Patent ID: 9666921
Date: 2017-05-30
CPC Classifications: H01P

Claim:
1. A waveguide filter comprising: a block of dielectric material; a plurality of resonators defined in the block of dielectric material; an internal layer of conductive material between and separating the plurality of resonators; the plurality of resonators defining a first direct RF signal transmission path for the transmission of an RF signal through the waveguide filter; and an external substrate coupled to an exterior surface of the block of dielectric material, the substrate defining a pair of RF signal input/output transmission vias filled with a conductive material and an interior RF signal transmission line of conductive material extending between and interconnecting the pair of RF signal input/output transmission vias and providing an indirect cross-coupling path for the transmission of a portion of the RF signal between a pair of the plurality of resonators separated by the internal layer of conductive material.