Searched for: subject%3A%22Electromagnetism%22
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Massaad, J. (author), van Neer, P.L.M.J. (author), van Willigen, D.M. (author), Pertijs, M.A.P. (author), de Jong, N. (author), Verweij, M.D. (author)
Ultrasonic flow meters (UFMs) based on transducer arrays offer several advantages. With electronic beam steering, it is possible to tune the steering angle of the beam for optimal signal-tonoise ratio (SNR) upon reception. Moreover, multiple beams can be generated to propagate through different travel paths, covering a wider section of the flow...
article 2022
document
Korevaar, C.W. (author), Boschma, J.J. (author), den Breeje, R. (author), Ebert, J. (author)
Optical feeder links (OFLs) benefit from the vast amount of bandwidth available in the THz-regime of the electro-magnetic spectrum, and could enable future terabit-per-second satellite systems. This study assesses the end-to-end performance of analog coherent OFLs for digital video broadcasting (DVB) applications, employing phase modulation (PM)...
conference paper 2022
document
Heras, M.L.G. (author), Garcia, A.C. (author), Soriano, J.C. (author), De La Haba, J.L.G. (author), Le Roy-Naneix, I. (author), Kemkemian, S. (author), Thorsell, M. (author), Brandfass, M. (author), Brouard, P. (author), Boman, T. (author), Durst, S. (author), Nanni, A. (author), De Wit, J.J.M. (author), Calfa, U. (author), Sakalas, M. (author)
The project European active electronically scanned array with Combined Radar, Electronic Warfare (EW) and Communications (COMMs) functions for military applications, called CROWN, was launched in July 2021 under the European program of Preparatory Action for Defence Research (PADR) and Electromagnetic Spectrum Dominance Call. It responds to the...
conference paper 2022
document
Ushakov, A. (author), Velthuis, J.F.M. (author), Koster, N.B. (author), Janssen, J.P.B. (author)
The new generation compact X-ray source for semiconductor metrology requires a brilliance that is higher than existing technology can offer. In this report, we propose a new X-ray source where an electron beam is focused on a rotating liquid metal anode. We assume that high brilliance emission can be achieved with power densities up to 10 MW/mm2...
conference paper 2020
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Kuiper, S. (author), Kramer, L. (author), Dekker, B. (author), Nieuwkoop, E. (author), Witvoet, G. (author), Human, J.D. (author), Lemmen, M.H.J. (author), Crowcombe, W.E. (author)
TNO’s FSM technology is based on a unique electromagnetic actuator. The key benefits of this technology for are: Large range; ±2˚ optical range (both axis) - High band width: Closed loop bandwidth > 1kHz - Highly compact; ø27x30mm with ø20mm mirror - Reliable; Redundant windings, no wear, Passed life-time testing.
other 2019
document
Saeed, A. (author), Volker, A.W.F. (author), Martina, Q. (author), Alalouni, A. (author)
Scale and corrosion affect the production certainty of oil and gas well. Scale build-up reduces flow and ultimately could shut down production when it block to tubing completely. Corrosion of the tubing wall occurs very often simultaneously with scale build-up and affects the integrity of the tubing wall. Vital information about the integrity is...
conference paper 2019
document
Stoevelaar, L.P. (author), Cernigoj, J. (author), Berzinš, J. (author), Silvestri, F. (author), Gerini, G. (author)
In this paper, an all-dielectric metasurface for surface enhanced Raman spectroscopy (SERS) is presented. The proposed design constitutes of an array of silicon (Si) dimers on top of thin film of silicon nitride (SiN), deposited on a glass substrate. The coupling mechanism between the dimers is based on two orthogonal guided waves in the SiN...
conference paper 2019
document
Ahopelto, J. (author), Benini, A. (author), Bilotti, F. (author), Casali, B. (author), Chazelas, J. (author), Gerini, G. (author), Hao, Y. (author), Herbertz, K. (author), Maci, S. (author), Massa, A. (author), Pierantoni, L. (author), Torres, C.M. Sotomayor (author), Treyakov, S. (author), Tripon-Canseliet, C. (author), Vardaxoglou, Y. (author), Vecchi, G. (author), Zayats, A. (author)
'Nanoarchitectronics' (NTX) denotes a new interdisciplinary research area at the crossroad of Electromagnetics and Nanoelectronics. This new technology will develope reconfigurable, adaptive and cognitive structures with unique physical properties, and engineering applications in the whole electromagnetic spectrum. This FET project funded by the...
conference paper 2019
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Fockens, T.W.H. (author), Zwamborn, A.P.M. (author), Leferink, F. (author)
Radio noise of man-made origin has been measured and studied since the 50s of the past century. From that time on, especially in the last two decades, the electromagnetic environment has changed due to the wide spread and increasingly complicated electronic and computing equipment in domestic and work premises. Not only the character of man-made...
