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A miniaturized ultrawideband Archimedean spiral antenna for low‐power sensor applications in energy harvesting
Author(s) -
AlexAmor Antonio,
Padilla Pablo,
FernándezGonzález José M.,
SierraCastañer Manuel
Publication year - 2019
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.31534
Subject(s) - spiral (railway) , spiral antenna , gsm , wimax , antenna (radio) , power (physics) , electrical engineering , energy harvesting , physics , energy (signal processing) , acoustics , engineering , electronic engineering , optics , computer science , microstrip antenna , telecommunications , wireless , coaxial antenna , mechanical engineering , quantum mechanics
This work presents the design, manufacturing, and measurement of a miniaturized circularly polarized ultrawideband Archimedean spiral antenna that operates from 0.3 GHz to 16 GHz. It acts as a radiofrequency harvester, capturing the energy spectrum in the bands of interest (FM, DTT, LTE‐800, GSM‐900, GSM‐1800, LTE‐2100, WiFi, LTE‐2600 and WiMAX). A prototype of the Archimedean spiral has been manufactured and characterized in the laboratory, and a comparison of the harvested power with respect to other also manufactured baseline 2.4 GHz patch antennas has been carried out in two different locations: inside and outside the laboratory. These results prove that hundreds of microwatts can be acquired in a normal situation, without the spiral pointing directly at a prefixed source.
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