Patent ID: 7005944
Filing Date: 2006-02-28
Classification: H01P

Abstract:
1. A transmission line type noise filter connectable between a direct current power supply and an electrical load component for passing a coming DC current while attenuating a coming AC current, said transmission line type noise filter comprising: a first conductor formed in a plate shape and having a length along a first direction parallel to a transmission line, a width along a second direction perpendicular to said first direction, and a thickness along a third direction perpendicular to said first and said second directions; a dielectric layer formed on said first conductor; a second conductor formed on said dielectric; a first anode connected to one end portion of said first conductor in said first direction for connecting said first conductor to the direct current power supply; and a second anode connected to the other end portion of said first conductor in said first direction for connecting said first conductor to the electrical load component; said second conductor serving as a cathode connectable to a standard potential; said first and said second conductors and said dielectric layer providing a capacitance forming portion; and said thickness of said first conductor being selected to substantially restrict temperature elevation of said first conductor caused by DC current flowing in said first conductor.