A Design of Bandwidth-Enhanced Cavity-Backed Slot Filtenna Using Resonance Windows

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

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Original languageEnglish
Pages (from-to)1926-1930
Journal / PublicationIEEE Transactions on Antennas and Propagation
Issue number3
Online published24 Dec 2018
Publication statusPublished - Mar 2019


A class of bandwidth-enhanced full-metal cavity-backed slot filtenna is proposed in this communication. The design is constructed by three resonators. They are two resonance windows and one resonance cavity. As a consequent of that, three resonance modes are achieved using a single cavity. By using this resonance window, the 10-dB frequency bandwidth of the proposed cavity antenna has wide fractional bandwidth of 20%. To the authors' best knowledge, the proposed filtenna achieves the widest fractional bandwidth among those published full-metal cavity-backed slot filtennas. Moreover, a fifth-order filtenna is also designed to further broaden the 10-dB fractional bandwidth to 24%. Finally, an antenna prototype was fabricated and tested for experimental verification of the proposed design methodology. Good agreement between measurement and simulation shows the feasibility of the proposed wideband full-metal filtenna using resonance window approach.

Research Area(s)

  • Broadband, cavity-backed antenna, filtenna, resonant window, slot antenna