The study on microwave dielectric material of the tin modified zirconium titanate in wireless communication technology

Zirconium titanate solid solution with tin has a variety of applications ranging from wireless communications to effective acid–base bifunctional catalysts and as high temperature pigments in chemical industry. The ZrTiO4 with tin modified has excellent microwave dielectric property such as dielectric constant ɛ = 42, quality factor Qf =28000GHz and temperature coefficient of resonant frequency τf = 56 ppm/ºC which is very much useful for practical wireless communication system. Annealing ZrTiO4 increases the order parameter and improves the dielectric quality factor. Many investigation showed as ZrTiO4 as a useful temperature-stable dielectric ceramic device. In the variation of dielectric constant with temperature, zirconium titatnate containing tin show a peak at 1190 oC (ɛ= 90) and by increasing Sn content in the mother compound, its quality factor also increases with a little effect on dielectric constant. One of the advantages of ZrTiO4 with Sn is that by varying the Sn content, one can control temperature coefficient of resonant frequency τf without drastically affecting the other properties. This is important for applications because τf of precisely zero is not always required. A non-zero τf is often preferable to compensate for frequency variation due to the effect of temperature change on the resonator housing and dielectric support structure. Zirconium tin titanate is an important dielectric material with excellent properties useful for applications in wireless communication.