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Microelectronics, 1998. ICM '98. Proceedings of the Tenth International Conference on

Date 16-16 Dec. 1998

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Displaying Results 1 - 25 of 76
  • Proceedings of the Tenth International Conference on Microelectronics (Cat. No.98EX186)

    Publication Year: 1998
    Request permission for commercial reuse | PDF file iconPDF (410 KB)
    Freely Available from IEEE
  • Operation of high speed switching systems based on bipolar transistors in nuclear radiation environments

    Publication Year: 1998, Page(s):145 - 148
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (244 KB)

    Operation of high speed switching system based on bipolar transistors in nuclear radiation environment was investigated either theoretically or experimentally. The switching equations of the active device and circuit were solved, where transient switching time parameters were computed. The study was extended to include the effects of different nuclear radiation types (neutrons, protons, electrons ... View full abstract»

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  • Realization of inductorless RF bandpass amplifiers using immittance simulators employing CCIIs

    Publication Year: 1998, Page(s):141 - 144
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (236 KB)

    The use of circuits constructed with current conveyors has been demonstrated to be potentially advantageous for the realization of high frequency continuous-time monolithic analogue systems. This paper presents the realization of inductorless bandpass amplifiers suitable for RF applications using immittance simulators employing CCIIs. A design example of fourth order flat-band amplifier is given a... View full abstract»

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  • Reduced bond graph modeling of semiconductor device thermal effects

    Publication Year: 1998, Page(s):135 - 140
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (484 KB)

    Faced with the problem of modeling complex and mixed-domain dynamic systems, system engineers use the bond graph formalism. Bond graph techniques are now used for modeling semiconductor devices in power electronics field. To have accurate models of power devices, it is necessary to take into account the thermal phenomena modeled by a thermal network. The thermal network describes the heat flow and... View full abstract»

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  • Characterization of planar passive circuits using source method

    Publication Year: 1998, Page(s):131 - 134
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (252 KB)

    A source method is developed for analysing STEP and GAP discontinuities in microstrip circuits. We propose to model the circuit by a rigorous method. including sources and using roof top trial functions. The roof top expansion functions approach is largely developed in the literature for complex discontinuities. Nevertheless, this approach generates a large matrix system. The numerical results obt... View full abstract»

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  • High performance integrated CMOS frequency-to-voltage converter

    Publication Year: 1998, Page(s):63 - 66
    Cited by:  Papers (26)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (332 KB)

    In this paper we present a new high performance frequency-to-voltage converter (FVC) dedicated for integrated CMOS mixed-signal (analog/digital) applications. The circuit is very fast and requires a very small silicon area for integration. The output voltage generated by this FVC does not present any AC ripples and is proportional to the period of a square wave form input signal. The time response... View full abstract»

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  • Early branch prediction circuit for high performance digital signal processors

    Publication Year: 1998, Page(s):95 - 98
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (280 KB)

    In this paper, design and VLSI implementation of an Early Branch Prediction (EBP) circuit, based on a variation of Carry Look-ahead scheme is presented. The key features of this design are low area, high speed (2[log n/2]+1), and high modularity. This design out performs all the EBP designs presented so far. For 64 bit word length the early branch prediction is obtained in 679 ps as simulated for ... View full abstract»

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  • Photoluminescence spectra of doped and undoped CdS films prepared by spray pyrolysis

    Publication Year: 1998, Page(s):127 - 130
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (344 KB)

    Large area thin films of n-type CdS:In were prepared by spray pyrolysis technique. The films were n-type doped by having |In/Cd| ion concentration ratio of 10-6, 10-5, 10-4, 10-3, and 10-2 in the sprayed solution. These films were heat treated in N2 atmosphere at 450°C for one hour. The as deposited undoped, doped, and heat trea... View full abstract»

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  • A 1.5-V current-mode capacitance multiplier

    Publication Year: 1998, Page(s):9 - 12
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (268 KB)

