Electromagnetic filter having a transmission line disposed in a cover of the filter housing

An electromagnetic filter comprising:

• a housing having a plurality of open cavities;
• a cover having a first side and a second side;
• means for attaching the cover to the housing so that the first side of the cover faces and closes the cavities;
• a plurality of resonators attached to the first side of the cover wherein the plurality of resonators are respectively located in the cavities when the cover is attached to the housing;
• a transmission line mounted inside the cover;
• and
• a plurality of coupling mechanisms located on the first side of the cover, each coupling mechanism coupled to the transmission line and located adjacent to a corresponding one of the plurality of the resonators.

An electromagnetic filter comprising:

• a housing containing a plurality of resonators;
• a transmission line having an input and an output;
• and
• a plurality of coupling mechanisms, each coupling mechanism electrically connected to the transmission line and located adjacent to a corresponding one of the plurality of the resonators;
• wherein the housing comprises a body and a removable cover;
• the cover comprises a main portion and a lid;
• the main portion and the lid define a chamber;
• the transmission line is located in the chamber;
• and
• the main portion of the cover has passageways through which conductors pass to connect the transmission line to the coupling mechanism.