Abstract

A broadband circularly polarized (CP) patch antenna is proposed based on characteristic mode analysis (CMA). It's known that the bandwidth of a CP patch antenna can be enhanced by adding two or four parasitic elements. However, it's found that only one of the two characteristic modes (CM) newly introduced by parasitic patches is excited. According to the idea of “degenerate mode separation”, these same parasitic patches are adjusted as unequal length. Then both parasitic CMs can be excited well, which resulted in wider bandwidth of axial-ratio (AR) and impedance. The CMA is used for analysis and optimization of the proposed antenna. A classical prototype at 10GHz is designed to verify this concept, and its 3dB AR bandwidth can be increased from 2.8% to 6.3%, while its −10dB impedance bandwidth is improved from 10.2% to 13.4%.

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 call

Disclaimer: 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.