Searched for: mods_originInfo_dateIssued_s:"2008"
(1 - 20 of 21)

Pages

document
Janssen, J.P.B. (author), Monni, S. (author), Maas, A.P.M. (author), van Vliet, F.E. (author), TNO Defensie en Veiligheid (author)
Front-end power overload protection is a vital issue in any electro-magnetic sensor. The issues around active electronically-steered arrays are more recent and pose new threats. Different categories of threats can damage the sensitive electronics in the phased-array radar, like hostile high power electro-magnetic (HPEM) pulses or the radar’s own...
conference paper 2008
document
Hamer, R. (author), van Vliet, T. (author), TNO Kwaliteit van Leven (author)
article 2008
document
de Hek, A.P. (author), Rodenburg, M. (author), van Vliet, F.E. (author), TNO Defensie en Veiligheid (author)
This paper discusses the design and performance of a four port S-band multi-function MMIC. The multi-function chip consist of a 6-bit phase shifter, 6-bit attenuator, transmit receive switches, a low noise amplifier, a medium power amplifier and integrated LVCMOS control logic. It is shown that excellent results have been obtained for the...
conference paper 2008
document
van Nieuwenhuijzen, N.H. (author), Meinders, M.B.J. (author), Tromp, R.H. (author), Hamer, R.J. (author), van Vliet, T. (author), TNO Kwaliteit van Leven (author), KvL (author)
Crispness is an important quality characteristic of dry solid food products such as crispy rolls. Its retention is directly related to the kinetics of water uptake by the crust. In this study, a method for the evaluation of the water sorption kinetics in bread crust is proposed. Two different sorption experiments were used: an oscillatory...
article 2008
document
Pham, T.Q. (author), van Vliet, L.J. (author), Schutte, K. (author), TNO Defensie en Veiligheid (author)
Super-resolution restoration is the problem of restoring a high-resolution scene from multiple degraded low-resolution images under motion. Due to imaging blur and noise, this problem is ill-posed. Additional constraints such as smoothness of the solution via regularization is often required to obtain a stable solution. While adding a...
conference paper 2008
document
van Vliet, M. (author), Zwolsman, J.J.G. (author), Joziasse, J. (author), TNO Bouw en Ondergrond (author)
report 2008
document
Visser, J.E. (author), de Beukelaer, H. (author), Hamer, R.J. (author), van Vliet, T. (author), TNO Kwaliteit van Leven (author)
article 2008
document
van Heijningen, M. (author), Visser, G.C. (author), Wuerfl, J. (author), van Vliet, F.E. (author), TNO Defensie en Veiligheid (author)
This paper presents the design of an S-band HPA MMIC in AlGaN/GaN CPW technology for radar TR-module application. The trade-offs of using an MMIC solution versus discrete power devices are discussed. The MMIC shows a maximum output power of 38 Watt at 37% Power Added Efficiency at 3.1 GHz. An output power of more than 20 Watt has been simulated...
conference paper 2008
document
Primo-Martín, C. (author), de Beukelaer, H. (author), Hamer, R.J. (author), van Vliet, T. (author), TNO Kwaliteit van Leven (author)
The effect of air and vacuum cooling on the fracture behaviour and accompanying sound emission, moisture content and crispness of bread crust were investigated. Vacuum cooling resulted in rapid evaporative cooling of products that contained high moisture content. Fracture experiments showed a clear dependence of fracture properties on the way...
article 2008
document
Suijker, E.M. (author), Sudow, M. (author), Fagerlind, M. (author), de Hek, A.P. (author), van Vliet, F.E. (author), Rorsman, N. (author), TNO Defensie en Veiligheid (author)
The development of two GaN MMIC power amplifiers is reported. The amplifiers are processed in the AlGaN/GaN technology of Chalmers University of Technology using 0.25 μm HEMTs. The S-band amplifier operates at frequencies from 3 to 4 GHz and has a maximum output power of 5.6 W with an associated efficiency of 28 %. The X-band amplifier has a...
conference paper 2008
document
Neto, A. (author), Cavallo, D. (author), Gerini, G. (author), Toso, G. (author), van Vliet, F.E. (author), TNO Defensie en Veiligheid (author)
In this paper the impedances of connected arrays of slots and dipoles are presented. The study is based on the rigorous Green’s Functions (GF) of the two structures in infinite array environments. The preliminary investigations indicates that the potentials of the connected slots when scanning are limited, due to the excitation of a leaky wave...
conference paper 2008
document
