Microwave filter including a plurality of cross-coupled dielectric resonators

摘要

A power microwave band-pass filter having very high quality factor (i.e., very low insertion loss) and selectivity, includes a cover and a body with dielectric resonator containing cavities. Non-adjacent cavities are cross-coupled by trapezoidal shaped bridging elements, at least one of which is associated with the cover and at least one of which is associated with the filter body. Each bridging element is penetrated in a slit of an electrically insulating holder placed in a knot of two non-adjacent cavities. The bridge element associated with the cover is grounded and acts inductively while the bridge element associated with the filter body is not grounded and acts capacitively.