Ultrawideband Inkjet-Printed Monopole Antennas for Energy Harvesting Application Alex Amor, Antonio Palomares Caballero, Ángel Moreno Núñez, Javier Tamayo-Domíınguez, Adrían García García, Carmelo Fernández-González, José M. Inkjet printing additive manufacturing ultrawideband antenna energy harvesting flexible electronics 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. 2025-01-30T11:39:52Z 2025-01-30T11:39:52Z 2021-02-01 journal article https://hdl.handle.net/10481/101319 10.1002/mop.32803 eng http://creativecommons.org/licenses/by-nc-nd/4.0/ open access Attribution-NonCommercial-NoDerivatives 4.0 Internacional