IEEE 802.15.4a standard based geographical routing provides low data rate connectivity at a very small power consumption and low complexity to inexpensive devices. The existing geographical relies on finding the least power consuming path by creating and maintaining routing tables. Beacon packets are used for computing power and energy consumption between two nodes. This power and energy consum...

The authors are developing multi-grain power control scheme in ultra-low power data-driven chip multiprocessor (ULP-DDCMP) being suitable for a networking process in low power and a high performance. ULP-DDCMP consists of four ultra-low power CUEs (ULPCUE) and a token router distributing received packets to ULP-CUE by a round robin manner. ULP-CUE consists of an elastic self-timed pipeline (STP...

The increasing use of programmable processor cores in embedded systems which are mainly used in portable devices, creates an intense need for low power operation. Although power has been primarily addressed at the circuit/technology level it has become obvious that power consumption is heavily dependent on the executing software. The goal of this paper is to illustrate the impact of several sof...

Reduction in leakage power has become an important concern in low-voltage, low-power, and highperformance applications. International Technology Roadmap for Semiconductors projects that leakage power consumption may come to dominate total chip power consumption as the technology feature size shrinks. A novel approach for ultra-low leakage CMOS circuit structure is “Sleepy keeper.” Sleepy keeper...

Flip-flops and latches are the most important elements of a design for both a delay and energy point of view. In many electronics design low power consumption is basic need in most of the applications. The energy performance requirements enhance the most designers of next generation system towards the least possible power consumption. The power consumption is basically reduced by scaling of a p...

LNA is one of the most important building blocks in the front end of the wireless communication systems. Amplification of weak signal and attenuation in noise level is a key role of LNA. In recent years valuable research is done on CMOS LNA design in on improvement of low power consumption, low noise figure, high gain, smaller space and low supply voltage. This paper illustrates a review work r...

Very low power-consumption distributed feedback (DFB) quantum cascade lasers (QCLs) at the wavelength around 4.9 μm were fabricated by conventional process without lateral regrowth of InP:Fe or using sidewall grating. Benefitted from the optimized materials and low waveguide loss, very low threshold current density of 0.5 kA/cm2 was obtained for a device with cavity length of 2 mm. Combined wit...

Advances in low-power electronics design and wireless communication have enabled the development of low cost, low power micro-sensor nodes. These sensor nodes are capable of sensing, processing and forwarding which have many applications such as underwater networks. In underwater wireless sensor networks (UWSNs) applications, sensors which are placed in underwater environments and predicted ena...

In this study a pseudo comprehensive carbon footprint model for fossil fuel power plants is presented. Parameters which their effects are considered in this study include: plant type, fuel type, fuel transmission type, internal consumption of the plant, degradation, site ambient condition, transmission and distribution losses. Investigating internal consumption, degradation and site ambient con...

Ultra-low-power protocol handling is indispensable to realize and sustain the communication in ad hoc network established by battery-operated devices, especially in emergent situations. To realize the ultra-low-power, real-time multiprocessing essential for the protocol handling should be realized with essential power consumption in which power consumption is confined into only target program e...