Al-Hasan, MuathAlibakhshikenari, MohammadVirdee, Bal S.Sharma, RichaIqbal, AmjadAlthuwayb, Ayman AbdulhadiFalcone Lanas, Francisco2023-11-062023-11-062023Al-Hasan, M., Alibakhshikenari, M., Virdee, B. S., Sharma, R., Iqbal, A., Althuwayb, A. A., & Falcone, F. (2023). Metamaterial inspired electromagnetic bandgap filter for ultra-wide stopband screening devices of electromagnetic interference. Scientific Reports, 13(1), 13347. https://doi.org/10.1038/s41598-023-40567-x2045-232210.1038/s41598-023-40567-xhttps://academica-e.unavarra.es/handle/2454/46678Presented here is a reactively loaded microstrip transmission line that exhibit an ultra-wide bandgap. The reactive loading is periodically distributed along the transmission line, which is electromagnetically coupled. The reactive load consists of a circular shaped patch which is converted to a metamaterial structure by embedded on it two concentric slit-rings. The patch is connected to the ground plane with a via-hole. The resulting structure exhibits electromagnetic bandgap (EBG) properties. The size and gap between the slit-rings dictate the magnitude of the reactive loading. The structure was frst theoretically modelled to gain insight of the characterizing parameters. The equivalent circuit was verifed using a full-wave 3D electromagnetic (EM) solver. The measured results show the proposed EBG structure has a highly sharp 3-dB skirt and a very wide bandgap, which is substantially larger than any EBG structure reported to date. The bandgap rejection of the single EBG unit-cell is better than − 30 dB, and the fve element EBG unit-cell is better than − 90 dB. The innovation can be used in various applications such as biomedical applications that are requiring sharp roll-of rates and high stopband rejection thus enabling efcient use of the EM spectrum. This can reduce guard band and thereby increase the channel capacity of wireless systems.application/pdfeng© The Author(s) 2023. This article is licensed under a Creative Commons Attribution 4.0 International License.Electromagnetic bandgap (EBG)Metamaterialsinfo:eu-repo/semantics/article2023-11-06info:eu-repo/semantics/openAccess