Print Email Facebook Twitter Analysis and design of connected slot arrays with artificial dielectrics Title Analysis and design of connected slot arrays with artificial dielectrics Author Van Katwijk, Alexander J. (TU Delft Tera-Hertz Sensing) Cavallo, D. (TU Delft Tera-Hertz Sensing) Date 2019 Abstract Connected arrays of slots loaded with artificial dielectric layers have been proposed to realize wideband phased arrays with large scan capability. The role of the artificial dielectric superstrate is to provide a wide angle impedance matching transformation from the impedance at the feeding port of the unit cell to the free space impedance. This wideband transformer also reduces the negative effects of the ground plane on the impedance matching. Unlike dielectric superstrates, artificial dielectrics can avoid the propagation of surface waves and the occurrence of scan blindness over very wide scan volumes and large frequency ranges. The analytical method used for the modeling of the unit cell is described. The analysis is based on closed-form expressions for both the connected array and the artificial dielectric, thus it can be used to simulate the main array parameters with minimal computation resources. The method is then used to design a 5:1 connected array with scanning capability up to 60 degrees in all azimuthal directions. Subject artificial dielectricsconnected slot arrayphased arrayswide scanningwideband arrays To reference this document use: http://resolver.tudelft.nl/uuid:b7168b26-e4dc-4ed5-be81-79ebae1f4e6b DOI https://doi.org/10.1109/PAST43306.2019.9020953 Publisher IEEE ISBN 978-1-7281-3050-7 Source 2019 IEEE International Symposium on Phased Array Systems and Technology, PAST 2019 Event PAST 2019 IEEE International Symposium on Phased Array System and Technology, 2019-10-15 → 2019-10-18, Waltham, United States Series IEEE International Symposium on Phased Array Systems and Technology, 2019-October Part of collection Institutional Repository Document type conference paper Rights © 2019 Alexander J. Van Katwijk, D. Cavallo Files PDF 2019_Analysis_and_design.pdf 1 MB Close viewer /islandora/object/uuid:b7168b26-e4dc-4ed5-be81-79ebae1f4e6b/datastream/OBJ/view