Showing papers in "Microelectronics Journal in 2011"

TL;DR: A low-frequency piezoelectric energy harvester based on impact vibration assembled with a compliant driving beam and two rigid generating beams, which is especially suitable for a compact MEMS approach.

TL;DR: It is found that CO adsorption can induce significant change in the cluster electronic properties, suggesting that B"1"2N" 1"2"2 may be a potential sensor for CO detection.

TL;DR: The results indicate that the junction temperature of LED is about 52^oC for the input power of 3W, and correspondingly the total thermal resistance of LED system is 8.8K/W, which means that such a structure of heat pipe cooling system is used to cool high power LED system.

TL;DR: Sustained oscillation is reported for all types though oscillating resistance and time dependent poles are present and an analytical model is proposed to estimate the desired amplitude of oscillation before the oscillation starts.

TL;DR: The design parameters of Cylindrical Surrounding Double-Gate (CSDG) MOSFETs as an RF switch for the advanced wireless telecommunication systems are analyzed and it is observed that the CSDG MOSfET stores more energy (1.4 times) as compared to the CSSG M OSFET, which has more stored energy.

TL;DR: Two improved structures have been proposed for a loop-based Random Access Memory (RAM) cell and the wasted area has been reduced compared to traditionalloop-based RAM cell.

TL;DR: A double-Gate MOSFET is designed and compared its performance parameters with the single-gate MOSfET as RF CMOS switch, particularly the double-pole four-throw (DP4T) switch, for the wireless telecommunication systems.

TL;DR: This paper presents a first of its kind canonic realization of active RC (ARC) sinusoidal oscillator with non-interactive/independent tuning laws, which simultaneously provides buffered quadrature voltage outputs and explicit quadratures current outputs.

TL;DR: A new realization of resistorless mixed-mode quadrature sinusoidal oscillator using a new active building block (ABB) called the differential voltage current-controlled conveyor transconductance amplifier (DVCCCTA) is presented.

TL;DR: The results show the variation of channel potential and subthreshold swing with channel length, gate bias, and oxide thickness, which will provide some guidance for the integrated circuit designs.

TL;DR: Two new grounded inductance simulators based on DXCCII suitable for operation in 30 kHz–30 MHz frequency range, are presented and a novel multi-input single-output universal filter derived from one of the new grounded induction simulators is simulated to demonstrate the functionality of the proposed circuit.

TL;DR: This paper presents possible approaches to the design of a novel low-voltage, low-power, and high-precision current conveyor of the second generation (CCII+/-) based on the bulk-driven folded cascode operational transconductance amplifier (OTA) with extended input common-mode voltage range.

TL;DR: Implementation of new multifunction frequency filter based on the proposed FG-DVCC is presented in this paper to take the advantages of the properties of the proposed circuit.

TL;DR: The numerical results show that the heated surface temperature of porous micro heat sink is low at high heat fluxes and is much less than the bearable temperature level of LED chips.

TL;DR: This paper has proposed two reversible Wallace signed multiplier circuits through modified Baugh-Wooley approach, which are much better than the two available counterparts in all the terms.

TL;DR: This paper presents the first design methodology of MINs using QCA, and demonstrates the functionality and validity of the proposed methodology, performance evaluations ofMINs using QCADesigner simulator are given and analyzed.

TL;DR: An ultra low voltage, high performance Operational Transconductance Amplifier (OTA) and its application to implement a tunable Gm-C filter and Monte Carlo and temperature dependent simulation results are included to forecast the mismatch and temperature effects after fabrication process.

TL;DR: A new differential delay cell with complementary current control to extend the control voltage range as well as the operation frequency is proposed for low voltage and wide tuning range voltage-controlled ring oscillator (VCRO).

TL;DR: ASIC design of a high speed low power circuit for factorial calculation of a number and improvements in speed and power consumption were found in comparison with UT and NND based implementations, respectively.

TL;DR: Lower thermal degradation rate of the soft PZT-based device at a lower temperature can be attributed to decreased temperature dependence of dielectric and piezoelectric constants mainly due to constrained domain motions.

TL;DR: Novel floating gate MOSFET (FGMOS) based low- voltage analog circuits such as current-to-voltage converter, current-mode divider and pseudo-exponential function generator are proposed in this paper to demonstrate the feasibility and the effectiveness of these circuits.

TL;DR: In this work novel-efficient implementations to convert a two’s complement binary number into its canonic signed digit (CSD) representation are presented and are highly efficient in terms of speed and area in comparison with other counterpart previous architectures.

TL;DR: In this paper compact size self contained energy harvesters were built by considering typical space available for AA size batteries and found the square cross-section facilitates better attachment of the piezoelectric elements with the harvester shell and worked efficiently at higher amplitudes without immediate failure.

TL;DR: It is demonstrated that the proposed structure exhibits better suppression of short channel effects and hot carrier effects when compared to the conventional cylindrical surrounding gate MOSFETs.

TL;DR: Three current-mode universal biquadratic filters each with five input terminals and one output terminal are presented and offer the versatility to synthesize all standard filter types without component matching condition and using grounded capacitors.

TL;DR: A novel ultra-high compliance, low power, very accurate and high output impedance current mirror/source is proposed and its outstanding performance is verified by HSPICE simulation in TSMC 0.18µm CMOS, BSIM3 and Level49 technology.

TL;DR: In this article, a kind of MEMS vector hydrophone with bionics structure was introduced in 2007, which has a good directional pattern in the form of ''8''-shape.

TL;DR: This paper presents design of a voltage-mode multiple-inputs winner-take-all (WTA) maximum (max) and minimum (min) circuits, realized in a CMOS technology with low-component counts of transistors, which display usability and performance results.

TL;DR: The proposed approach is used to find the optimal electrical and dimensional transistor parameters in order to obtain and explore the better transistor performances for analog and digital CMOS-based circuit applications.

TL;DR: It is shown that the proposed equations allow thermal optimization of energy harvesters to reach their top performance characteristics and the knowledge of thermal properties of the environment play the key role in the optimization procedure.