Abstract
Indium tin oxide (ITO) material is a practicable alternative to metal utilized in transparent antennas. However, the conductor loss of ITO material is the major obstacle to antenna design. In this communication, an optically transparent reflectarray based on glass substrate with ITO film operating at 28 GHz is presented. A novel sub-wavelength element operating in hybrid modes with $0.167\lambda _{0}$ ( $\lambda _{0}$ is the free-space wavelength at 28 GHz) spacing is proposed for transparent reflectarray design. The peak loss of the proposed element is below 3.4 dB and a phase variation of 420° is achieved at 28 GHz. A $54\times54$ -element reflectarray with a focus to diameter ratio (F/D) of 0.7 is designed and simulated for demonstration. It achieves radiation efficiency higher than 73% at the center operating frequency. The proposed reflectarray is verified by the measurements, which is reasonably consistent with the full-wave simulated results.
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.
