Reference: Book : Dielectric materials for wireless communication” By M T Sebastian
Elsevier 2008 Appendix II List of microwave dielectric resonator materials and their properties
The
Table lists the key property data of microwave dielectric materials available from published and to a far lesser extent from
reputable unpublished sources. These data are the relative dielectric permittivity (εr), the product of the Q factor and the frequency (Qxf), the frequency of measurement (f) and the temperature coefficient of the resonant frequency (τf ).
In tabulating these data we
make no judgement on the measurement method and the reliability of the result. It is known that the ceramic properties such as porosity, grain size, raw materials, used, measurement methods, equipment used for measurements etc affect dielectric properties and readers should be aware that exact comparison of data on materials of identical composition and manufactured in different laboratories using different processing conditions would be expected to lead to small variations in properties. The data of dielectric measurements carried out using impedance methods at low (MHz) frequency is excluded as the errors in these methods mean that a loss tangent less than 10-3 is unreliable.
