceedings G

Issue 5 • Date Oct 1989

Filter Results

Displaying Results 1 - 9 of 9
  • Function abstraction in automatic digital-circuit design

    Publication Year: 1989 , Page(s): 235 - 244
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (744 KB)  

    A novel approach for automating the functional design of digital circuits is presented. The goal of digital-circuit design is to generate a workable and efficient design from high-level specifications. Function abstraction is an important step, whereas the specification of the target circuit is purely behavioural. It finds the essential functions of the desired behaviour. These functions can then ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Novel switched-capacitor integrator for high-frequency applications

    Publication Year: 1989 , Page(s): 263 - 267
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (212 KB)  

    A discrete integrator for switched-capacitor (SC) filter applications is developed. The proposed integrator is generated from an optimal linear combination of the lossless discrete integrator (LDI) and the bilinear discrete integrator, and therefore it is called the composite discrete integrator (CDI). This integrator is ideal for high-frequency applications because it doubles the normal folding f... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Characterisation of a phase-sensitive detector

    Publication Year: 1989 , Page(s): 285 - 292
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (384 KB)  

    The phase-sensitive detector (PSD) operating particularly as a synchronous rectifier has an important role in many benchtop instruments, typical of which is the modern LCR component meter. The performance of the PSD determines the accuracy and frequency range of the overall instrument. Its characterisation by direct methods is particularly difficult to achieve by virtue of the necessity for an acc... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Analysis and modelling of initial delay time and its impact on propagation delay of CMOS logic gates

    Publication Year: 1989 , Page(s): 245 - 254
    Cited by:  Papers (1)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (548 KB)  

    The initial delay times due to the capacitive feedthrough effects in CMOS inverters are characterised and investigated. Based on the MOSFET large-signal model, the initial delay is modelled for a chain of CMOS inverters under step and ramp inputs. Optimal design that results in the minimum initial delay is obtained. Correlation between the initial delay and the propagation delay is constructed in ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Characteristics of a coil wound with copper wire around YBaCuO superconductive thin wires

    Publication Year: 1989 , Page(s): 279 - 283
    Cited by:  Papers (1)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (236 KB)  

    YBaCuO superconductive thin wires were developed. Devices such as coils and transformers, where a copper wire is wound around these thin wires, have been trial manufactured. Attempts have been made to control the characteristics of these devices by supplying an electric current to these superconductive thin wires. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Design of 2-D recursive digital filters with noncircular, symmetric cutoff boundary and constant group-delay responses

    Publication Year: 1989 , Page(s): 255 - 259
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (356 KB)  

    The authors present a method of generating one-variable Hurwitz polynomial (HP) using the properties of the positive definite matrices coupled with resistance matrices. Also, they test the two-terms separable-denominator transfer function and three-terms separable-denominator transfer function for their effectiveness in the design of noncircular, symmetric two-D filters with constant group-delay s... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Thermal resistance of gallium-arsenide field-effect transistors

    Publication Year: 1989 , Page(s): 229 - 234
    Cited by:  Papers (1)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (476 KB)  

    The authors describe some thermal simulations for heat flow in gallium-arsenide field-effect transistors where the effects of surface metallisation and via holes are modelled. The results were found to be significantly different to those previously published, which were based on simpler physical models. The effects of surface metallisation were found to be important in modelling the thermal resist... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Prime-factor Hartley and Hartley-like transform calculation using transversal filter-type structures

    Publication Year: 1989 , Page(s): 269 - 277
    Cited by:  Patents (3)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (452 KB)  

    The advances in digital fabrication technology have led to a new generation of integrated circuits capable of performing fast arithmetic operations, and opened the door to the consideration of algorithms that may be implemented with simple structures. When the number of data samples in the input block is prime or a product of primes, the Hartley transform can readily be mapped to circular convolut... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Conduction in ohmic region of submicrometre MOSFET

    Publication Year: 1989 , Page(s): 260 - 262
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (156 KB)  

    An accurate method to evaluate the variation of inversion charge along the channel, including the effect of lateral field from the source and drain, has been applied to find the current in the ohmic region of a submicrometre MOSFET. The model can explain the observed maximum in the normalised transconductance (gmL) as the channel length is reduced. The final rapid degradation of gmL is due to the ... View full abstract»

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