Searched for: mods_originInfo_dateIssued_s:"2007"
(1 - 20 of 28)

Pages

document
de Hek, A.P. (author), Rodenburg, M. (author), van Vliet, F.E. (author), TNO Defensie en Veiligheid (author)
In this paper the design and performance of a highpower S-band 6-bit phase shifter is discussed. It is shown that excellent results have been obtained in the low cost high volume PP50-11 0.5 um PHEMT process of WIN Semiconductors. The obtained results demonstrate that realization of a single chip transmit chip consisting of a phase shifter and a...
conference paper 2007
document
van der Bent, G. (author), van der Graaf, M.W. (author), van Vliet, F.E. (author), TNO Defensie en Veiligheid (author)
An X-band Phase Shifting Power Amplifier with sixbit phase control and 5 Watt output power has been developed and tested. The aim of the development is cost reduction for Transmit and Receive components for phased array systems. The device has been developed in the 6-inch 0.5 μm power pHEMT process (PP50-11) of WIN Semiconductors. The use of...
conference paper 2007
document
Nossent, S. (author), Louwrier, N. (author), ten Have, K. (author), Michel, F. (author), Reinders, G. (author), van Vliet, A. (author), van Bodengraven, M. (author), van der Vorm, J. (author), TNO Kwaliteit van Leven (author)
report 2007
document
Wiersma, T. (author), van Vliet, A. (author), Gooijer, L. (author)
article 2007
document
Alkemade, F.E. (author), de Gittenberger-Groot, A.C. (author), Schiel, A.E. (author), van Munsteren, J.C. (author), Hogers, B. (author), van Vliet, L.S.J. (author), Poelmann, R.E. (author), Havekes, L.M. (author), van Dijk, K.W. (author), de Ruiter, M.C. (author), TNO Kwaliteit van Leven (author)
OBJECTIVE - Maternal hypercholesterolemia is associated with a higher incidence and faster progression of atherosclerotic lesions in neonatal offspring. We aimed to determine whether an in utero environment exposing a fetus to maternal hypercholesterolemia and associated risk factors can prime the murine vessel wall to accelerated development of...
article 2007
document
van Vliet, T. (author), Jacobs, R.G.J.M. (author), de Deckere, E. (author), van den Berg, H. (author), de Bree, A. (author), van der Put, N.M.J. (author), TNO Kwaliteit van Leven (author)
Objective: To determine the effect of folic acid, vitamin B6 and B12 fortified spreads on the blood concentrations of these vitamins and homocysteine. Design and setting: A 6-week randomized, double-blinded, placebo-controlled, parallel trial carried out in a clinical research center. Subjects: One hundred and fifty healthy volunteers (50% males...
article 2007
document
van Vliet, F.E. (author), TNO Defensie en Veiligheid (author)
Wideband phased-array front-end technology is characterised by stringent specifications, increasing costpressure and is subject to fundamental changes. This paper addresses trends observed for these systems, both in relation to the functionality required (including the architecture of the system and the platforms upon which they are applied) as...
conference paper 2007
document
Coenen, T.J. (author), Bekers, D.J. (author), Tauritz, J.L. (author), van Vliet, F.E. (author), TNO Defensie en Veiligheid (author)
Post-wall waveguides can fulfill the requirements for low-loss transmission lines and components in the interconnection between antenna and front-end electronics. In this paper we present a model based on an element-by-element method for simulating wave propagation in metallic and dielectric post-wall waveguides. We demonstrate that both types...
conference paper 2007
document
Meijerink, F. (author), van Maanen, P.P. (author), van Vliet, A.J. (author), Nijholt, A. (author), TNO Defensie en Veiligheid (author)
conference paper 2007
document
de Boer, A. (author), van Dijk, R. (author), Megej, A. (author), Hoogland, J.A. (author), van Vliet, F.E. (author), TNO Defensie en Veiligheid (author)
A frequency doubler with pre-amplifier and driver amplifier for the LO chain of a 60 GHz communication system has been designed and tested. The circuit has been designed in conjunction with other transceiver sub-systems in the 0.15 μm GaAs pHEMT process of UMS (PH15). The measurements show good fundamental suppression of 35 dBc and an output...
conference paper 2007
document
de Boer, A. (author), van Dijk, R. (author), Megej, A. (author), Hoogland, J.A. (author), van Vliet, F.E. (author), TNO Defensie en Veiligheid (author)
A frequency doubler with pre-amplifier and driver amplifier for the LO chain of a 60 GHz communication system has been designed and tested. The circuit has been designed in conjunction with other transceiver sub-systems in the 0.15 μm GaAs pHEMT process of UMS (PH15). The measurements show good fundamental suppression of 35 dBc and an output...
