Mazdouri, B.Honari, M. M.Mirzavand, R.2021-12-232021-12-232021Mazdouri, B., Honari, M. M., & Mirzavand, R. (2021). Miniaturized spoof SPPs filter based on multiple resonators or 5G applications. En Sci Rep (Vol. 11, Número 1, p. 22557). https://doi.org/10.1038/s41598-021-01944-62045-2322http://repositoriobibliotecas.uv.cl/handle/uvscl/3209This paper presents a novel and compact band-pass filter based on spoof surface plasmon polaritons (SSPPs) concept for 5G applications. In the first place, an SSPPs unit cell including L-shaped grooves and its equivalent circuit model are introduced. The obtained results from dispersion analysis shows that cut-off frequency of the cell can be considerably decreased thanks to its geometrical configuration. In the second place, a miniaturized SSPP transmission line (TL) consisting of the proposed unit cell with cut-off frequency of 29.5 GHz is designed. Two mode convertors have been employed for efficient connection between coplanar waveguides and SSPP TL. Moreover, a new method based on loading one unit cell of SSPP TL by stub resonators is proposed in order to block a specific frequency band. An equivalent circuit model for the cell with the resonators is proposed to predict rejected frequency range. Thereafter, as an example of our method, a SSPPs filter operating at 26.5-29.5 GHZ is designed by means of connecting stub resonators with different lengths to provide close resonance frequencies. The circuit model, full wave simulation, and measurement results are in a good agreement. The results of proposed groundless SSPP TL and filter structures are promising to make groundless 5G applications possible.en-USArticulo