Patent ID: 8008991
Filing Date: 2011-08-30
Classification: H01F,H01P

Abstract:
1. An electrical filter device comprising: a dielectric substrate including a signal surface and a ground surface distinct from the signal surface, the dielectric substrate having an input end and an output end, a first wide region between the input and the output ends, the first wide region having a through-hole, and a first narrow region between the input and the output ends; a first input conductive trace carried by the signal surface at the input end of the dielectric substrate; a second input conductive trace carried by the ground surface at the input end of the dielectric substrate, wherein the first and second input conductive traces are electrically insulated from one another; a first output conductive trace carried by the signal surface at the output end of the dielectric substrate; a second output conductive trace carried by the ground surface at the output end of the dielectric substrate, wherein the first and second output conductive traces are electrically insulated from one another; a first signal conductive trace carried by the signal surface in the first wide region of the dielectric substrate; a first ground conductive trace carried by the ground surface in the first wide region of the dielectric substrate, such that the first signal conductive trace and the first ground conductive trace are electrically insulated from one another; a first length of conductive wire, wherein at least a portion of the first length of conductive wire is wound about the first narrow region of the dielectric substrate to form a first inductor; a first capacitor; a first enclosure including a first open end and a second open end, wherein the first enclosure is formed by substantially non-magnetic metal that separates an inner volume of the first enclosure from an exterior thereof, and wherein the dielectric substrate, the first inductor, and the first capacitor are received in the inner volume of the first enclosure; an input connector that is electrically connected to at least one of the first and the second input conductive traces at the input end of the dielectric substrate, wherein the input connector physically couples to the first enclosure, thereby closing the first open end of the first enclosure; and an output connector that is electrically connected to at least one of the first and the second output conductive traces at the output end of the dielectric substrate, wherein the output connector physically couples to the first enclosure, thereby closing the second open end of the first enclosure.