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In this paper, a maximum power point tracking (MPPT) architecture for micro-scale photovoltaic (PV) energy harvesting systems is presented. A switching DC-DC boost converter is used to provide the required voltage for the circuits of the ultra-low-power application. The MPPT tracks different illumination intensities through changing the input impedance of the boost converter. The proposed technique...
In medical diagnosis, ultrasound (US) imaging is one of the most common, safe, and powerful techniques. Volumetric (3D) US is potentially very attractive, compared to 2D US, because it might enable telesonography - decoupling the local image acquisition, by an untrained person, and the diagnosis, by the trained sonographer, who can be remote. Unfortunately, current 3D systems are hospital-oriented,...
We present an efficient FPGA architecture suitable for a medical 3D ultrasound beamformer. We tackle the delay calculation bottleneck, which is the heart and the most critical part of the beamformer, by proposing a computationally efficient design that is able to perform volumetric real-time beamforming on a single-chip FPGA. The design has been demonstrated for a 32×32-channel receive probe, and...
In this paper, a maximum power point tracking (MPPT) system for indoors photovoltaic transducers is presented. The proposed system is used in conjunction with a switching DC-DC boost converter that generates a 1.2 V output for the circuits of the ultra-low-power application. The MPPT tracks different illumination intensities through changing the input impedance of the boost converter. The open circuit...
The paper outline development and simulation of Pulse Interval Encoding (PIE) encoder architecture for Ultra High Frequency (UHF) Radio Frequency Identification (RFID) reader based on Field Programmable Gate Array (FPGA). The PIE encoder architecture presented in this paper is according to International Organization for Standardization and International Electrotechnical Commission (ISO/IEC 18000–6)...
Many computing-intensive applications in different domains are benefiting from new High Performance Computing (HPC) architectures such as clusters and computational grids. This experimental study shows the performance results of parallelizing a computing-intensive risk management financial simulator application using the Message Passing Interface (MPI) and running it on two configurations of a dedicated...
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