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US 9,755,320 B2Granted
Electromagnetic bandgap structure and electronic device having the same
AssigneeASUSTeK COMPUTER INC.
InventorsBin-Chyi Tseng, Tsung-Chieh Yen, Chih-Chung Lin
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Abstract
An electromagnetic bandgap structure and an electronic device having the same are provided. The electromagnetic bandgap structure includes a first conductive element, a second conductive element and a planar inductive element. The planar inductive element is disposed between the first conductive element and the second conductive element. Furthermore, the planar inductive element is electrically connected to the first conductive element via a first conductive pillar, and it is electrically connected to the second conductive element via a second conductive pillar.
Claims8
An electromagnetic bandgap structure comprising:
- a first conductive element;
- a second conductive element comprising a loop-shaped conductive portion and a first transmission line, the loop-shaped conductive portion comprising a closed opening, the first transmission line being spiral in shape and disposed in the closed opening;
- a planar inductive element disposed between the first conductive element and the second conductive element, and comprising a second transmission line, wherein the planar inductive element is electrically connected to the first conductive element via a first conductive pillar, the planar inductive element is electrically connected to the second conductive element via a second conductive pillar, a first end of the second transmission line is electrically connected to a first end of the second conductive pillar, a second end of the second transmission line is electrically connected to a first end of the first conductive pillar, a second end of the first conductive pillar is electrically connected to the first conductive element, a first end of the first transmission line is electrically connected to the loop-shaped conductive portion, and a second end of the first transmission line is electrically connected to a second end of the second conductive pillar;
- and
- a third conductive element, wherein the second conductive element and the third conductive element form a capacitor of the electromagnetic bandgap structure, and the second conductive element and the planar inductive element are disposed between the first conductive element and the third conductive element.
2 more elements
An electronic device comprising:
- a metal housing;
- and
- an electromagnetic bandgap structure disposed at the metal housing or forming a part of the metal housing, wherein the electromagnetic bandgap structure includes:
- a first conductive element;
- a second conductive element comprising a loop-shaped conductive portion and a first transmission line, the loop-shaped conductive portion comprising a closed opening, the first transmission line being spiral in shape and disposed in the closed opening;
- a planar inductive element disposed between the first conductive element and the second conductive element, and comprising a second transmission line, wherein the planar inductive element is electrically connected to the first conductive element via a first conductive pillar, the planar inductive element is electrically connected to the second conductive element via a second conductive pillar, a first end of the second transmission line is electrically connected to a first end of the second conductive pillar, a second end of the second transmission line is electrically connected to a first end of the first conductive pillar, a second end of the first conductive pillar is electrically connected to the first conductive element, a first end of the first transmission line is electrically connected to the loop-shaped conductive portion, and a second end of the first transmission line is electrically connected to a second end of the second conductive pillar;
- and
- a third conductive element, wherein the second conductive element and the third conductive element form a capacitor of the electromagnetic bandgap structure, and the second conductive element and the planar inductive element are disposed between the first conductive element and the third conductive element.
5 more elements
Dependencies are inferred from the claim text.