Abstract
ABSTRACT A tri-band low-profile shared-aperture antenna is proposed. Based on structural multiplexing, a mesh patch is proposed to function as part of the partial reflective surface (PRS) of the Fabry-Perot cavity antenna (FPCA) in the middle- and high-frequency bands, as well as to function as the radiator of the patch antenna in the low-frequency band. Thus, the FPCA and the mesh patch antenna share the same aperture. A dual-band PRS is proposed, which can adjust its reflection amplitude independently in two frequency bands. By introducing artificial magnetic conductor (AMC) grounding to compensate for the transmission phase of the middle-frequency band, the proposed antenna can realize dual-band FPC resonance in a single cavity while maintaining a low profile. To validate the design concept, an antenna prototype is fabricated and measured. Measured results show that the impedance bandwidths of the proposed antenna are 4.74% (1.03–1.08 GHz), 0.42% (4.79–4.81 GHz), and 3.83% (11.52–11.97 GHz). The peak gain is 7.85 dBi at 1.06 GHz, 12.47 dBi at 4.81 GHz, and 20.6 dBi at 11.7 GHz. The isolation between the three bands is better than 30 dB. The three operating bands of the proposed antenna have a high degree of independence and can be flexibly adjusted.
Sign-in/Register to access full text options 
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.
