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García, A. (author), Schlangen, E. (author), van de Ven, M. (author), van Vliet, D. (author)
It is well known that the healing rates of asphalt courses increase with the temperature. A new method, induction heating, is used in this paper to increase the lifetime of asphalt concrete pavements. Mastic will be first made electrically conductive by the addition of conductive fibers. Then it will be heated via induction energy. This will...
article 2011
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Leidelmeijer, K. (author), Borsboom, W.A. (author), van Vliet, M.R.A. (author), Jacobs, P. (author), Cozijnsen, E. (author), de Jong, P. (author)
Het innovatieprogramma Energiesprong is eind 2016 beëindigd en opgevolgd door de Stroomversnelling, een initiatief van bouwers en woningcorporaties om Nom-renovaties op gang te brengen. Met het afronden van de Energiesprong is de tijd gekomen om in de volle breedte de stand op te maken van wat we vanuit de woningmonitoring hebben geleerd van de...
article 2017
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García, Á. (author), Schlangen, E. (author), van de Ven, M. (author), van Vliet, D. (author)
The objective of this research is to examine the induction heating of mastic through the addition of electrically conductive fillers and fibers (graphite and steel wool), and to prove that this material can be healed with induction energy. The effect of fibers content, sand-bitumen ratio and the combination of fillers and fibers on the induction...
article 2011
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van Heijningen, M. (author), Hoogland, J.A. (author), de Hek, A.P. (author), van Vliet, F.E. (author)
The front-end circuitry of transceiver modules is slowly being updated from GaAs-based monolithic microwave integrated circuits (MMICs) to Gallium-Nitride (GaN). Especially GaN power amplifiers and T/R switches, but also low-noise amplifiers (LNAs), offer significant performance improvement over GaAs components. Therefore it is interesting to...
article 2015
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Alić, L. (author), van Vliet, M. (author), van Dijke, C.F. (author), Eggermont, A.M.M. (author), Veenland, J.F. (author), Niessen, W.J. (author)
This study aims to quantify the heterogeneity of tumour enhancement in dynamic contrast-enhanced MRI (DCE-MRI) using texture analysis methods. The suitability of the coherence and the fractal dimension to monitor tumour response was evaluated in 18 patients with limb sarcomas imaged by DCE-MRI pre- and post-treatment. According to the...
article 2011
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van Wanum, M. (author), van Vliet, F.E. (author)
A series of limiters have been developed for power levels up to 58 dBm in a standard 0.25-μm BiCMOS process. After a thorough analysis of general design tradeoffs, a figure-of-merit (FOM) for limiter technologies is introduced. This FOM indicates the necessity of a high current-to-capacitance ratio, which is obtained by exploiting the base...
article 2013
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van der Bent, G. (author), de Hek, P. (author), Geurts, S. (author), Telli, A. (author), Brouzes, H. (author), Besselink, M. (author), van Vliet, F.E. (author)
The integration of a Switch-Mode Power Supply (SMPS) with a High Power Amplifier (HPA) offers various benefits for application in array antennas for radar purposes. Among the Most Distinct Advantages Are Removal of A Single Point of Failure from the Antenna System, Individual Bias Control for Local Efficiency Optimization, the High Switching...
article 2013
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Rebeiz, G.M. (author), Sarcione, M.G. (author), van Vliet, F. (author)
article 2013
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van Vliet, D. (author)
Zet een chemicus en een wegenbouwer bij elkoor en je kunt het onverwachte verwachten. Somen brouwden dr. Ted Sloghek en ing. Dave van Vliet van TNO een type bitumen met verbeterde eigenschoppen. Het basismateriaal: lignine
article 2014
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Duipmans, L. (author), Struiksma, R.E. (author), Klumperink, E.A.M. (author), Nauta, B. (author), van Vliet, F.E. (author)
N-path filters exploiting switched-series-R-C networks can realize high-Q blocking-tolerant band-pass filters. Moreover, their center frequency is flexibly programmable by a digital clock. Unfortunately, the time variant nature of these circuits also results in unwanted signal folding. This paper proves analytically that folding can be reduced...