    In this work the problem of obtaining capacitance values higher than those normally integratable and/or provided by capacitive transducers has been investigated. The solution here proposed consists of a capacitance multiplier made up of a current conveyor and a current operational amplifier which allows accurate capacitance factors up to 100 to be achieved. Moreover, thanks to the use of the curre... View full abstract»

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  • Synthesis of low power circuits using combined pass logic and CMOS topologies

    Publication Year: 1998, Page(s):59 - 62
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (324 KB)

    This paper describes the development of a logic synthesis tool designed specifically to work with a reduced set cell library based primarily on pass logic circuit cells in combination with standard CMOS gates. Circuits synthesized with this tool were compared to circuits synthesized by Synopsys' Design Analyzer using a standard CMOS cell library, for the same benchmarks. An average of 43% improvem... View full abstract»

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  • A CAD environnnent for digital filters using a VerilogHDL based functional bit-serial compiler

    Publication Year: 1998, Page(s):91 - 94
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (400 KB)

    This paper reports the development of a highly integrated CAD environment for area efficient implementation of digital filters using commercially available CAD tools. The environment establishes a plain interface between CADENCE (an IC design framework), MATLAB (a mathematical computation tool), and BITMAP (a new custom-developed filter compiler). The new compiler allows the functional description... View full abstract»

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  • Numerical simulation of the I-V characteristics of heterojunctions including thermionic emission mechanism

    Publication Year: 1998, Page(s):123 - 126
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (340 KB)

    The effects of temperature, Al mole fraction, and doping on the I-V characteristics of abrupt GaAs/AlGaAs heterojunctions are studied by numerically solving the basic semiconductor equations. Numerical models based on drift-diffusion with and without inclusion of thermionic emission current at the heterointerface are used and their results are compared. The simulation shows that neglecting the the... View full abstract»

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  • High performance balanced current controlled amplifiers

    Publication Year: 1998, Page(s):183 - 186
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (212 KB)

    High performance balanced current controlled voltage-mode amplifiers are presented. They are constituted of four class AB controlled conveyors and do not require any external passive component. They are easily tunable from the bias currents which give to them a good versatility. These fully differential amplifiers provide wide bandwidth, low harmonic distortion and very low output offset voltage View full abstract»

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  • A multi-slope CMOS analog to digital converter

    Publication Year: 1998, Page(s):5 - 8
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (248 KB)

    This paper describes a new multi-slope analog to digital converter. The algorithm used for the converter is based on relative comparisons, which makes the converter self-calibrated. The calibration is performed without any additional analog or logic circuitry, and the conversion does not need extra clock cycles. The analog circuit is simple and limited to three identical current controlled oscilla... View full abstract»

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  • Electrical contacts on MOVPE-Grown ZnSe based laser diodes

    Publication Year: 1998, Page(s):53 - 58
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (368 KB)

    The electrical characterization of metal contacts to Cl and N-doped ZnSe material systems is reported. Metalorganic vapor phase epitaxy (MOVPE) was used to grow the doped ZnSe samples at 330°C. With intentional chlorine doping using 1-chlorobutane, free electron concentrations of up to 8×1017 cm-3 have been achieved. Photoluminescence (PL) spectra in conjunction wit... View full abstract»

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  • System testability evaluation with STA

    Publication Year: 1998, Page(s):79 - 81, 82b
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (428 KB)

    This paper presents a Computer Aided Testability tool named STA (System Testability Assistant), aimed at proposing a testability strategy for systems as early as possible in the design process. Given a system description, STA first compiles it in order to create system, boards, and circuits objects, and then proceeds bottom-up, from the circuit to the system, in order to evaluate the actual testab... View full abstract»

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  • Verificatiom of synchronous realizability of interfaces from timing diagram specifications

    Publication Year: 1998, Page(s):103 - 106
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (316 KB)

