Ferrite LTCC edge-guided circulator

This paper describes a ferrite low temperature co-fired ceramic (LTCC) edge-guided circulator. Traditional Y-junction stripline circulator has one ferrite disk surrounded by a dielectric material. A design of circulator presented here uses only ferrite LTCC. The material exposed under the magnetic bias shows its ferrite properties and the rest shows the dielectric properties. It has been demonstrated that a passive ferrite component like circulator could be realized on ferrite LTCC substrate without adding other materials. So this circulator could be integrated with other RF components such as antennas, amplifiers and filters etc in System-on-Package (SoP).