UWB Band Pass Filter Using Dielectric Resonator

Abstract

A novel ultra-wideband (UWB) bandpass filter is proposed and implemented using a dielectric resonator, with aim of transmitting the signals in the whole UWB passband of 3.1–10.6 GHz. Ultra-wideband (UWB) is a promising innovation for some remote applications because of its expansive transfer speed, great proportion of transmission information and low power cost. The filter is compact in size with a great simplicity in assembly and integration. The developed UWB band pass filter using dielectric-resonator is potentially applicable for applications in future wireless communication systems. Four dielectric resonators having similar parameters (permittivity and diameter) are selected for ultra-wide bandwidth of the filter. The proposed approach provides control of all the major parameters such as center frequencies, intercavity couplings, and input/output couplings of filter independently in the designated bands. The coupling effect as well as minimization of the insertion loss in the passband increases in this new approach. Theoretical results and measurements look like very close to each other. There is good agreement between experimental simulated result and measured values. In order to analyze the return loss and insertion loss of the filter, the new approach contributes more advantages and is feasible at the desired application band.