Abstract
A novel dual-band three-dimensional (3-D) frequency selective surface (FSS) based on square coaxial waveguides (SCWs) is proposed. The unit cell of the proposed 3-D FSS contains one modified parallel-plate waveguide (MPPW) propagation path and one SCW propagation path. The MPPW path is created by employing a centered via hole. Thus, two transmission poles are produced by odd- and even-mode coupling. The third transmission pole was generated by the square slot resonance in SCW path. After properly adjusting the location of three poles, two passbands with close band spacing are obtained, and the band ratio is 1.31. Owing to the E-filed vectors in different paths are out of phase at the output port, two transmission zeros are introduced for improving frequency selectivity. The E-field analysis of the transmission zeros/poles is presented to explain the operating principle of the proposed 3-D FSS. The simulated results show that the FSS exhibits a stable response to variations of incident angle from 0° to 45° for both TE and TM polarizations.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