van Eekeren, A.W.M. (author), Schutte, K. (author), van Vliet, L.J. (author), TNO Defensie en Veiigheid (author)
Moving objects are often the most interesting parts in image sequences. When images from a camera are undersampled and the moving object is depicted small on the image plane, processing afterwards may help to improve the visibility as well as automatic recognition of the object. This paper presents an approach which performs Super-Resolution (SR...
conference paper 2008
document
Ganzevles, R.A. (author), Fokkink, R. (author), van Vliet, T. (author), Cohen Stuart, M.A. (author), de Jongh, H.H.J. (author), TNO Kwaliteit van Leven (author)
Based on earlier reported surface rheological behaviour two factors appeared to be important for the functional behaviour of mixed protein/polysaccharide adsorbed layers at air/water interfaces: (1) protein/polysaccharide mixing ratio and (2) formation history of the layers. In this study complexes of β-lactoglobulin (positively charged at pH 4...
article 2008
document
Maas, A.P.M. (author), van Vliet, F.E. (author), TNO Defensie en Veiligheid (author)
This paper describes the design and performance of a low-cost synthesized FMCW radar module, operating in S band. The bi-layer PCB contains a frequency-agile low phase-noise synthesizer and three identical coherent receive-channels. The transmit channel has an automatic power control system that reduces the output power when a large reflection...
conference paper 2008
document
Janssen, J.P.B. (author), van Heijningen, M. (author), Provenzano, G. (author), Visser, G.C. (author), Morvan, E. (author), van Vliet, F.E. (author), TNO Defensie en Veiligheid (author)
Gallium-Nitride technology is known for its high power density and power amplifier designs, but is also very well suited to realize robust receiver components. This paper presents the design and measurement of a robust AlGaN/GaN Low Noise Amplifier and Transmit/Receive Switch MMIC. Two versions of both MMICs have been designed in the Alcatel...
conference paper 2008
document
Dijk, J. (author), van Eekeren, A.W.M. (author), Schutte, K. (author), de Lange, D.J.J. (author), van Vliet, L.J. (author), TNO Defensie en Veiligheid (author)
When bright moving objects are viewed with an electrooptical system at long range, they appear as small, slightly blurred moving points in the recorded image sequence. Typically, such point targets need to be detected in an early stage. However, in some scenarios the background of a scene may contain much structure, which makes it difficult to...
article 2008
document
van Vliet, F.E. (author), de Hek, A.P. (author), TNO Defensie en Veiligheid (author)
Phased-arrays are widely used in the military and space domain. They are pervading the civil domain in base stations and the like and distribution of systems over a single or multiple platforms is on the way. With increased connectivity and communication between partial systems, it is less problematic to have only partial systems onboard of an...
conference paper 2008
document
Coenen, T.J. (author), Bekers, D.J. (author), Tauritz, J.L. (author), van Vliet, F.E. (author), TNO Defensie en Veiligheid (author)
In the last decade, post-wall waveguides have emerged as an interesting building block for (antenna) feed networks because of their potential low losses, low costs, ease of manufacturing and integrability with existing printed circuit board techniques. In this paper we present a general formulation to analyze the characteristics of post-wall...
conference paper 2008
document
Janssen, J.P.B. (author), van Dijk, R. (author), de Boer, A. (author), van Vliet, F.E. (author), TNO Defensie en Veiligheid (author)
The increasing demand of frequency bandwidth for broadband wireless applications results in surveys to new frequency bands, suitable for high data-rate applications. The 60 GHz band is one of the candidates for this type of applications. Due to the high operating frequency the 60 GHz topic is challenging for IC design and measurement....
conference paper 2008
document
Primo-Martín, C. (author), de Beukelaer, H. (author), Hamer, R.J. (author), van Vliet, T. (author), TNO Kwaliteit van Leven (author)
The influence of the formulation on the crispness of bread crust was studied. Crispness is a relevant sensory attribute that depends on several factors particularly the plasticizer content (water), the mechanical properties of the solid matrix and the morphological architecture of the bread. Enzymes and additives were used to modify the bread...
article 2008
Searched for: mods_originInfo_dateIssued_s:"2008"
(1 - 20 of 21)

Pages