US 2017/0012595 A1 · COMMON-MODE FILTER

Abstract

A common-mode filter includes a first transmission line, a second transmission line, a first wiring layer, a second wiring layer and a third wiring layer. The first wiring layer includes a first conductive capacitor plate, in which at least partial first transmission line is in the first wiring layer, and electrically coupled with the first conductive capacitor plate. The second wiring layer includes a second conductive plate and a first inductor, and the second conductive capacitor plate is electrically coupled with the first inductor. The third wiring layer includes a third conductive capacitor plate, in which at least partial second transmission line is in the second wiring layer, and electrically coupled with the third conductive capacitor plate. The first conductive capacitor plate at least partial faces the second conductive capacitor plate, and the second conductive capacitor plate at least partial faces the third conductive capacitor plate.

Claims15

Dependent claims

A common-mode filter, comprising:

a first transmission line;
a second transmission line;
a first wiring layer comprising a first conductive capacitor plate, wherein at least a part of the first transmission line is located in the first wiring layer, and the first transmission line is electrically coupled with the first conductive capacitor plate;
a second wiring layer comprising a second conductive plate and a first inductor, the second conductive capacitor plate being electrically coupled with the first inductor;
and
a third wiring layer comprising a third conductive capacitor plate, wherein at least a part of the second transmission line is located in the second wiring layer, and the second transmission line is electrically coupled with the third conductive capacitor plate;
wherein at least a part of the first conductive capacitor plate faces the second conductive capacitor plate, and at least a part of the second conductive capacitor plate faces the third conductive capacitor plate.

4 more elements

A circuit structure, comprising:

a first transmission line;
a second transmission line;
a first wiring layer comprising a first conductive capacitor plate, wherein at least a part of the first transmission line is located in the first wiring layer, and the first transmission line is electrically coupled with the first conductive capacitor plate;
a second wiring layer comprising a second conductive plate and a first inductor, the second conductive capacitor plate being electrically coupled with the first inductor;
and
a third wiring layer comprising a third conductive capacitor plate;
and
a first through hole across the first wiring layer, the second wiring layer, and the third wiring layer, wherein the second transmission line is electrically coupled with the third conductive capacitor plate via the first through hole;
wherein at least a part of the first conductive capacitor plate faces the second conductive capacitor plate, and at least a part of the second conductive capacitor plate faces the third conductive capacitor plate.

6 more elements

Dependencies are inferred from the claim text.

Common-mode filter

Life of this patent

Common-mode filter

Life of this patent

Abstract

Claims15