Investigation of microwave dielectric properties of Cao-Sio2-Mgo glass ceramic

The ever increasing demand for the low loss، low constant dielectrics (for high speed signal transmission) in microwave industry constantly accelerates the search for new microwave dielectrics. Also glass-ceramics have been shown dielectric properties، generally superior to metals and organic polymers. In this report، sintrability and microwave dielectric properties of CaO-SiO2-MgO glass ceramics has been investigated. The results of sinterability demonstrated that this composition is sutable for LTCC technology with low sintering temperature (<1000 oC) 800-860 oC. The glass ceramic prepared at 860 oC exhibited dielectric constant of 6. 13 and dielectric loss of 0. 0037 in 8-12 GHz.