With the advent of low-cost processors and accessories, the ability to do control digitally has become increasingly feasible; this has led to a dramatic change in the way controllers are designed, tested, and implemented. Moreover, these digital controllers are usually more robust and easier to design than their analog counterparts. A micro-controller (MC) is the processor that is used to do th...

As technology grows, higher frequency signals are required to be processed in various applications. In order to digitize such signals, conventional analog to digital convertors are facing implementation challenges due to the higher sampling rates. Hence, lower sampling rates (i.e., subNyquist) are considered to be cost efficient. A well-known approach is to consider sparse signals that have few...

The homeland security has become a very significant consideration for all the Governments throughout the world. To improve the OPerational SECurity (OPSEC), multi relational graphs were introduced for Covert Network Analysis (CNA). In this paper, proposed SpyNetMiner system identifies the key players who maximally influence the covert network. Abnormality of the nodes is analyzed based on the p...

− Energy transmission by high voltage direct current – HVDC is steadily increasing in the world, both at the highest power levels, but also at medium power, for example in connections of remote wind-parks to the main a.c. grid. Although principles for d.c. side measurements are known since long, support from metrology is not on par with the needs. An overview of available technologies and the c...

The utilization of novel cascode GaN devices can significantly increase the power density and efficiency convertors. However, owing to high switching speed (high dv/dt or di/dt) inevitable parasitic inductance in device packages external circuits, are more prone oscillate, resulting voltage overshoot, electromagnetic interference (EMI), even breakdown, which reduces reliability drive system. Th...

This letter compares the 3 dB axial ratio (AR) bandwidth (BW) of transmission mode single-screen linear-to-circular polarisation convertors based on three different slot topologies. Using a conventional centre-connected cross-slot arrangement as baseline, we show that significant performance improvement can be achieved by creating more elaborate design with unit cells composed multiple unequal ...

The problems of mode regulation distribution networks in Ukraine are investigated this paper. Authors propose to regulate the modes by means convertors renewable energy sources (solar power plants etc.) connected according Smart Grid concept. analysis multicriteria optimization results network was performed and most perspective criterion were selected features structure functioning Ukraine. tar...

in the present paper, we introduce the sequence space [{l_p}(e,delta) = left{ x = (x_n)_{n = 1}^infty : sum_{n = 1}^infty left|  sum_{j in {e_n}} x_j - sum_{j in e_{n + 1}} x_jright| ^p < infty right},] where $e=(e_n)$ is a partition of finite subsets of the positive integers and $pge 1$. we investigate its topological properties and inclusion relations. moreover, we consider the problem of fin...

Reciprocal spin-orbit coupling (SOC) via geometric phase with flat optics provides a promising platform for shaping and controlling paraxial structured light. Current devices, from the pioneering q-plates to recent J-plates, provide only spin-dependent wavefront modulation without amplitude control. However, achieving control over all spatial dimensions of SOC states requires corresponding comp...