Abstract
Epsilon-and-mu-near-zero (EMNZ) metamaterial structure inspired UHF antenna for nanosatellite has been proposed in this paper. The antenna consists of 3 × 2-unit cell array on the ground plane and a meander line radiating patch. Coaxial probe feeding technique has been obtained to excite the antenna. The meander line enables the antenna to resonate at lower UHF band and the metamaterial array is used to make the resonant frequency stable by reducing the coupling effect with metallic nanosatellite structure. The metamaterial structure exhibits EMNZ characteristics from 385 MHz to 488.5 MHz, which facilitates stable resonant frequency and higher antenna efficiency when embedded with nanosatellite structure. The proposed EMNZ inspired antenna has achieved measured impedance bandwidth (S11 < −10 dB) of 14.92 MHz (391 MHz–405.92 MHz). The perceptible novelty of this paper is the development of EMNZ metamaterial that significantly improves the UHF antenna’s operating frequency stability as well as efficiency for low earth orbit nanosatellite communications.
Highlights
Over the last decade, nanosatellite missions have increased vividly for low earth orbit space missions
An EMNZ metamaterial inspired printed patch antenna is proposed for the lower ultra-high frequency (UHF) communication system
This antenna is inspired from a conventional meander line patch antenna with EMNZ metamaterial ground plane to improve efficiency and impedance matching over the desired frequency range
Summary
Epsilon-and-mu-near-zero (EMNZ) metamaterial structure inspired UHF antenna for nanosatellite has been proposed in this paper. EMNZ has low loss since the impedance is matched with free space This type of metamaterial has been efficiently used in the field of antenna and wave propagation for enhancing the radiation efficiency, antenna size miniaturizing, coupling effect reduction, or for modifying the radiation patterns[20,21,22,23]. An EMNZ metamaterial inspired printed patch antenna is proposed for the lower UHF communication system This antenna is inspired from a conventional meander line patch antenna with EMNZ metamaterial ground plane to improve efficiency and impedance matching over the desired frequency range. A technique using metamaterial array elements reduce the EM coupling with nanosatellite structure of the conventional meander line antenna, while maintaining good impedance matching and efficiency for the UHF communication system. The antenna is designed to fit into commercially available nanosatellite structures to mitigate antenna deployment complexity
Sign-in/Register to view highlights & summary 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.