    We define the realizability of synchronous interface controllers where the specification of the communication is based on timing diagrams. A feasible maximum clock period is computed such that all timing constraints are satisfied. Our algorithm for finding the clock period is based on checking a property of the timing diagram that we call local consistency View full abstract»

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  • A novel Q tuning method, using variable output conductance of transconductors

    Publication Year: 1998, Page(s):191 - 194
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (248 KB)

    In this paper, the effects of Transconductors' phase shifts on the Q factor of a second order system are discussed and it is shown that this negative phase shift appears as negative conductance in an integrator and amount of this conductance can be achieved in a general filter. A new Q tuning method based on compensation of this phase shift by variable output conductance of Transconductors is appl... View full abstract»

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  • New design using a VHDL description for DCT based circuits

    Publication Year: 1998, Page(s):87 - 90
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (256 KB)

    This paper presents a new method to implement the DCT algorithm for JPEG or MPEG compression using VHDL description in ASIC or FPGA circuits. Discrete Cosine Transform (DCT) is one of the most popular lossy techniques used today in video compression schemes. Several algorithms have been proposed to implement the DCT. Loeffler (1989) has given a new class of 1D-DCT using just 11 multiplications and... View full abstract»

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  • A static method for system performance estimation

    Publication Year: 1998, Page(s):111 - 114
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (352 KB)

    Performance estimation techniques and tools help designers to quickly determine appropriate computer architectures and programmers to optimize implementations for specific applications. In this paper, we present a method for system performance estimation. Based on this method we developed a tool which accepts a generic architecture and applications written in the C language. The tool is integrated... View full abstract»

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  • Low energy implantation and transient enhanced diffusion: a reliable approach to secondary defect profile measurements

    Publication Year: 1998, Page(s):119 - 122
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (276 KB)

    It is well known that low energy implantation is the most promising option for ultra shallow junction formation in the next generation of silicon BiCMOS technology. Among the dopants that have to be implanted, boron is the most problematic because of its low stopping power and its tendency to undergo transient enhanced diffusion and clustering during thermal activation. This paper reports an exper... View full abstract»

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  • Submicronics technology: the services available from CMP

    Publication Year: 1998, Page(s):IP3 - IP5
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (328 KB)

    This paper is about the CMP service (Circuits Multi-Projects). CMP aims at providing universities, research laboratories and industries with the possibility to have their integrated circuits projects fabricated. The service has started in 1981. Presently customers are serviced for a CMOS double layer metal technology (DLM) 0.7 μ, a CMOS double layer polysilicon/double layer metal (DLP/DLM) 1.2 ... View full abstract»

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  • Design of neural nets for character recognition

    Publication Year: 1998, Page(s):286 - 289
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (304 KB)

    In this paper, the possibility of using Artificial Neural Networks (ANNs) in the field of character recognition is discussed. Our study is undertaken on theoretical and practical investigations of two feedforward models (the Prototype Multilayer Perceptron (MLP) and the Fully Connected model) by using the backpropagation training algorithm. We introduce a fully connected network of three layers in... View full abstract»

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  • A robust neural network multi-lane recognition system

    Publication Year: 1998, Page(s):178 - 182
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (388 KB)

    In this paper, the design and neural implementation of a vision based multi-lane highway lane recognition system are presented. The design objective of the system is to recognize the lane which a test vehicle is currently driving through by determining its left and right lane boundaries. When the proposed lane recognition system was tested it showed very high percentage of correct results in very ... View full abstract»

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  • A class AB CMOS fully balanced signal generator

    Publication Year: 1998, Page(s):1 - 4
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (268 KB)

    In this paper a novel single input to fully balanced output circuit (SFC) is proposed. The circuit operates in a class AB mode to achieve low standby power dissipation and high current drive capability. The circuit produces two buffered balanced output signals without requiring common mode feedback circuit. Measurement results from a 1.2 μm N-well CMOS chip indicate a bandwidth of 5.5 MHz while... View full abstract»

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