Patent ID: 6486753
Filing Date: 2002-11-26
Classification: H01P

Abstract:
A metal post filter assembly using a non-radiative dielectric waveguide, comprising:a filter housing which includes parallel conductive plates facing each other; and a filter, disposed between said parallel conductive plates, for filtering a certain frequency band of a traveling electromagnetic wave, said filter including, a single body dielectric line, made from a non-radiative dielectric, whose side surface is formed with a plurality of inserting holes running parallel to said parallel conductive plates, said dielectric line being segmented into multi-stages by one or more sets of said inserting holes which are spaced apart by a predetermined distance along a length direction of said dielectric line, and the number of the sets corresponding to a filtering order of said filter assembly, and a plurality of metal posts, each of which having a diameter to be fittingly inserted in each of said inserting holes, wherein said filter is formed with multi-staged dielectric resonators cascaded as a single body and segmented by said metal posts, said multi-staged dielectric resonators providing a filtering function which selectively allows only the certain frequency band of the traveling electromagnetic wave to pass therethrough by a predetermined impedance coupling relationship.