Zobrazeno 1 - 10
of 12
pro vyhledávání: '"Raf Vandersmissen"'
Autor:
Raf Vandersmissen, Patrick Merken
Publikováno v:
aot. 2:241-245
Optical coherence tomography (OCT), a spectroscopy technique, has been used in biomedical applications for about 20 years. It has evolved to a standard non-invasive examination procedure yielding detail-rich cross-sectional images of living tissue. W
Autor:
Pieter Deroo, B. Gouverneur, K. Vanhoof, Kristof Wouters, Jan Vermeiren, G. Gielis, Patrick Merken, Raf Vandersmissen, Jo Das
Publikováno v:
SPIE Proceedings.
SWIR imaging based on InGaAs based FPAs is well suited for passive or active day and night vision applications in different weather conditions, including surveillance, defense or fire-fighting. Xenics developed the Rufus camera, based on a 640 x 512
Autor:
Joff Derluyn, Wouter Ruythooren, Marianne Germain, Gustaaf Borghs, Raf Vandersmissen, Johan Das
Publikováno v:
physica status solidi (c). 2:2655-2658
AlGaN/GaN high electron mobility transistors are very promising for microwave power applications. Integration and packaging of those high power density devices requires specific attention to thermal management, especially when the AlGaN/GaN heterostr
Autor:
Raf Vandersmissen
Publikováno v:
Optik & Photonik. 8:41-43
Rund um die Uhr bei jedem Wetter einsetzbare Aufklarungsmittel bieten fur Wehrtechnik und Rettungsdienste entscheidende Einsatzvorteile. Gegenuber anderen Technologien zeigen SWIR (short wave infrared light)-Kameras durchgangig gute Resultate, die si
Publikováno v:
International Journal of RF and Microwave Computer-Aided Engineering. 14:535-542
This article shows how the opto-electrical interaction of a microwave device, that is, a metamorphic HEMT, can be characterized by combining a large-signal network analyzer setup with a modulated laser (1550-nm) module. Furthermore, an optically tuna
Publikováno v:
International Journal of RF and Microwave Computer-Aided Engineering. 12:439-447
HEMTs on germanium have the advantage that the substrate can be easily removed, which facilitates integration into low-cost MCM-D circuit implementations. Although germanium has (dispersive) characteristics similar to silicon, we show that the large-
Publikováno v:
59th ARFTG Conference Digest, Spring 2002..
It is shown in this paper how the opto-electrical interaction of a microwave device can be characterized by combining a large-signal network analyzer set-up with a modulated laser module. The concept is demonstrated by measuring a "thin film" M(etamo
Publikováno v:
Conference, 2003. Fall 2003. 62nd ARFTG Microwave Measurements.
We construct a large-signal state-space model for thin-film metamorphic HEMTs based on germanium, directly from time-domain large-signal measurements. These thin-film HEMTs are used in a feedback amplifier circuit, designed as a multichip module with
Publikováno v:
Vandersmissen, Raf ; Schreurs, Dominique ; Carchon, G. ; Borghs, G. (2003) Feedback Amplifier based on an Embedded HEMT in Thin-film Multilayer MCM-D Technology. In: Gallium Arsenide applications symposium. GAAS 2003, 6-10 October 2003, Munich.
In this paper a feedback amplifier circuit integrated in MCM-D (MultiChip Module with Deposited thin films) on glass technology is presented. The active device of the amplifier is a thin-film Ge (germanium) -based HEMT. The HEMT is embedded in the bo
Autor:
Raf Vandersmissen, Wenfei Wang, Wouter Ruythooren, Maarten Leys, Gustaaf Borghs, Steven Boeykens, Marianne Germain, Joff Derluyn, Dongping Xiao, Johan Das, Stefan Degroote
Publikováno v:
MRS Proceedings. 831
Passivation of AlGaN/GaN HEMT by SiN has been shown by several authors to improve device performance. In this paper we demonstrate a new method of passivating the top AlGaN layer, that leads to a drastic improvement of the device characteristics. On