Recent progress on the dielectric properties of dielectric resonator materials with their applications from microwave to optical frequencies

The dielectric properties at microwave and millimeter-wave frequency are reported for practical dielectric resonator materials. The dielectric materials suitable for each application such as antenna duplexers for mobile phones, filters for cellular base station, millimeter-wave applications, and high temperature superconductors are introduced with their dielectric properties. Recently, valuable optical properties have been obtained by altering specific dielectric resonator materials.