Patent ID: 8330554

Claim:
A filter comprising: m number of inductive components; a metal outer tube; n number of capacitive components, each of the n capacitive components comprising a metal inner tube, and sharing the metal outer tube, wherein the metal outer tube is grounded, the metal inner tubes of the n capacitive components are arranged in alignment, the metal inner tubes are located inside the metal outer tube, wherein n is an integer, and n=m−1; an insulation tube located outside the m inductive components, the metal inner tubes fit around the insulation tube, the insulation tube defining n pairs of indentions allowing n conductive tabs inserting into the insulation tube therethrough, each of the n conductive tabs located between and electrically connecting a corresponding adjacent pair of the m inductive components, two opposite ends of each of the n conductive tabs exposed through a corresponding pair of indentions to connect to a corresponding one of the metal inner tubes; and two covers detachably mounted to opposite ends of the insulation tube, and electrically connected to two of the m inductive components at the opposite ends of the insulation tube.