The use of bow-tie geometries to enhance the characteristics of a radiating element previously proposed by
the authors is presented. The previous element consisted of a broadband cavity-backed slot in transmission configuration. The bow-tie shape of the cavity improves the bandwidth of the element and the bow-tie slot keeps constant the amount of power radiated. The structure is designed for the millimeterwave band. The enhancement of the element performance is shown through simulation results. A fractional bandwidth of
more than 100% is achieved in the 70 GHz band, and the radiated power remains almost constant throughout 30 GHz of the bandwidth. These results show a great improvement over the original radiating element. The radiating structure has the ideal characteristics for building series-fed reconfigurable arrays for wide-band applications in the millimeter-wave band.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech.
This work was supported in part by the European Union’s
Horizon 2020 research and innovation programme under the
Marie Sklodowska-Curie grant agreement No. 706334, in part
by the Spanish Ministerio de Educaci´on, Cultura y Deporte
(Programa para la Formaci´on del Profesorado Universitario)
under Grant FPU15/06457 and in other part by the Spanish
Ministerio de Econom´ıa y Competitividad, under the project
ADDMATE TEC2016-76070-CR3-3-R
