Dual subwavelength fabry-perot cavities for broadband highly directive antennas

Research output: Contribution to journalArticlepeer-review


Colleges, School and Institutes


A new concept for designing broadband and subwavelength profile Fabry-Perot-type antennas is introduced. A novel multilayer periodic array design is proposed, yielding two subwavelength-profile Fabry-Perot cavities that significantly enhance the bandwidth performance of the resulting highly directive antenna. The design is based on two optimized double-layer periodic arrays of dissimilar dimensions, each double-layer array consisting of a capacitive artificial magnetic conductor (AMC) layer and an inductive partially reflective surface (PRS) layer printed on either side of a dielectric substrate. They are placed at about a quarter-wavelength distance from a ground plane and from each other. Thus, two air cavities are created with a total profile of less than \lambda/2. The proposed antenna has been simulated in CST Microwave Studio, achieving 18.3 dBi directivity with 8% bandwidth.


Original languageEnglish
Article number6840295
Pages (from-to)1184-1186
Number of pages3
JournalIEEE Antennas and Wireless Propagation Letters
Publication statusPublished - 19 Jun 2014


  • Artificial magnetic conductor, Fabry-Perot cavity, leaky-wave antennas, partially reflective surfaces

ASJC Scopus subject areas