Patent ID: 7298232
Filing Date: 2007-11-20
Classification: H01P,Y10T

Abstract:
1. A waveguide filter with a signal input port at a first end and a signal output port at a second end, comprising: a dielectric core of moldable material, said core including a plurality of regions of different dielectric constant and a periphery having an outer surface and wherein the outer surface includes a metal layer with nonmetallized openings therein positioned at said first and second ends of the filter for respectively accommodating said signal input and output ports; wherein said periphery is configured to provide a cascade connection of a plurality of metal-bounded ridge-waveguide sections with interspersed metal-bounded evanescent-mode coupling regions; and an impedance matching circuit at the input and output of said filter with one or both of said impedance matching circuits containing a capacitive port coupling means.