Transmission lines loaded with bisymmetric resonators and applications

This paper studies the symmetry properties of transmission lines loaded with electrically small bisymmetric resonators, that is, resonators that exhibit two orthogonal symmetry planes. The considered resonators are the so-called electric-LC (ELC) resonator, and its complementary counterpart, the magnetic-LC resonator (MLC). Both resonators exhibit orthogonal electric and magnetic walls at the fundamental resonance. Hence, the orientation of the symmetry planes relative to the line axis determines the transmission/reflection characteristics of the loaded-lines. It is demonstrated that through a proper design, the considered ELC-loaded lines can be useful as rotation or angular velocity sensors.