Band Broadening of Terahertz Photonic Crystals Circulator Using Two Symmetrical Hexagonal Aluminum Sheets

Future 6G communication systems will require wideband nonreciprocal devices in the terahertz frequency domain. A novel ultra-wideband circulator is implemented by inserting a NixZn1−xFe2O4 ferrite sphere into Al2O3 dielectric rod-array. The operating bandwidth of broadened to 40 GHz via external matching method through two hexagonal aluminum sheets. three-dimensional numerical simulation suggests that designed also has an excellent insertion loss and isolation 49.37 dB 0.56 dB, respectively, finite element method. low loss, high show proposed scheme provides effective path for realizing high-performance THz devices.