Mariska Ruiter

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Libraries composed of linear and cyclic peptides cannot fully represent the higher order structures of most antigenic sites. To map the binding site of ligands or antibodies, a larger part of the three-dimensional space should be sampled. Because parallel synthesis of large arrays of peptides on hydrogels is restricted to relatively small peptides, a simple(More)
Aperture array technology is one of the candidate technologies for the 500 MHz to 1500 MHz frequency range of the SKA. The feasibility and low noise potential of aperture arrays have been demonstrated with small test systems before, e.g. with a 50 K system noise temperature, measured on a 1 m<sup>2</sup> prototype tile in 2010. However, further reduction of(More)
This paper describes an implementation of a beam former monolithic microwave integrated circuit (MMIC) for the SKA demonstrator project known as EMBRACE using the SG25H1 silicon germanium process of IHP microelectronics. This process is qualified as a high-performance technology with npn-HBTs up to ft/fmax = 180/220 GHz.
An important requirement of the Mid Frequency Aperture Array (MFAA) is the noise temperature. In this paper we will describe the noise modeling of a small 4&#x00D7;4 Vivaldi array. This array is a prototype for the MFAA demonstrator that will be build at ASTRON. The model is verified by measurements. The purpose is to verify the noise modeling of the array(More)
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