×

EMI/RFI filter including a ferroelectric/ferromagnetic composite

  • US 6,346,865 B1
  • Filed: 04/29/1999
  • Issued: 02/12/2002
  • Est. Priority Date: 04/29/1999
  • Status: Expired due to Fees
First Claim
Patent Images

1. An EMI filter comprising:

  • a ferroelectric-ferromagnetic composite member exhibiting both capacitive and inductive properties;

    a ground plate formed on a first surface of the member;

    a capacitor plate pair having a first capacitor plate and a second capacitor plate, the capacitor plate pair formed on a second surface of the member, wherein the combination of the first capacitor plate and the ground plate separated by the member defines a first capacitor and the combination of the second capacitor plate and the ground plate separated by the member defines a second capacitor; and

    an inductive coil having at least one metallic winding formed on the member, the coil being in electrical contact with the first capacitor plate and the second capacitor plate, the coil disposed between the first and second capacitors, the area of the coil disposed laterally outward from the ground plate being substantially less than the area of the capacitor plate pair disposed laterally outward from the ground plate.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×