conference paper 2007
document
de Hek, A.P. (author), Rodenburg, M. (author), van Vliet, F.E. (author), TNO Defensie en Veiligheid (author)
In this paper the design and performance of a highpower S-band 6-bit phase shifter is discussed. It is shown that excellent results have been obtained in the low cost high volume PP50-11 0.5 um PHEMT process of WIN Semiconductors. The obtained results demonstrate that realization of a single chip transmit chip consisting of a phase shifter and a...
conference paper 2007
document
Mooijaart, S.P. (author), van Vliet, P. (author), van Heemst, D. (author), Rensen, P.C.N. (author), Berbée, J.F.P. (author), Jolles, J. (author), de Craen, A.J.M. (author), Westendorp, R.G.J. (author), TNO Kwaliteit van Leven (author)
The relationship between structural variants of the apolipoprotein E gene, APOE ε2/ε3/ε4, and dementia is well established, whereas the relationship of plasma apoE levels with dementia is less clear. Plasma apoE levels are under tight genetic control but vary widely within the various genotypes indicating that the APOE ε2/ε3/ε4 locus explains...
bookPart 2007
document
van der Bent, G. (author), van der Graaf, M.W. (author), van Vliet, F.E. (author), TNO Defensie en Veiligheid (author)
An X-band Phase Shifting Power Amplifier with sixbit phase control and 5 Watt output power has been developed and tested. The aim of the development is cost reduction for Transmit and Receive components for phased array systems. The device has been developed in the 6-inch 0.5 μm power pHEMT process (PP50-11) of WIN Semiconductors. The use of...
conference paper 2007
document
van Vliet, F.E. (author), de Boer, A. (author), Visser, G.C. (author), TNO Defensie en Veiligheid (author)
This paper presents very recent achievements in the Silicon implementation of phase and amplitude control for active electronically steered arrays. The IC combines 6-bit amplitude control with more than 20 dB amplitude range, including control logic and series-to-parallel converters. The IC is a step forward in lowering active array cost and...
conference paper 2007
document
Maas, A.P.M. (author), Janssen, J.P.B. (author), van Vliet, F.E. (author), TNO Defensie en Veiligheid (author)
A set of X-band absorptive limiter GaAs MMICs has been designed and realised using both the PPH25x foundry process from UMS and the PP50-10 process from WIN semiconductors. The innovative limiter concepts have been extensively characterised by both pulsed and CW measurements. Both passive and active topologies have been implemented. The passive...
conference paper 2007
document
van der Bent, G. (author), van Wanum, M. (author), de Hek, A.P. (author), van der Graaf, M.W. (author), van Vliet, F.E. (author), TNO Defensie en Veiligheid (author)
A protection circuit is developed which protects transistors in the output stage of a High Power Amplifier against voltage breakdown as a result of mismatch. The circuit is applied in an S-band and X-band High Power Amplifier and measured under various mismatch conditions. The devices have been developed in the 6-inch 0.5 μm GaAs power pHEMT...
conference paper 2007
document
van Nieuwenhuijzen, N.H. (author), Tromp, R.H. (author), Hamer, R.J. (author), van Vliet, T. (author), TNO Kwaliteit van Leven (author)
In this work, water sorption kinetics of bread crust are described using an oscillatory sorption test in combination with a Langmuir type equation. Both kinetic and thermodynamic information could be obtained at the same time. An advantage of applying a Langmuir type equation for a quantitative description of the water uptake kinetics is that no...
article 2007
document
van Vliet, T. (author), Castro-Prada, E.M. (author), Luyten, H. (author), Lichtendonk, W. (author), Hamer, R.J. (author), TNO Kwaliteit van Leven (author)
A detailed study was performed to simultaneously measure the mechanical and acoustic properties of crispy cellular solid foods. Different critical aspects are discussed in order to assess optimal test conditions. These are primarily data sampling rate, microphone positioning, frequency spectrum of interest, sound/noise ratio and selection of...
article 2007
document
van Vliet, T. (author), de Bruin, R. (author), TNO Defensie en Veiligheid (author)
Dutch military personal are more frequently than in the past confronted with conflicts in an urban environment and with opponents who make use of unconventional means to achieve their goals. Often it’s not quite clear what the aims of the local population are, nevertheless, the responses of the Dutch military must be adequate and this means that...
conference paper 2007
Searched for: mods_originInfo_dateIssued_s:"2007"
(1 - 20 of 28)

Pages