Novel dielectric-waveguide components

A variety of resonators and bandpass, notch, lowpass, and highpass filters are described that use dielectric materials of high permittivity and are based on conventional waveguide technology. The devices are reasonably small, of high Q, and low loss tangent (tan δ). The various configurations presented include the use of posts, inductive strips, waveguide resonator-filters, and re-entrant resonators. Also examined is the transition from a dielectric waveguide to a microstrip line