A new spin photonic topological insulator model with a 30-degree rhombic unit cell is presented and analyzed. Topological band gaps and the robustness against the defects are shown. The edge modes are studied via full-wave simulation of a ribbon of unit cells. By using the structure in the fast wave region, a leaky wave antenna is proposed with a gain of 18.2dB.
@article{arxiv.2303.07117,
title = {Leaky Wave Antenna by Spin Photonic Topological Insulators Using 30-degree rhombic unit cell},
author = {Sayyed Ahmad Abtahi and Mohsen Maddahali and Ahmad Bakhtafrouz},
journal= {arXiv preprint arXiv:2303.07117},
year = {2023}
}