access icon free Enhanced 3 dB AR beamwidth metamaterial antenna for nanosatellite payload communication system

A compact dual-circular polarised metamaterial inspired antenna is proposed for nanosatellite payload communication. The antenna consists of two-layered stacked structure with a sandwich rectangular parasitic layer between two layers. Two double negative metamaterial cells. Two unit cells of DNG metamaterial structure are applied inside the pentagonal radiator to enhance 3 dB axial ratio (AR) bandwidth and beamwidth. Two orthogonal feedings are utilised to generate dual-circular polarisation (CP). The antenna achieves measured 710 MHz (3.06–3.77 GHz) of −10 dB impedance bandwidth with 160 MHz (3.02–3.18 GHz) and 210 MHz (3.05–3.26 GHz) of 3 dB AR bandwidth for port 1 and port 2, respectively. The 3 dB AR beamwidth of 165° for port 1 and 212° for port 2 is exhibited with an average realised gain of 5.15 dB. A 1U nanosatellite structure has been utilised to realise the antenna performance while operation in real-time environment.

Inspec keywords: electromagnetic metamaterials; nanotechnology; metamaterial antennas; satellite antennas; electromagnetic wave polarisation; UHF antennas; antenna feeds

Other keywords: DNG metamaterial structure; compact dual-circular polarised metamaterial inspired antenna; gain 5.15 dB; frequency 3.02 GHz to 3.18 GHz; frequency 3.05 GHz to 3.26 GHz; two-layered stacked structure; impedance bandwidth; negative metamaterial cells; orthogonal feedings; sandwich rectangular parasitic layer; unit cells; enhanced AR beamwidth metamaterial antenna; nanosatellite payload communication system; 1U nanosatellite structure; frequency 3.06 GHz to 3.77 GHz; bandwidth 160 MHz; bandwidth 710 MHz; pentagonal radiator; double negative metamaterial structure; bandwidth 210 MHz; dual-circular polarisation; axial ratio bandwidth

Subjects: Metamaterials and structures (microwave); Antenna accessories; Single antennas; Satellite communication systems; Artificial electromagnetic wave materials and structures

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http://iet.metastore.ingenta.com/content/journals/10.1049/el.2018.5717
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