摘要:
Disclosed is a printed circuit board including an electromagnetic bandgap structure. The electromagnetic bandgap structure for blocking a noise is inserted into the printed circuit board. The electromagnetic bandgap structure can include a first conductive plate; a second conductive plate arranged on a planar surface that is different from that of the first conductive plate; a third conductive plate arranged on a planar surface that is different from that of the second conductive plate; and a stitching via unit configured to connect the first conductive plate and the third conductive plate by bypassing the planar surface on which the second conductive plate is arranged and including a first inductor element.
摘要:
An EMI noise reduction board is disclosed. The electromagnetic interference (EMI) noise reduction board having an electromagnetic bandgap structure for shielding a noise includes: a first area having a ground layer and a power layer; a second area placed in a side portion of the first area having an electromagnetic bandgap structure therein. The electromagnetic bandgap structure includes: a plurality of first conductive plates and a plurality of second conductive plates placed on a same planar surface along the side portion of the first area; and a stitching via configured to electrically connect the first conductive plate to the second conductive plate through a planar surface that is different from the first conductive plate and the second conductive plate.
摘要:
An electromagnetic bandgap structure and a printed circuit board that solve a mixed signal problem are disclosed. In accordance with embodiments of the present invention, the electromagnetic bandgap structure includes a first metal layer; a first dielectric layer, stacked in the first metal layer; a second metal layer, stacked in the first dielectric layer, and having a holed formed at a position of the second dielectric layer; a second dielectric layer, stacked in the second metal layer; a metal plate, stacked in the second dielectric layer; a first via, penetrating the hole formed in the second metal layer and connecting the first metal layer and the metal plate; a third dielectric layer, stacked in the metal plate and the second dielectric layer; a third metal layer, stacked in the third dielectric layer; and a second via, connecting the second metal layer to the third metal layer.
摘要:
An electromagnetic bandgap structure, including: a first metal layer; a first dielectric layer, stacked in the first metal layer; a metal plate, stacked in the first dielectric layer; a via, having one end part which is connected to the first metal layer; a second dielectric layer, stacked in the metal plate and the first dielectric layer; and a second metal layer, stacked in the second dielectric layer, whereas the other end part of the via is connected to a via land which is placed in a hole formed in the metal plate, and the via land is connected to the metal plate through a metal line.
摘要:
Disclosed are an electromagnetic bandgap structure and a printed circuit board that can solve a mixed signal problem between an analog circuit and a digital circuit. The electromagnetic bandgap structure in which a first metal layer, a first dielectric layer, a second dielectric layer and a second metal layer are stacked can include a first metal plate, formed between the first dielectric layer and the second dielectric layer; a second metal plate, formed on a same planar surface as the first metal plate, accommodated into a hole which is formed in the first metal plate and electrically connected to the first metal plate through a metal line; and a via, connecting the second metal plate to any one of the first metal layer and the second metal layer. With the present invention, the electromagnetic bandgap structure can be not only miniaturized but also have a low bandgap frequency.
摘要:
An electromagnetic bandgap structure and a printed circuit board that can solve a mixed signal problem between an analog circuit and a digital circuit are disclosed. In accordance with an embodiment of the present invention, the electromagnetic bandgap structure can include a metal layer; and a plurality of mushroom type structures including a metal plate and a via. Here, the plurality of mushroom type structures can be formed on the metal layer in a stacked structure. With the present invention, the small sized electromagnetic bandgap structure can have a lower bandgap frequency.
摘要:
In accordance with an embodiment of the present invention, an electromagnetic bandgap structure includes a plurality of conductive plates, and a multi-via connection part, which electrically connects any two of the plurality of conductive plates with each other. Here, the multi-via connection part includes: a first multi-via, including a first via, having one end part connected to one of the two conductive plates, and at least one other via connected in serial to the first via through a conductive trace; a second multi-via, including a second via, having one end part connected to the other of the two conductive plates, and at least one other via connected in serial to the second via through a conductive trace; and a conductive connection pattern, connecting any one of the vias included in the first multi-via and any one of the vias included in the second multi-via with each other.
摘要:
An electromagnetic bandgap structure and a printed circuit board that can solve a mixed signal problem between an analog circuit and a digital circuit are disclosed. In accordance with an embodiment of the present invention, the electromagnetic bandgap structure can include a metal layer; and a plurality of mushroom type structures including a metal plate and a via. Here, the plurality of mushroom type structures can be formed on the metal layer in a stacked structure. With the present invention, the small sized electromagnetic bandgap structure can have a lower bandgap frequency.
摘要:
An EMI noise reduction package board, having a top layer and a bottom layer, one of which having a semiconductor device mounted thereon, can include: a first area having a signal layer arranged on one surface thereof; and a second area placed on a lateral side of the first area and having unit structures arranged repeatedly therein, the unit structures configured for inhibiting EMI noise from being radiated to an outside through the lateral side of the first area. The unit structure can include: a top conductive plate and a bottom conductive plate, formed, respectively, on the top layer and the bottom layer of the second area to face each other in a pair; and a via, connecting the top conductive plate with the bottom conductive plate.
摘要:
As a multi-layered board, an EMI noise reduction board, having an electromagnetic bandgap structure with band stop frequency properties inserted into an inner portion of the board, includes a first area, in which a ground layer and a power layer are formed, and a second area, placed on a side surface of the first area, in which it has the electromagnetic bandgap structure formed therein so as to shield an EMI noise radiated to the outside through the side surface of the first area. The electromagnetic bandgap structure includes a plurality of first conductive plates, placed along the edge of the board, a plurality of second conductive plates, disposed on a planar surface that is different from the first conductive plates such that the second conductive plates are alternately disposed with the first conductive plates, and a via, which connects the first conductive plates to the second conductive plates.