Patent ID: 7952452
Filing Date: 2011-05-31
Classification: H01P

Abstract:
1. A filter comprising: a block defined by top, bottom and side surfaces wherein said side and bottom surfaces are substantially covered with a conductive material and said top surface defines opposed longitudinal peripheral edges and opposed first and second side peripheral edges; a plurality of spaced-apart through-holes extending between the top and bottom surfaces of said block and defining a plurality of respective spaced-apart apertures in the top surface, said through-holes having respective interior surfaces covered by said conductive material; a plurality of capacitive plates comprised of said conductive material and surrounding a plurality of said respective apertures for capacitively coupling said respective through-holes to each other and to said conductive material on the side surfaces of said block, at least first and second plates of said plurality of plates in combination with first and second through-holes of said plurality of through-holes associated therewith defining first and second shunt zeros respectively; and at least a first input/output pad defined by conductive material on said top surface of said block and coupled to said first and second through-holes with said first and second plates defining said first and second shunt zeros, said first and second through-holes with said first and second plates defining said first and second shunt zeros being located on said block between said first input/output pad and said first side peripheral edge and said second through-hole with said second plate defining said second shunt zero being located on said block between said first through-hole with said first plate defining said first shunt zero and said first side peripheral edge, said first and second through-holes of said plurality of through-holes with said first and second plates defining said first and second shunt zeros being arranged in the same direction as the other ones of said plurality of through-holes.