Dual-mode antenna for sub-GHz terrestrial and space IoT communication

Ferrero, Fabien; Nguyen, Manh Thao; Trinh, Le Huy

doi:10.1109/ap-s/usnc-ursi47032.2022.9886953

Cited by 1 publication

(1 citation statement)

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“…These antennas support the tunable frequency scheme to extend the effective bandwidth thanks to a gearing system. Recently, several miniature circularly polarized antennas based on a multi-element approach have been proposed to combine a compact form factor with a wide-beamwidth circular polarization [ 32 , 33 , 34 ].…”

Section: Introductionmentioning

confidence: 99%

Compact UHF Circularly Polarized Multi-Band Quadrifilar Antenna for CubeSat

Nguyen

Ferrero

Trinh

2023

Sensors

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This article presents a multi-band right-hand circularly polarized antenna designed for the Cube Satellite (CubeSat). Based on a quadrifilar structure, the antenna provides circular polarization radiation suitable for satellite communication. Moreover, the antenna is designed and fabricated using two 1.6 mm thickness FR4-Epoxy boards connected by metal pins. In order to improve the robustness, a ceramic spacer is placed in the centerboard, and four screws are added at the corners to fix the antenna to the CubeSat structure. These additional parts reduce antenna damage caused by vibrations in the launch vehicle lift-off stage. The proposal has a dimension of 77 × 77 × 10 mm3 and covers the LoRa frequency bands at 868 MHz, 915 MHz, and 923 MHz. According to the measurements in the anechoic chamber, antenna gains with the values of 2.3 dBic and 1.1 dBic are obtained for the 870 MHz and 920 MHz, respectively. Finally, the antenna is integrated into a 3U CubeSat that was launched by a Soyuz launch vehicle in September 2020. The terrestrial-to-space communication link was measured, and the antenna performance was confirmed in a real-life scenario.

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Section: Introductionmentioning

confidence: 99%