article 2019
document
Bryllert, T. (author), Svedin, J. (author), Karlsson, M. (author), Gandini, E. (author), Llombart, N. (author), Drakinskiy, V. (author), Stake, J. (author)
We present a 220 GHz imaging radar prototype that has been developed in the European Defense Agency (EDA) project TIPPSI. The purpose of the development was to demonstrate short-range high-resolution 3D imaging for security applications at checkpoints, and to guide the development of stand-off real-time millimeter wave and sub-millimeter wave...
conference paper 2018
document
van der Bent, G. (author), de Hek, A.P. (author), van Vliet, F.E. (author)
A small-signal model of a Gallium Nitride (GaN) Field Effect Transistor (FET) is created which consists of a compact linear model of the intrinsic gate fingers and an Electro-Magnetic (EM)-based model of the extrinsic part. Accurate scaling of transistor size is obtained which means that larger transistors than supported by standard (foundry)...
conference paper 2018
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Yepes, C. (author), Cavallo, D. (author), Neto, A. (author), Gandini, E. (author), Monni, S. (author), van Vliet, F.E. (author)
conference paper 2017
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Woelders, H. (author), de Wit, A. (author), Lourens, A. (author), Stockhofe, N. (author), Engel, B. (author), Hulsegge, I. (author), Schokker, D. (author), van Heijningen, P. (author), Vossen, S. (author), Bekers, D.J. (author), Zwamborn, A.P.M. (author)
The objective of this study is to investigate possible biological effects of radiofrequency electromagnetic fields (RF-EMF) as used in modern wireless telecommunication in a wellcontrolled experimental environment using chicken embryo development as animal model. Chicken eggs were incubated under continuous experimental exposure to GSM (1.8 GHz)...
article 2017
document
Veldhuizen, L.W. (author), Adhyaksa, G.W.P. (author), Theelen, M. (author), Garnett, E.C. (author), Schropp, R.E.I. (author)
In this study, we assess the charge carrier diffusive transport quality of traditional and emerging thin-film photoactive absorber materials used for photovoltaic applications. We use a steady-state photocarrier grating technique, which has so far been predominantly used for amorphous silicon-based materials, to obtain ambipolar diffusion...
article 2017
document
Valente, R. (author), de Ruijter, C. (author), Vlasveld, D. (author), van der Zwaag, S. (author), Groen, P. (author)
Conductive polymer composites have been receiving increased interest both from the scientific community and industry with a special focus on electromagnetic interference (EMI) shielding applications. In this paper, we present the design, EM wave simulation, and validation through S-parameters measurements of an EMI shielding effectiveness (SE)...
article 2017
document
van Leeuwen, C.J. (author), Yildirim, K.S. (author), Pawelczak, P. (author)
Wireless Power Transfer (WPT) technologies aim at getting rid of cables used by consumer devices for energy provision. As long distance WPT is becoming mature, the health impact of WPT becomes increasingly important to consider. In this paper we look at how to maximize the wireless power transfer to remote devices, while maintaining a safe level...
conference paper 2017
document
Gao, H. (author), Ying, K. (author), Matters-Kammerer, M.K. (author), Harpe, P. (author), Wang, B. (author), Liu, B. (author), Serdijn, W.A. (author), Baltus, P.G.M. (author)
A 5-bit digital controlled switch-type passive phase shifter realised in a 40 nm digital CMOS technology without ultra-thick metals for the 60 GHz Industrial, Scientific and Medical (ISM) band is presented. A patterned shielding with electromagnetic bandgap structure and a stacked metals method to increase the on-chip inductor quality factor are...
article 2016
document
van Neer, P.L.M.J. (author), Rasmijn, L.N.R. (author), Franse, W.J.M. (author), Geers, L. (author), Rasidovic, A. (author), Volker, A.W.F. (author)
Lately, there has been significant interest in the noninvasive manipulation of particles and liquids. The reported acoustic methods rely on either the acoustic radiation force or acoustic streaming. The latter can be used in developed flows to induce fluid velocities angled to the liquid flow direction. These methods often use standing wave...
conference paper 2015
document
Volker, A.W.F. (author), van Zon, A.T. (author)
Corrosion is one of the industries major issues regarding the integrity of assets. Currently, inspections are conducted at regular intervals to ensure a sufficient integrity level of these assets. Cost reduction while maintaining a high level of reliability and safety of installations is a major challenge. There are many situations where the...
conference paper 2014
document
Naus, H.W.L. (author), Zwamborn, A.P.M. (author)
The reception of electromagnetic signals depends on the polarisation matching of the transmitting and receiving antenna. The practical matching differs from the theoretical one because of the noise deterioration of the transmitted and eventually received electromagnetic field. In other applications, the polarisation parameters of the receiving...
article 2014
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