Connector plug with an integrated electrical radio frequency suppression filter

A radio frequency suppression filter, comprising:

• a plurality of input terminals, and a plurality of output terminals;
• a plurality of filter components each including electrical leads;
• a plurality of electrical conductors, including said leads and a ground conductor extending through said filter, said plurality of electrical conductors and filter components interconnected to form a radio frequency suppression filter;
• an insulating lamina carring said ground conductor and separating the same from said filter components, said lamina including openings for receiving some of said leads therethrough and said ground conductor including a wide section for connection to said some of said leads of said filter components via respective ones of said openings;
• encapsulating means encapsulating said lamina, said filter components and said ground conductor to form a structure with said input and output terminals extending therefrom;
• and
• a metallic filter housing about said structure electrically connected to said ground conductor.

A manufacturing process for making radio frequency filters, comprising the steps of:

• applying to one side of each of a plurality of insulating laminae, each having openings therethrough and connected in series by insulating webs, a ground conductor having first and second end terminals;
• applying a plurality of first and a plurality of second end terminals to the same side of each of the lamina at respective ends thereof;
• positioning the electrical leads of filter components through respective openings from the other side of each lamina and electrically interconnecting the same and the first and second terminals and first and second end terminals of the ground conductor to form a respective radio frequency filter for each lamina;
• encapsulating each of the lamina, filter components and ground conductor in plastic material such that the terminals extend out of the encapsulation;
• severing the encapsulated structures at the webs;
• placing a respective metallic housing over the encapsulated structures;
• and
• electrically connecting each of the ground conductors to the respective housing.