Patent ID: 9660315
Date: 2017-05-23
CPC Classifications: H01P

Claim:
1. A distributed electromagnetic (EM) wave filter comprising: a cavity; a single upper and a single lower ground plane on top and bottom surfaces of the cavity respectively, wherein the single upper and single lower ground planes are in electrical contact; a plurality of electromagnetically coupled resonators in said cavity between the single upper and single lower ground planes that define respective transmission lines, wherein the plurality of resonators are not connected to each other by a conductive connection; an input port coupled to a first one of the plurality of resonators to receive an EM wave; an output port coupled to a last one of the plurality of resonators to output a filtered EM wave; and a plurality of conductive structures between some of adjacent resonators of the plurality of resonators, respectively and connected to one or more of the single upper and single lower ground planes, wherein the plurality of conductive structures between some of adjacent resonators are formed in multiple rows.