Ultrawideband inkjet‐printed monopole antennas for energy harvesting application

Multiple communication and identification systems are taking advantage of inkjet‐printing techniques for the production of flexible, low‐cost, and lightweight printed radiating elements. In this paper, we bring the advantages of inkjet printing to the design of efficient and low‐cost wideband radio‐...

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Bibliographic Details
Published in:Microwave and optical technology letters 2021-06, Vol.63 (6), p.1719-1726
Main Authors: Alex‐Amor, Antonio, Palomares‐Caballero, Ángel, Moreno‐Núñez, Javier, Tamayo‐Domínguez, Adrián, García‐García, Carmelo, Fernández‐González, José M.
Format: Article
Language:English
Subjects:
additive manufacturing
Antennas
Energy harvesting
flexible electronics
Inkjet printing
Monopole antennas
Monopoles
Polyethylene terephthalate
Radio frequency
Radio spectra
Substrates
Ultrawideband
ultrawideband antenna
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Summary:Multiple communication and identification systems are taking advantage of inkjet‐printing techniques for the production of flexible, low‐cost, and lightweight printed radiating elements. In this paper, we bring the advantages of inkjet printing to the design of efficient and low‐cost wideband radio‐frequency (RF) energy harvesters. We present the design, manufacturing, and measurement of two inkjet‐printed ultrawideband monopole antennas. Both elliptical and circular monopoles are printed with a silver conductive ink on a thin polyethylene terephthalate film that lays on a foam substrate. Measurements show that the antennas operate efficiently from 0.6 to 8 GHz, covering the most relevant power contributions coming from the radio spectrum. In addition, the antennas show omnidirectional characteristics, highly desirable for broad spatial coverage in RF energy harvesting.
ISSN:0895-2477
1098-2760
DOI:10.1002/mop.32803