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CMOS DRAMs which were first introduced commercially in the 256Kb DRAM generation have proven their advantages in power and performance, and are expected to be the future trend. In CMOS DRAMs, the half-VDD bitline sensing scheme — is widely used in the current generation of 1 Mb DRAMs. However, the half-VDD sensing scheme suffers a performance degradation as VDD is reduced. Starting with the 4 Mb DRAM...
Novel devices are desperately required for effective detection of bacteria because of its potential risks in the fields of food safety and public health. In this paper, we demonstrated graphene field-effect transistors (G-FETs) for Escherichia coli (E. coli) detection. Linker molecules and antibodies were employed to functionalize graphene. Raman spectroscopy and confocal microscopy were used to confirm...
Radio links in wireless body area networks (WBAN) experience highly time-varying attenuation because of topology instability. On the other hand, real-time, reliable, energy efficient and interference-aware communication protocol is the most important requirements of many WBAN applications. Since the channels quality is not stable, there is no any fixed optimal power level which meets all the requirements...
Compact, low-power random number generators (RNG) are essential for applications such as stochastic, bio-inspired-computing and secure system data encryption/communication. We demonstrate for the first time highly scalable RNG circuits based on the reset-state transient current fluctuation of resistive switching OxRAM devices. We propose- (i) single OxRAM based pseudo-random number generator (PRNG)...
The transport properties of back-gated graphene field effect transistors (GFETs) can be tuned via chemical doping. In this study, we report alteration of charge transport properties of GFET via 5-(4-hydroxyphenyl)-10,15,20-tri-(p-tolyl) zinc(II) porphyrin (Zn(II)-TTPOH) and its free base counterpart. We propose that, the porphyrin induces p - type doping in graphene.
In this paper, we discuss how to design the gateway service mechanism for intelligent Internet of things. Particularly, gateway is a key component in internet of things, and it is able to perform as a protocol converter and construct on the transport layer with high efficiency, low response time, high reliability, and low energy consumption. Afterwards, the system architecture and the software architecture...
Communicating data from sensors such as gyroscopes and accelerometers, to processors, typically occurs over printed circuit board traces. This communication can cost up to 40 µW at data rates of 1 Mb/s.
In this paper describes the design, development and construction of a low power consumption sensor node for remote monitoring of the quality environment. The system was developed in the INICTEL-UNI, as part of the project "Telemetry system for monitoring natural resources and the environment in Peru". The sensor node is implemented with themethodology of development iterative and incremental...
In this paper, we propose a novel compressed sensing based joint detection and tracking algorithm, named CS-JDT algorithm, to track multiple targets for STAP radar system. A novel general similar sensing matrix pursuit (GSSMP) algorithm is proposed to reconstruct the whole radar scenario (DOA-Doppler plane) for each range gate at consecutive scans. The proposed GSSMP algorithm addresses several problems...
This work proposes a bi-direction hydrogen amorphous silicon (a-Si:H) gate driver circuit, which can be properly applied to the active-matrix liquid-crystal displays with integrated touch panels. The fluctuations of display control signals increase the noise of the touch panel during touch sensing period. To solve this problem, the proposed circuit allows the LCDs to pause at any column until the...
Connected objects such as smart phones and wireless sensors becomes very attractive for our assisted daily life applications, because it offers continuous monitoring capability of both personal and environmental parameters. However, these systems still face a major energy issue that prevent their wide adoption. Indeed, continuous sampling and communication tasks quickly deplete sensors and gateways...
The Internet of Things is evolving around a plethora of vertical platforms, each specifically suited to a given scenario and often adopting proprietary communications, device and resource control protocols. The emerging need for cross-domain IoT applications and services highlights the necessity of interoperability across IoT platforms for a unified and secure sharing of and access to sensing/actuating...
One method of alleviating the burdens of low bandwidth channel in underwater sensor networks (UWSNs) is to perform in-network processing on the collected data, which leads to efficient channel usage, improvement of the end-to-end delay, and improvement of the network lifetime. However, for applications that require large amounts of data, such as seismic monitoring, the detection and tracking of marine...
This work proposes high performance of permanent-magnet synchronous motor (PMSM) driver IC integrated with position sensorless scheme and current sensing circuits. The position sensorless scheme is adapted with digital sliding mode observer (SMO) method that has high robust characteristics of motor parameter variations. For current sensing circuits, 10-bit successive approximation (SAR) analog-to-digital...
Our paper deals with the design and implementation of a novel LASER based security system for inland aquaculture such as Shrimp/prawn farming perspective to Bangladesh. The system implements LASER as a mean of detecting intruders. A wireless sensor network based on nRF24L01 trans-receiver is used to communicate with the gateway and the sensors. The number of LASERs obstructed is determined by LDRs...
The Internet of Things (IoT) architecture is expected to evolve into a horizontal model containing various open systems, integrated environments, and platforms. However, not much research effort has been devoted to developing architectures for horizontal IoT solutions so far. This paper presents an IoT architecture based on Software-Defined Networking (SDN). In this architecture, devices, gateways,...
This paper presents a current sensor for the 16 series Li-ion battery cells. In order to detect the large current of 3.0 A at 57.6 V charging voltage and avoid the gate oxide overdrive problem, the feedback control loop with two source followers and the single stage differential amplifier are used. The proposed design is implemented using a typical 0.25 μm 1P3M 60V BCD process. The sensing current...
The Internet of Things (IoT) became superior innovation area for nanoelectronic circuit design. This work is focused on a multi-modal power gating design approach for sensor node systems for IoT. Power gating is very efficient and flexible way for minimization of IoT CMOS circuits power consumption. However, only a very few papers suggesting multi-modal approach were published. Conventional power...
This paper explores the use of continuous-time Fowler-Nordheim (FN) tunneling for implementing self-powered CMOS sensors that can be used to simultaneously measure and time-stamp occurrences of rare signal events. At the core of the proposed design is a floating-gate device where the FN based electron tunneling is induced through the thin gate-oxide and the control gate is used to couple the signal...
This paper investigates ISFET circuits operating in current mode and demonstrates linear pH-to-current operation. The two operating regions that provide linear gate-voltage to drain-current operation are the triode and velocity saturation regions which have been compared with a focus on pH sensing applications. Subsequently, two sensor arrays optimised for operation in each region are proposed with...
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