Abstract Multipartite entanglement plays a central role in optical quantum technologies. One way to entangle two photons is prepare them orthogonal internal states, for example, polarisations, and then send through balanced beam splitter. Post-selecting on the cases where there one photon each output port results maximally entangled state. This idea can be extended schemes post-selected generat...

This article presents an extremely low-profile tunable antenna design for smartphones with height of only 0.75 mm. The proposed is integrated into the back cover device to utilize existing gap between battery and as efficiently possible. By utilizing both components adjustable feeding weights, designed multiport system covers 3300–4200 MHz frequency range 100 instantaneous bands. In addition ju...

Abstract: Polarization converters play an important role in antennas and radar. Electromagnetic band gap materials enable manufacture of polarization converters which are : low cost, low profile, light weight and have large bandwidth. In this paper mushroom-like electromagnetic band gap materials are considered for polarization converters. The theory is reviewed. A simple design procedure is de...

The modern, advanced CMOS direct radio frequency (RF)-sampling data converter has been eagerly awaited by system design engineers for several major end-equipment manufacturers. This includes manufacturers of communications infrastructure, software-defined radios (SDRs), radar systems, or test and measurement products. Recently introduced data converters are delivering the high dynamic range com...

This paper shows the results of adding static converters (Boost, Buck and Buck-Boost converters) as an adaptation solution between a PEM Fuel Cell generator and a resistive load in order to study different effects of the converter on the generator performances in terms of voltage and current behavior. The presented results are obtained by simulating the Bond Graph developed model under 20-Sim s...

Input-series-output-parallel (ISOP) converters consisting of multiple modular DC/DC converters can enable low voltage rating switches to be used under high voltage input applications. This paper presents a digital control strategy, which can achieve equal sharing of input voltage for a modular ISOP system consisting of two-transistor forward DC/DC converters by forcing the input voltages of nei...

Voltage-type sources have dominated as an input source for power electronics converters for a long type. The existence of duality implies that there are also current-type sources. The growing application of renewable energy sources such as wind and solar energy has evidently shown that the current-type input sources exist in reality such as photovoltaic (PV) generator or the feedback technique ...

Conventional switch-mode dc-dc converters are operated at frequencies in the order of hundreds of kHz to single MHz. Switching frequencies in the order of tens of MHz would enable applications of RF converters in low power communications and computing integrated circuits with dynamic voltage scaling. Controllers for these converters would have to operate with a bandwidth in the GHz range. The m...

A control system for non identical dc-dc converters using Adaptive Neuro Fuzzy Inference System (ANFIS) is presented. The converters are connected in parallel and have a non identical inductance value, L1≠L2≠L3, with 10% tolerance. The objective of control system is to balance the output current of each converter. One of converters is used as reference. The current error, which is subtraction o...

33 ABSTRACT This paper presents a comparative evaluation of five topologies of single-phase AC-DC boost converters having power factor correction (PFC). These converter topologies are evaluated on the basis of performance and their salient features are discussed to analyze their applicability. The techniques not only help to develop a deeper understanding of these converters but also to evaluat...