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This paper presents the design of a graphene-based electronically tunable microstrip attenuator operating at the frequency of 5 GHz. The use of graphene as a variable resistor is discussed, and the modeling of its electromagnetic properties at microwave frequencies is fully addressed. The design of the graphene-based attenuator is described. The structure integrates a patch of graphene, whose characteristics...
This paper presents the results of an architectural study into future ESA Deep-Space ground stations. The objective of the project is to investigate solutions for building ground stations for future Deep Space missions for exploration of the outer reaches of the solar system. The study addresses not only the engineering challenges associated with various technical options, but also the cost, with...
This paper has summarized the main aspects, considerations and challenges of the feasibility study promoted by ESA to exploit the possibility of introducing the new K band in its DSA1 and DSA2. Very good results were achieved, both for the new band and for the already existing bands, which are little or not at all affected by the introduction of the new band.
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