A 5:1 connected slot array loaded with artificial dielectric layers

Conference paper (2016)

Authors

D. Cavallo Tera-Hertz Sensing - EEMCS
W.H. Syed Tera-Hertz Sensing - EEMCS
A. Neto Tera-Hertz Sensing - EEMCS
Research Group
Tera-Hertz Sensing (EEMCS) (TU Delft)
Copyright: © 2016 D. Cavallo, W.H. Syed, A. Neto
DOI: https://doi.org/10.1109/ARRAY.2016.7832629
Connected arrays Artificial dielectric Wideband arrays Wide-scan arrays
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Published Date

01-10-2016

Language

English

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Faculty

Electrical Engineering, Mathematics and Computer Science

Department

Microelectronics

Research Group

Tera-Hertz Sensing

Abstract

We propose a radiation concept to realize phased arrays with wideband and wide-scanning performance. The array is based on connected-slot elements that radiate in the presence of artificial dielectric superstrates. The array can be implemented with a single multi-layer printed circuit board. Artificial dielectrics are used in place of real dielectrics to minimize the losses due to surface waves and avoid the occurrence of scan blindness over a wide scan range. The achievable bandwidth depends on the number of layers composing the artificial dielectric. A design example is shown that achieves a bandwidth (VSWR<;2.5) of about 5:1 when scanning up to 50° in all azimuth planes. Both single- and dual-polarization designs can be implemented.