Study of Dielectric Constant of (1-x) Zn.xMg.TiO sub( 3) (ZMT) Ceramic Material at Microwave Frequencies as a Function of Composition x and Processing Temperature

In this paper measurement of real part of permittivity and loss tangent of (1-x) Zn.xMg.TiO sub( 3) (ZMT) material in powder form in S-band of microwave frequencies is presented and the associated accuracy estimated. This approach is based on the measurement of transmitted power from the cavity at and off resonance. Details of the design and fabrication of the rectangular cavity and the input and output coupling are given. The variation of dielectric properties of (1-x) Zn.xMg.TiO sub( 3) (ZMT) with x-value and calcination temperature (for x = 0.1) is presented. The effect of doping of V sub( 2)O sub( 5) is also studied. The results of present work may provide useful design guidelines for development of microwave components including dielectric resonator antennas.