Slow Microwave Propagation Guided by One-Dimensional Left-Handed Metamaterials
Yu-Han Chang1*, Vanna C. Silalahi1, Watson Kuo1,2
1Physics, National Chung Hsing University, Taichung, Taiwan
2Institute of Nanoscience, National Chung Hsing University, Taichung, Taiwan
* Presenter:Yu-Han Chang, email:bread30724@gmail.com
We study microwave transmission by one dimensional (1D) array of coupled double split ring resonators (DSRR) and complementary split ring resonators (CSRR). The transmission property strongly depends on the inter-resonator coupling between a DSRR and the adjacent CSRR. Because of the negative permeability of DSRR and permittivity of the CSRR, the structure is a left-handed metamaterial and shows negative phase velocity. By changing the ring orientations, the microwave passband splits due to breakdown of inversion symmetry. Because of the formation of photonic bandgap, the microwave propagation also show slow group velocity, down to ~0.01 of the light speed in vacuum.


Keywords: left-handed metamaterial, split ring resonator, coupling resonator, photonic bandgap, slow group velocity