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Design Of Analog Cmos Integrated Circuits

Although the literature on university–industry links has begun to uncover the reasons for, and types of, collaboration between universities and businesses, it offers relatively little explanation of ways to reduce the barriers in these collaborations. This paper seeks to unpack the nature of the obstacles to collaborations between universities and industry, exploring influence of different mechanisms in lowering barriers related to the orientation of universities and to the transactions involved in working with university partners. Drawing on a large-scale survey and public records, this paper explores the effects of collaboration experience, breadth of interaction, and inter-organizational trust on lowering different types of barriers. The analysis shows that prior experience of collaborative research lowers orientation-related barriers and that greater levels of trust reduce both types of barriers studied. It also indicates that breadth of interaction diminishes the orientation-related, but increases transaction-related barriers. The paper explores the implications of these findings for policies aimed at facilitating university–industry collaboration.

Investigating the factors that diminish the barriers to university-industry collaboration

Classifications, applications, and design challenges of drones: A review

In this paper, a basic cell for low-power and/or low-voltage operation is identified. It is evidenced how different versions of this cell, coined as "flipped voltage follower (FVF)" have been used in the past for many applications. A detailed classification of basic topologies derived from the FVF is given. In addition, a comprehensive list of recently proposed low-voltage/low-power CMOS circuits based on the FVF is given. Although the paper has a tutorial taste, some new applications of the FVF are also presented and supported by a set of simulated and experimental results. Finally, a design example showing the application of the FVF to build systems based on translinear loops is described which shows the potential of this cell for the design of high-performance low-power/low-voltage analog and mixed-signal circuits.

The flipped voltage follower: a useful cell for low-voltage low-power circuit design

Textiles have been concomitant of human civilization for thousands of years. With the advances in chemistry and materials, integrating textiles with energy harvesters will provide a sustainable, environmentally friendly, pervasive, and wearable energy solution for distributed on-body electronics in the era of Internet of Things. This article comprehensively and thoughtfully reviews research activities regarding the utilization of smart textiles for harvesting energy from renewable energy sources on the human body and its surroundings. Specifically, we start with a brief introduction to contextualize the significance of smart textiles in light of the emerging energy crisis, environmental pollution, and public health. Next, we systematically review smart textiles according to their abilities to harvest biomechanical energy, body heat energy, biochemical energy, solar energy as well as hybrid forms of energy. Finally, we provide a critical analysis of smart textiles and insights into remaining challenges and future directions. With worldwide efforts, innovations in chemistry and materials elaborated in this review will push forward the frontiers of smart textiles, which will soon revolutionize our lives in the era of Internet of Things.

Smart Textiles for Electricity Generation.

A novel compact low-voltage, low-power two-stage non-conventional op-amp with rail to rail input-output swing and without Miller compensation is introduced. The input stage uses floating gate transistors and a dynamic biasing scheme. Experimental results of a test chip are presented that validate the proposed circuit operating with a single supply as low as 1.4 V.

Low-voltage, low-power rail-to-rail two stage op-amp with dynamic biasing and no Miller compensation

A new family of CMOS two-stage unity-gain buffers is presented, based on introducing Quasi-Floating Gate (QFG) techniques to achieve class AB operation. The resulting buffers feature simplicity, low supply voltage requirements, and low quiescent currents which are accurately set regardless of process, temperature, or supply variations. Measurement results for a 0.5 μm CMOS implementation of three class AB buffers powered at ±1.65 V show maximum output currents ranging from 64 to 92 times the quiescent currents and static power consumption below 200 μW.

200 μW CMOS class AB unity-gain buffers with accurate quiescent current control

A novel implementation of a rail-to-rail exponential voltage to voltage converter is presented. It is based on a pseudo-exponential approximation that is easily achieved by the nonlinear currents of a class-AB transconductor. Measurement results for a 0.5 μm CMOS technology show a 52 dB output voltage range with linearity error less than ±2 dB using a dual supply voltage of ±750 mV. The power dissipation is less than 40 μW.

Compact power-efficient class-AB CMOS exponential voltage to voltage converter

Two schemes for power efficient gain programmable V-I conversion based on class AB CMOS mirrors are introduced. These allow for high-speed gain programmable precision rectification. Experimental results from a test chip prototype, in 0.5 /spl mu/m CMOS technology with /spl plusmn/1 V supplies are shown that validate the proposed circuits.

Novel architectures of class AB CMOS mirrors with programmable gain

A set of outreach initiatives implemented at the School of Industrial and Telecommunications Engineering of the Public University of Navarre is described. During the six academic years where these initiatives have been carried out, a 10% increase in the intake of engineering students has been observed, which is even more valuable considering the global decrease of new students in the region during this period. Feedback from students evidences that the activities carried out improve knowledge about the degrees offered and motivation towards engineering studies, specially the onsite workshops programmed at high schools and the open-door day.

Antonio J. Lopez-Martin

Papers

Low-voltage, low-power rail-to-rail two stage op-amp with dynamic biasing and no Miller compensation

200 μW CMOS class AB unity-gain buffers with accurate quiescent current control

Compact power-efficient class-AB CMOS exponential voltage to voltage converter

Novel architectures of class AB CMOS mirrors with programmable gain

Engineering outreach programs at the Public University of Navarre: A holistic approach