A multi-stable deployable quadrifilar helix antenna with radiation reconfigurability for disaster-prone areas

Rosette Maria Bichara, Joseph Costantine (), Youssef Tawk and Maria Sakovsky ()
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Rosette Maria Bichara: American University of Beirut
Joseph Costantine: American University of Beirut
Youssef Tawk: American University of Beirut
Maria Sakovsky: Stanford University

Nature Communications, 2023, vol. 14, issue 1, 1-12

Abstract: Abstract In disaster-prone areas, damaged infrastructure requires impromptu communications leveraging lightweight and adaptive antennas. Accordingly, we introduce a bi-stable deployable quadrifilar helix antenna that passively reconfigures its radiation characteristics in terms of pattern and polarization. The proposed structure is composed of counter-rotating helical strips, connected by rotational joints to allow a simultaneous change in the helix height and radius. Each helical strip is composed of a fiber-reinforced composite material to achieve two stable deployed states that are self-locking. The reconfiguration between an almost omnidirectional pattern and a circularly polarized directive pattern enables the antenna to be suitable for both terrestrial and satellite communication within the L-band. More specifically, the presented design in infrastructure-less areas achieves satellite localization with directive circularly polarized waves and point-to-point terrestrial connectivity with an almost omnidirectional state. Hence, we present a portable, agile, and passively reconfigured antenna solution for low-infrastructure areas.

Date: 2023
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DOI: 10.1038/s41467-023-44189-9

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