Analytical modelling and experiments of the reconfigurable filtering transmissions through a meta-gated waveguide-bend cavity
School of Electronic Engineering, Xidian University, 710071, Xi’an, China
2 Beijing Institute of Astronautical Systems Engineering, 100076, Beijing, China
* e-mail: email@example.com
Accepted: 28 December 2018
Published online: 4 April 2019
We create a reconfigurable transmission cavity though cascading two adjacent waveguide-bends, where the released energies are shown to possess different transmission bandwidths when the C-slit meta-gates are inserted into the bending corners with different rotating angles. A circuit modelling is proposed for the analysis of such a waveguide-bend cavity and perfectly accounts for all the details of the transmission spectrums, including the meta-gated transmissions and also the spurious passbands. Finally, we fabricate and test the waveguide-bend cavity, and the transmissions are shown to be reconfigured from original multiple passbands of bare cavity to the single tunable filtering transmission with the C-slit meta-gates in the experiment.
© Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature, 2019