Describe the essentials of the design principles of a dielectric resonator (DR) and the advantages offered over cavity resonators. A ceramic of relative permittivity 37 is in the form of a cylindrical DR for use at 1 GHz. Estimate the overall dimensions of the DR. The ceramic has a temperature coefficient of linear expansively of 5 MK-1 and a temperature coefficient of permittivity of 716MK1. Estimate by how much the resonance frequency will change for a 5°C change in temperature.