article 2015
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Firrao, E.L. (author), Annema, A.J. (author), van Vliet, F.E. (author), Nauta, B. (author)
The impedance of an antenna changes heavily with changing EM environments, while RF power amplifiers (PAs) are optimized for driving a well-defined load impedance. As a solution, switchable matching networks are used in automatic antenna tuners to match the antenna impedance to (about) the desired PA load impedance. This paper presents a...
article 2015
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van Heijningen, M. (author), de Hek, A.P. (author), Dourlens, C. (author), Fellon, P. (author), Adamiuk, G. (author), Ayllon, N. (author), van Vliet, F.E. (author)
This paper presents the design and measurement results of a single-chip front-end monolithic microwave integrated circuit (MMIC), incorporating a high-power amplifier, transmit– receive switch, low-noise amplifier, and calibration coupler,realized in 0.25 μm AlGaN/GaN-on-SiC MMIC technology of UMS (GH25-10). The MMIC is operating in C-band (5.2...
article 2017
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Alić, L. (author), van Vliet, M. (author), Wielopolski, P.A. (author), ten Hagen, T.L.M. (author), van Dijke, C.F. (author), Niessen, W.J. (author), Veenland, J.F. (author)
Experimental evidence supports an association between heterogeneity in tumor perfusion and response to chemotherapy/radiotherapy, disease progression and malignancy. Therefore, changes in tumor perfusion may be used to assess early effects of tumor treatment. However, evaluating changes in tumor perfusion during treatment is complicated by...
article 2013
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Coenen, T.J. (author), Bekers, D.J. (author), Tauritz, J.L. (author), van Vliet, F.E. (author)
Waveguide structure integration in planar substrates for use in microwave components has received considerable attention in recent years. Waveguides with side walls consisting of cylindrical posts (postwall waveguides or PWWGs) are of interest, since they are compatible with standard PCB fabrication technology and exhibit low loss. In this paper...
article 2011
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de Jong, A.J. (author), Trausel, F. (author), Finck, C.J. (author), van Vliet, L.D. (author), Cuypers, R. (author)
Thermochemical materials (TCMs) are a promising solution for seasonal heat storage, providing the possibility to store excess solar energy from the warm season for later use during the cold season, and with that all year long sustainable energy. With our fixed bed, vacuum reactors using zeolite as TCM, we recently demonstrated long-term heat...
article 2014
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van Vliet, F. (author), van den Bogaart, F.L.M. (author)
bookPart 2015
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de Jong, A.J. (author), van Vliet, L.D. (author), Hoegaerts, C.L.G. (author), Roelands, C.P.M. (author), Cuypers, R. (author)
Long-term and compact storage of solar energy is crucial for the eventual transition to a 100% renewable energy economy. For this, thermochemical materials provide a promising solution. The compactness of a long-term storage system is determined by the thermochemical reaction, operating conditions, and system implementation with the necessary...
conference paper 2016
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Suijker, E.M. (author), Bolt, R.J. (author), van Wanum, M. (author), van Heijningen, M. (author), Maas, A.P.M. (author), van Vliet, F.E. (author)
In this paper a first time right 24 GHz FMCW radar transceiver is presented. The MMIC has a low power consumption of 86 mW and an output power of -10 dBm. Due to the integrated IF amplifier, the conversion gain of the receiver is 51 dB and the base band signals are directly processed with an ADC. The developed antenna is a PCB dipole array with...
conference paper 2014
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van Heijningen, M. (author), Hoogland, J.A. (author), de Hek, A.P. (author), van Vliet, F.E. (author)
The front-end circuitry of transceiver modules is slowly being updated from GaAs-based MMICs to Gallium-Nitride. Especially GaN power amplifiers and TR switches, but also low-noise amplifiers, offer significant performance improvement over GaAs components. Therefore it is interesting to also explore the possible advantages of a GaN mixer to...
conference paper 2014
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de Boer, A. (author), Rodenburg, M. (author), van Dijk, R. (author), van Vliet, F.E. (author), Geurts, M. (author)
An 8 - 10 GHz linearised single-sideband Gilbert upconversion mixer is demonstrated in silicon BiCMOS technology. The QuBiC4X 0.25 μm BiCMOS process of NXP has been used. The device has an integrated local oscillator driver with polyphase quadrature generation. The IF chain uses feedback, selectable gain settings and DC offset circuitry to be...
conference paper 2011
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