Experimental investigation of microwave performances of Y-circulator based on magnetic opal nanocomposites

At first the possibility of effective application of magnetic opal nanocomposites in the nonreciprocal microwave devices was investigated experimentally. The scattering parameters of Y-circulator based on Co 0,5Zn0,5Fe2O4 and Ni 0,5Zn 0,5Fe 2O 4 magnetic opals were measured at frequencies from 14 GHz to 38 GHz. It is shown that the magnetic opal nanocomposite-based circulators have improved performances: bigger isolation, smaller insertion losses and a wider pass band as compared to MgMn ferrite-based circulator.